/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.extinction.2.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 18:06:05,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 18:06:05,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 18:06:05,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 18:06:05,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 18:06:05,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 18:06:05,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 18:06:05,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 18:06:05,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 18:06:05,897 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 18:06:05,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 18:06:05,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 18:06:05,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 18:06:05,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 18:06:05,900 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 18:06:05,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 18:06:05,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 18:06:05,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 18:06:05,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 18:06:05,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 18:06:05,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 18:06:05,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 18:06:05,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 18:06:05,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 18:06:05,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 18:06:05,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 18:06:05,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 18:06:05,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 18:06:05,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 18:06:05,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 18:06:05,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 18:06:05,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 18:06:05,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 18:06:05,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 18:06:05,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 18:06:05,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 18:06:05,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 18:06:05,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 18:06:05,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 18:06:05,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 18:06:05,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 18:06:06,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 18:06:06,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 18:06:06,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 18:06:06,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 18:06:06,138 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 18:06:06,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.extinction.2.prop1-back-serstep.c [2023-12-25 18:06:07,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 18:06:08,065 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 18:06:08,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.extinction.2.prop1-back-serstep.c [2023-12-25 18:06:08,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6624d844a/16d4ff3c7479436e83177a12706a944e/FLAGb0946aff7 [2023-12-25 18:06:08,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6624d844a/16d4ff3c7479436e83177a12706a944e [2023-12-25 18:06:08,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 18:06:08,136 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 18:06:08,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 18:06:08,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 18:06:08,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 18:06:08,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:06:08" (1/1) ... [2023-12-25 18:06:08,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebc6d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:08, skipping insertion in model container [2023-12-25 18:06:08,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:06:08" (1/1) ... [2023-12-25 18:06:08,288 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 18:06:08,553 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.extinction.2.prop1-back-serstep.c[1178,1191] [2023-12-25 18:06:09,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 18:06:09,419 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 18:06:09,429 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.extinction.2.prop1-back-serstep.c[1178,1191] [2023-12-25 18:06:09,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 18:06:09,912 INFO L206 MainTranslator]: Completed translation [2023-12-25 18:06:09,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09 WrapperNode [2023-12-25 18:06:09,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 18:06:09,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 18:06:09,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 18:06:09,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 18:06:09,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:10,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:12,417 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31519 [2023-12-25 18:06:12,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 18:06:12,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 18:06:12,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 18:06:12,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 18:06:12,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:12,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:13,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:13,752 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]. [2023-12-25 18:06:13,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:13,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:14,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:14,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:14,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:14,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:15,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 18:06:15,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 18:06:15,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 18:06:15,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 18:06:15,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (1/1) ... [2023-12-25 18:06:15,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 18:06:15,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:06:15,855 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) [2023-12-25 18:06:15,895 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 [2023-12-25 18:06:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 18:06:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 18:06:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 18:06:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 18:06:16,990 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 18:06:16,992 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 18:06:29,656 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 18:06:30,038 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 18:06:30,038 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 18:06:30,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:06:30 BoogieIcfgContainer [2023-12-25 18:06:30,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 18:06:30,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 18:06:30,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 18:06:30,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 18:06:30,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:06:08" (1/3) ... [2023-12-25 18:06:30,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260e88be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:06:30, skipping insertion in model container [2023-12-25 18:06:30,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:09" (2/3) ... [2023-12-25 18:06:30,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260e88be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:06:30, skipping insertion in model container [2023-12-25 18:06:30,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:06:30" (3/3) ... [2023-12-25 18:06:30,045 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.extinction.2.prop1-back-serstep.c [2023-12-25 18:06:30,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 18:06:30,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 18:06:30,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 18:06:30,155 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;@5f139a7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 18:06:30,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 18:06:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 6778 states, 6776 states have (on average 1.6682408500590318) internal successors, (11304), 6777 states have internal predecessors, (11304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-12-25 18:06:30,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:30,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:30,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:30,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:30,237 INFO L85 PathProgramCache]: Analyzing trace with hash -511751859, now seen corresponding path program 1 times [2023-12-25 18:06:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:30,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673464780] [2023-12-25 18:06:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673464780] [2023-12-25 18:06:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673464780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:33,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807272469] [2023-12-25 18:06:33,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:33,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:33,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:33,235 INFO L87 Difference]: Start difference. First operand has 6778 states, 6776 states have (on average 1.6682408500590318) internal successors, (11304), 6777 states have internal predecessors, (11304), 0 states have call successors, (0), 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 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:33,534 INFO L93 Difference]: Finished difference Result 13258 states and 22114 transitions. [2023-12-25 18:06:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 18:06:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 756 [2023-12-25 18:06:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:33,657 INFO L225 Difference]: With dead ends: 13258 [2023-12-25 18:06:33,658 INFO L226 Difference]: Without dead ends: 6778 [2023-12-25 18:06:33,689 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 [2023-12-25 18:06:33,700 INFO L413 NwaCegarLoop]: 11297 mSDtfsCounter, 1 mSDsluCounter, 22589 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33886 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:33,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33886 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:06:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2023-12-25 18:06:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 6778. [2023-12-25 18:06:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6778 states, 6777 states have (on average 1.6676995720820422) internal successors, (11302), 6777 states have internal predecessors, (11302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6778 states to 6778 states and 11302 transitions. [2023-12-25 18:06:33,993 INFO L78 Accepts]: Start accepts. Automaton has 6778 states and 11302 transitions. Word has length 756 [2023-12-25 18:06:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:33,995 INFO L495 AbstractCegarLoop]: Abstraction has 6778 states and 11302 transitions. [2023-12-25 18:06:33,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6778 states and 11302 transitions. [2023-12-25 18:06:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2023-12-25 18:06:34,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:34,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:34,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 18:06:34,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:34,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:34,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1317291015, now seen corresponding path program 1 times [2023-12-25 18:06:34,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:34,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110878687] [2023-12-25 18:06:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:34,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:35,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110878687] [2023-12-25 18:06:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110878687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:35,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:35,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15255979] [2023-12-25 18:06:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:35,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:35,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:35,287 INFO L87 Difference]: Start difference. First operand 6778 states and 11302 transitions. Second operand has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:35,510 INFO L93 Difference]: Finished difference Result 13261 states and 22112 transitions. [2023-12-25 18:06:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 18:06:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 757 [2023-12-25 18:06:35,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:35,532 INFO L225 Difference]: With dead ends: 13261 [2023-12-25 18:06:35,532 INFO L226 Difference]: Without dead ends: 6781 [2023-12-25 18:06:35,542 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 [2023-12-25 18:06:35,543 INFO L413 NwaCegarLoop]: 11297 mSDtfsCounter, 1 mSDsluCounter, 22587 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33884 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:35,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33884 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:06:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2023-12-25 18:06:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6780. [2023-12-25 18:06:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6780 states, 6779 states have (on average 1.6675025815016964) internal successors, (11304), 6779 states have internal predecessors, (11304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6780 states to 6780 states and 11304 transitions. [2023-12-25 18:06:35,812 INFO L78 Accepts]: Start accepts. Automaton has 6780 states and 11304 transitions. Word has length 757 [2023-12-25 18:06:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:35,813 INFO L495 AbstractCegarLoop]: Abstraction has 6780 states and 11304 transitions. [2023-12-25 18:06:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6780 states and 11304 transitions. [2023-12-25 18:06:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-12-25 18:06:35,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:35,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 18:06:35,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:35,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1970887847, now seen corresponding path program 1 times [2023-12-25 18:06:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:35,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97406096] [2023-12-25 18:06:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:35,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97406096] [2023-12-25 18:06:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97406096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792773416] [2023-12-25 18:06:37,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:37,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:37,190 INFO L87 Difference]: Start difference. First operand 6780 states and 11304 transitions. Second operand has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:37,552 INFO L93 Difference]: Finished difference Result 19738 states and 32911 transitions. [2023-12-25 18:06:37,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 18:06:37,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 758 [2023-12-25 18:06:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:37,607 INFO L225 Difference]: With dead ends: 19738 [2023-12-25 18:06:37,607 INFO L226 Difference]: Without dead ends: 13256 [2023-12-25 18:06:37,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 18:06:37,624 INFO L413 NwaCegarLoop]: 12672 mSDtfsCounter, 10795 mSDsluCounter, 23960 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10795 SdHoareTripleChecker+Valid, 36632 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:37,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10795 Valid, 36632 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:06:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13256 states. [2023-12-25 18:06:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13256 to 6782. [2023-12-25 18:06:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6782 states, 6781 states have (on average 1.6673057071228432) internal successors, (11306), 6781 states have internal predecessors, (11306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6782 states to 6782 states and 11306 transitions. [2023-12-25 18:06:37,836 INFO L78 Accepts]: Start accepts. Automaton has 6782 states and 11306 transitions. Word has length 758 [2023-12-25 18:06:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:37,837 INFO L495 AbstractCegarLoop]: Abstraction has 6782 states and 11306 transitions. [2023-12-25 18:06:37,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6782 states and 11306 transitions. [2023-12-25 18:06:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-12-25 18:06:37,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:37,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:37,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 18:06:37,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:37,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2120101909, now seen corresponding path program 1 times [2023-12-25 18:06:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036316779] [2023-12-25 18:06:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:39,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036316779] [2023-12-25 18:06:39,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036316779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145946625] [2023-12-25 18:06:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:39,216 INFO L87 Difference]: Start difference. First operand 6782 states and 11306 transitions. Second operand has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:39,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:39,568 INFO L93 Difference]: Finished difference Result 19741 states and 32912 transitions. [2023-12-25 18:06:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 18:06:39,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 759 [2023-12-25 18:06:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:39,596 INFO L225 Difference]: With dead ends: 19741 [2023-12-25 18:06:39,596 INFO L226 Difference]: Without dead ends: 13257 [2023-12-25 18:06:39,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 18:06:39,609 INFO L413 NwaCegarLoop]: 12667 mSDtfsCounter, 10792 mSDsluCounter, 23955 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10792 SdHoareTripleChecker+Valid, 36622 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:39,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10792 Valid, 36622 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:06:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13257 states. [2023-12-25 18:06:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13257 to 6784. [2023-12-25 18:06:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6784 states, 6783 states have (on average 1.667108948842695) internal successors, (11308), 6783 states have internal predecessors, (11308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6784 states to 6784 states and 11308 transitions. [2023-12-25 18:06:39,784 INFO L78 Accepts]: Start accepts. Automaton has 6784 states and 11308 transitions. Word has length 759 [2023-12-25 18:06:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:39,785 INFO L495 AbstractCegarLoop]: Abstraction has 6784 states and 11308 transitions. [2023-12-25 18:06:39,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6784 states and 11308 transitions. [2023-12-25 18:06:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-12-25 18:06:39,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:39,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:39,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 18:06:39,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:39,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash -880926657, now seen corresponding path program 1 times [2023-12-25 18:06:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:39,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821304187] [2023-12-25 18:06:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:39,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821304187] [2023-12-25 18:06:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821304187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219584328] [2023-12-25 18:06:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:40,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:40,951 INFO L87 Difference]: Start difference. First operand 6784 states and 11308 transitions. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:41,219 INFO L93 Difference]: Finished difference Result 19744 states and 32913 transitions. [2023-12-25 18:06:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 18:06:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 760 [2023-12-25 18:06:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:41,244 INFO L225 Difference]: With dead ends: 19744 [2023-12-25 18:06:41,245 INFO L226 Difference]: Without dead ends: 13258 [2023-12-25 18:06:41,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 18:06:41,257 INFO L413 NwaCegarLoop]: 12662 mSDtfsCounter, 10789 mSDsluCounter, 23950 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10789 SdHoareTripleChecker+Valid, 36612 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:41,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10789 Valid, 36612 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 18:06:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13258 states. [2023-12-25 18:06:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13258 to 6786. [2023-12-25 18:06:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6786 states, 6785 states have (on average 1.6669123065585851) internal successors, (11310), 6785 states have internal predecessors, (11310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6786 states to 6786 states and 11310 transitions. [2023-12-25 18:06:41,453 INFO L78 Accepts]: Start accepts. Automaton has 6786 states and 11310 transitions. Word has length 760 [2023-12-25 18:06:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:41,454 INFO L495 AbstractCegarLoop]: Abstraction has 6786 states and 11310 transitions. [2023-12-25 18:06:41,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6786 states and 11310 transitions. [2023-12-25 18:06:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-12-25 18:06:41,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:41,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 18:06:41,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:41,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1382409327, now seen corresponding path program 1 times [2023-12-25 18:06:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:41,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141986052] [2023-12-25 18:06:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:41,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141986052] [2023-12-25 18:06:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141986052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:42,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:42,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:42,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521972418] [2023-12-25 18:06:42,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:42,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:42,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:42,845 INFO L87 Difference]: Start difference. First operand 6786 states and 11310 transitions. Second operand has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:43,080 INFO L93 Difference]: Finished difference Result 19747 states and 32914 transitions. [2023-12-25 18:06:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 18:06:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 761 [2023-12-25 18:06:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:43,111 INFO L225 Difference]: With dead ends: 19747 [2023-12-25 18:06:43,112 INFO L226 Difference]: Without dead ends: 13259 [2023-12-25 18:06:43,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 18:06:43,126 INFO L413 NwaCegarLoop]: 12657 mSDtfsCounter, 10786 mSDsluCounter, 23945 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10786 SdHoareTripleChecker+Valid, 36602 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:43,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10786 Valid, 36602 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 18:06:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2023-12-25 18:06:43,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 6788. [2023-12-25 18:06:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6788 states, 6787 states have (on average 1.6667157801679682) internal successors, (11312), 6787 states have internal predecessors, (11312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 11312 transitions. [2023-12-25 18:06:43,278 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 11312 transitions. Word has length 761 [2023-12-25 18:06:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:43,280 INFO L495 AbstractCegarLoop]: Abstraction has 6788 states and 11312 transitions. [2023-12-25 18:06:43,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 11312 transitions. [2023-12-25 18:06:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-12-25 18:06:43,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:43,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:43,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 18:06:43,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:43,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:43,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1030549401, now seen corresponding path program 1 times [2023-12-25 18:06:43,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:43,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226277468] [2023-12-25 18:06:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:43,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:44,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:44,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226277468] [2023-12-25 18:06:44,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226277468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:44,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 18:06:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022162188] [2023-12-25 18:06:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:44,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:06:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:06:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 18:06:44,443 INFO L87 Difference]: Start difference. First operand 6788 states and 11312 transitions. Second operand has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:44,664 INFO L93 Difference]: Finished difference Result 19750 states and 32915 transitions. [2023-12-25 18:06:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 18:06:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 762 [2023-12-25 18:06:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:44,697 INFO L225 Difference]: With dead ends: 19750 [2023-12-25 18:06:44,697 INFO L226 Difference]: Without dead ends: 13260 [2023-12-25 18:06:44,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 18:06:44,708 INFO L413 NwaCegarLoop]: 12652 mSDtfsCounter, 10783 mSDsluCounter, 34722 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10783 SdHoareTripleChecker+Valid, 47374 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:44,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10783 Valid, 47374 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 18:06:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13260 states. [2023-12-25 18:06:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13260 to 6790. [2023-12-25 18:06:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6790 states, 6789 states have (on average 1.6665193695684195) internal successors, (11314), 6789 states have internal predecessors, (11314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6790 states to 6790 states and 11314 transitions. [2023-12-25 18:06:44,821 INFO L78 Accepts]: Start accepts. Automaton has 6790 states and 11314 transitions. Word has length 762 [2023-12-25 18:06:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:44,822 INFO L495 AbstractCegarLoop]: Abstraction has 6790 states and 11314 transitions. [2023-12-25 18:06:44,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6790 states and 11314 transitions. [2023-12-25 18:06:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-25 18:06:44,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:44,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 18:06:44,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:44,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1780899445, now seen corresponding path program 1 times [2023-12-25 18:06:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:44,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011271627] [2023-12-25 18:06:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011271627] [2023-12-25 18:06:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011271627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:45,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:45,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087574140] [2023-12-25 18:06:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:45,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:45,674 INFO L87 Difference]: Start difference. First operand 6790 states and 11314 transitions. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:45,878 INFO L93 Difference]: Finished difference Result 19753 states and 32916 transitions. [2023-12-25 18:06:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 18:06:45,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 763 [2023-12-25 18:06:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:45,907 INFO L225 Difference]: With dead ends: 19753 [2023-12-25 18:06:45,907 INFO L226 Difference]: Without dead ends: 13261 [2023-12-25 18:06:45,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 18:06:45,918 INFO L413 NwaCegarLoop]: 12647 mSDtfsCounter, 10780 mSDsluCounter, 23935 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10780 SdHoareTripleChecker+Valid, 36582 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:45,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10780 Valid, 36582 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 18:06:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2023-12-25 18:06:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 6792. [2023-12-25 18:06:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 6791 states have (on average 1.6663230746576352) internal successors, (11316), 6791 states have internal predecessors, (11316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 11316 transitions. [2023-12-25 18:06:46,039 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 11316 transitions. Word has length 763 [2023-12-25 18:06:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:46,040 INFO L495 AbstractCegarLoop]: Abstraction has 6792 states and 11316 transitions. [2023-12-25 18:06:46,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 11316 transitions. [2023-12-25 18:06:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-25 18:06:46,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:46,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:46,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 18:06:46,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:46,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash -735493583, now seen corresponding path program 1 times [2023-12-25 18:06:46,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:46,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813561302] [2023-12-25 18:06:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:47,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:47,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813561302] [2023-12-25 18:06:47,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813561302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:47,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 18:06:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801704897] [2023-12-25 18:06:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:47,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 18:06:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:47,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 18:06:47,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 18:06:47,179 INFO L87 Difference]: Start difference. First operand 6792 states and 11316 transitions. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:47,575 INFO L93 Difference]: Finished difference Result 20609 states and 34332 transitions. [2023-12-25 18:06:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:06:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 764 [2023-12-25 18:06:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:47,602 INFO L225 Difference]: With dead ends: 20609 [2023-12-25 18:06:47,602 INFO L226 Difference]: Without dead ends: 14115 [2023-12-25 18:06:47,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-25 18:06:47,613 INFO L413 NwaCegarLoop]: 12671 mSDtfsCounter, 44308 mSDsluCounter, 33381 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44308 SdHoareTripleChecker+Valid, 46052 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:47,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44308 Valid, 46052 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:06:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14115 states. [2023-12-25 18:06:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14115 to 7617. [2023-12-25 18:06:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7617 states, 7616 states have (on average 1.666360294117647) internal successors, (12691), 7616 states have internal predecessors, (12691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7617 states to 7617 states and 12691 transitions. [2023-12-25 18:06:47,753 INFO L78 Accepts]: Start accepts. Automaton has 7617 states and 12691 transitions. Word has length 764 [2023-12-25 18:06:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:47,754 INFO L495 AbstractCegarLoop]: Abstraction has 7617 states and 12691 transitions. [2023-12-25 18:06:47,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7617 states and 12691 transitions. [2023-12-25 18:06:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5030 [2023-12-25 18:06:47,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:47,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:47,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 18:06:47,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:47,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:47,894 INFO L85 PathProgramCache]: Analyzing trace with hash -429406450, now seen corresponding path program 1 times [2023-12-25 18:06:47,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:47,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210509927] [2023-12-25 18:06:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:48,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:06:48,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974542117] [2023-12-25 18:06:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:48,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:06:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:06:48,363 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) [2023-12-25 18:06:48,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 18:06:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:06:54,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 25856 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 18:06:54,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:06:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 556 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:06:55,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 18:06:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:06:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210509927] [2023-12-25 18:06:55,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:06:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974542117] [2023-12-25 18:06:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974542117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:06:55,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:06:55,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:06:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703700572] [2023-12-25 18:06:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:06:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:06:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:06:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:06:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:55,103 INFO L87 Difference]: Start difference. First operand 7617 states and 12691 transitions. Second operand has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:06:55,284 INFO L93 Difference]: Finished difference Result 14121 states and 23527 transitions. [2023-12-25 18:06:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 18:06:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5029 [2023-12-25 18:06:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:06:55,300 INFO L225 Difference]: With dead ends: 14121 [2023-12-25 18:06:55,301 INFO L226 Difference]: Without dead ends: 7627 [2023-12-25 18:06:55,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5028 GetRequests, 5026 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:06:55,310 INFO L413 NwaCegarLoop]: 11297 mSDtfsCounter, 12 mSDsluCounter, 22584 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33881 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:06:55,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33881 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:06:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7627 states. [2023-12-25 18:06:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7627 to 7619. [2023-12-25 18:06:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7619 states, 7618 states have (on average 1.6661853504856918) internal successors, (12693), 7618 states have internal predecessors, (12693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7619 states to 7619 states and 12693 transitions. [2023-12-25 18:06:55,427 INFO L78 Accepts]: Start accepts. Automaton has 7619 states and 12693 transitions. Word has length 5029 [2023-12-25 18:06:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:06:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 7619 states and 12693 transitions. [2023-12-25 18:06:55,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:06:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 7619 states and 12693 transitions. [2023-12-25 18:06:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5030 [2023-12-25 18:06:55,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:06:55,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:06:55,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 18:06:55,804 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,SelfDestructingSolverStorable9 [2023-12-25 18:06:55,804 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:06:55,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:06:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 434498780, now seen corresponding path program 1 times [2023-12-25 18:06:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:06:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141708954] [2023-12-25 18:06:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:06:56,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:06:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305871040] [2023-12-25 18:06:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:06:56,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:06:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:06:56,271 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) [2023-12-25 18:06:56,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 18:07:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:07:02,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 25857 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 18:07:02,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:07:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 556 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:07:02,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 18:07:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:07:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141708954] [2023-12-25 18:07:02,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:07:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305871040] [2023-12-25 18:07:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305871040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:07:02,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:07:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:07:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356786877] [2023-12-25 18:07:02,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:07:02,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:07:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:07:02,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:07:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:07:02,780 INFO L87 Difference]: Start difference. First operand 7619 states and 12693 transitions. Second operand has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:07:02,951 INFO L93 Difference]: Finished difference Result 14124 states and 23529 transitions. [2023-12-25 18:07:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 18:07:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5029 [2023-12-25 18:07:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:07:02,966 INFO L225 Difference]: With dead ends: 14124 [2023-12-25 18:07:02,966 INFO L226 Difference]: Without dead ends: 7628 [2023-12-25 18:07:02,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5028 GetRequests, 5026 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:07:02,975 INFO L413 NwaCegarLoop]: 11297 mSDtfsCounter, 12 mSDsluCounter, 22584 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33881 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:07:02,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33881 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 18:07:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7628 states. [2023-12-25 18:07:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7628 to 7620. [2023-12-25 18:07:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7620 states, 7619 states have (on average 1.6660979131119569) internal successors, (12694), 7619 states have internal predecessors, (12694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 12694 transitions. [2023-12-25 18:07:03,087 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 12694 transitions. Word has length 5029 [2023-12-25 18:07:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:07:03,089 INFO L495 AbstractCegarLoop]: Abstraction has 7620 states and 12694 transitions. [2023-12-25 18:07:03,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 12694 transitions. [2023-12-25 18:07:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5030 [2023-12-25 18:07:03,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:07:03,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:07:03,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 18:07:03,444 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,SelfDestructingSolverStorable10 [2023-12-25 18:07:03,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:07:03,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:07:03,446 INFO L85 PathProgramCache]: Analyzing trace with hash -721389910, now seen corresponding path program 1 times [2023-12-25 18:07:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:07:03,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408400382] [2023-12-25 18:07:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:07:04,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:07:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136715772] [2023-12-25 18:07:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:07:04,080 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) [2023-12-25 18:07:04,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 18:07:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:07:10,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 25858 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 18:07:10,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:07:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 556 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:07:10,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 18:07:10,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:07:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408400382] [2023-12-25 18:07:10,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:07:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136715772] [2023-12-25 18:07:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136715772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:07:10,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:07:10,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:07:10,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832905552] [2023-12-25 18:07:10,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:07:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:07:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:07:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:07:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:07:10,814 INFO L87 Difference]: Start difference. First operand 7620 states and 12694 transitions. Second operand has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:07:11,077 INFO L93 Difference]: Finished difference Result 14126 states and 23531 transitions. [2023-12-25 18:07:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 18:07:11,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5029 [2023-12-25 18:07:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:07:11,088 INFO L225 Difference]: With dead ends: 14126 [2023-12-25 18:07:11,088 INFO L226 Difference]: Without dead ends: 7629 [2023-12-25 18:07:11,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5028 GetRequests, 5026 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:07:11,095 INFO L413 NwaCegarLoop]: 11297 mSDtfsCounter, 12 mSDsluCounter, 22584 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33881 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 18:07:11,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33881 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 18:07:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2023-12-25 18:07:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 7621. [2023-12-25 18:07:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7621 states, 7620 states have (on average 1.666010498687664) internal successors, (12695), 7620 states have internal predecessors, (12695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7621 states to 7621 states and 12695 transitions. [2023-12-25 18:07:11,193 INFO L78 Accepts]: Start accepts. Automaton has 7621 states and 12695 transitions. Word has length 5029 [2023-12-25 18:07:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:07:11,194 INFO L495 AbstractCegarLoop]: Abstraction has 7621 states and 12695 transitions. [2023-12-25 18:07:11,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 7621 states and 12695 transitions. [2023-12-25 18:07:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5030 [2023-12-25 18:07:11,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:07:11,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:07:11,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 18:07:11,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:11,545 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:07:11,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:07:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1234984328, now seen corresponding path program 1 times [2023-12-25 18:07:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:07:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519863293] [2023-12-25 18:07:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:07:12,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:07:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601591726] [2023-12-25 18:07:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:12,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:07:12,127 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) [2023-12-25 18:07:12,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 18:07:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:07:18,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 25859 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 18:07:18,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:07:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 556 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 18:07:18,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 18:07:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:07:18,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519863293] [2023-12-25 18:07:18,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:07:18,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601591726] [2023-12-25 18:07:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601591726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 18:07:18,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 18:07:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 18:07:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084872817] [2023-12-25 18:07:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:07:18,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 18:07:18,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:07:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 18:07:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:07:18,667 INFO L87 Difference]: Start difference. First operand 7621 states and 12695 transitions. Second operand has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:07:18,805 INFO L93 Difference]: Finished difference Result 14128 states and 23533 transitions. [2023-12-25 18:07:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 18:07:18,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5029 [2023-12-25 18:07:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:07:18,818 INFO L225 Difference]: With dead ends: 14128 [2023-12-25 18:07:18,818 INFO L226 Difference]: Without dead ends: 7630 [2023-12-25 18:07:18,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5028 GetRequests, 5026 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 18:07:18,827 INFO L413 NwaCegarLoop]: 11297 mSDtfsCounter, 12 mSDsluCounter, 22584 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33881 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:07:18,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33881 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 18:07:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2023-12-25 18:07:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7622. [2023-12-25 18:07:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7622 states, 7621 states have (on average 1.665923107203779) internal successors, (12696), 7621 states have internal predecessors, (12696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7622 states to 7622 states and 12696 transitions. [2023-12-25 18:07:18,926 INFO L78 Accepts]: Start accepts. Automaton has 7622 states and 12696 transitions. Word has length 5029 [2023-12-25 18:07:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:07:18,928 INFO L495 AbstractCegarLoop]: Abstraction has 7622 states and 12696 transitions. [2023-12-25 18:07:18,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1257.25) internal successors, (5029), 4 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7622 states and 12696 transitions. [2023-12-25 18:07:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5030 [2023-12-25 18:07:19,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:07:19,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:07:19,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 18:07:19,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:19,401 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:07:19,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:07:19,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1335983546, now seen corresponding path program 1 times [2023-12-25 18:07:19,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:07:19,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931835911] [2023-12-25 18:07:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:19,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:07:19,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:07:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200382475] [2023-12-25 18:07:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:19,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:07:19,812 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) [2023-12-25 18:07:19,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 18:07:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:07:26,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 25860 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:07:26,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:07:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 18 proven. 441 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-25 18:07:27,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:07:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2023-12-25 18:07:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:07:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931835911] [2023-12-25 18:07:27,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:07:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200382475] [2023-12-25 18:07:27,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200382475] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:07:27,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:07:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:07:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943330579] [2023-12-25 18:07:27,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:07:27,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:07:27,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:07:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:07:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:07:27,620 INFO L87 Difference]: Start difference. First operand 7622 states and 12696 transitions. Second operand has 5 states, 5 states have (on average 898.4) internal successors, (4492), 5 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:07:35,044 INFO L93 Difference]: Finished difference Result 26494 states and 43928 transitions. [2023-12-25 18:07:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:07:35,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 898.4) internal successors, (4492), 5 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5029 [2023-12-25 18:07:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:07:35,064 INFO L225 Difference]: With dead ends: 26494 [2023-12-25 18:07:35,064 INFO L226 Difference]: Without dead ends: 14099 [2023-12-25 18:07:35,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10057 GetRequests, 10048 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:07:35,074 INFO L413 NwaCegarLoop]: 18506 mSDtfsCounter, 28655 mSDsluCounter, 18163 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28655 SdHoareTripleChecker+Valid, 36669 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:07:35,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28655 Valid, 36669 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 18:07:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14099 states. [2023-12-25 18:07:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14099 to 7624. [2023-12-25 18:07:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7624 states, 7623 states have (on average 1.6657483930211203) internal successors, (12698), 7623 states have internal predecessors, (12698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7624 states to 7624 states and 12698 transitions. [2023-12-25 18:07:35,181 INFO L78 Accepts]: Start accepts. Automaton has 7624 states and 12698 transitions. Word has length 5029 [2023-12-25 18:07:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:07:35,184 INFO L495 AbstractCegarLoop]: Abstraction has 7624 states and 12698 transitions. [2023-12-25 18:07:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 898.4) internal successors, (4492), 5 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 7624 states and 12698 transitions. [2023-12-25 18:07:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5031 [2023-12-25 18:07:35,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:07:35,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:07:35,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 18:07:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-25 18:07:35,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:07:35,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:07:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1132638042, now seen corresponding path program 1 times [2023-12-25 18:07:35,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:07:35,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605760858] [2023-12-25 18:07:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:35,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:07:36,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:07:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333946242] [2023-12-25 18:07:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:36,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:07:36,094 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) [2023-12-25 18:07:36,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 18:07:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:07:42,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 25863 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:07:42,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:07:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 20 proven. 441 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-25 18:07:43,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:07:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-12-25 18:07:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:07:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605760858] [2023-12-25 18:07:43,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:07:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333946242] [2023-12-25 18:07:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333946242] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:07:43,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:07:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:07:43,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143385069] [2023-12-25 18:07:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:07:43,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:07:43,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:07:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:07:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:07:43,668 INFO L87 Difference]: Start difference. First operand 7624 states and 12698 transitions. Second operand has 5 states, 5 states have (on average 899.0) internal successors, (4495), 5 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:07:50,826 INFO L93 Difference]: Finished difference Result 26502 states and 43936 transitions. [2023-12-25 18:07:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:07:50,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 899.0) internal successors, (4495), 5 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5030 [2023-12-25 18:07:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:07:50,843 INFO L225 Difference]: With dead ends: 26502 [2023-12-25 18:07:50,843 INFO L226 Difference]: Without dead ends: 14100 [2023-12-25 18:07:50,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10059 GetRequests, 10050 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:07:50,852 INFO L413 NwaCegarLoop]: 18498 mSDtfsCounter, 28647 mSDsluCounter, 18158 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28647 SdHoareTripleChecker+Valid, 36656 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:07:50,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28647 Valid, 36656 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:07:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14100 states. [2023-12-25 18:07:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14100 to 7626. [2023-12-25 18:07:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7626 states, 7625 states have (on average 1.6655737704918032) internal successors, (12700), 7625 states have internal predecessors, (12700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7626 states to 7626 states and 12700 transitions. [2023-12-25 18:07:51,016 INFO L78 Accepts]: Start accepts. Automaton has 7626 states and 12700 transitions. Word has length 5030 [2023-12-25 18:07:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:07:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 7626 states and 12700 transitions. [2023-12-25 18:07:51,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 899.0) internal successors, (4495), 5 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:07:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7626 states and 12700 transitions. [2023-12-25 18:07:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5032 [2023-12-25 18:07:51,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:07:51,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:07:51,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-25 18:07:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-25 18:07:51,376 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:07:51,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:07:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 520543328, now seen corresponding path program 1 times [2023-12-25 18:07:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:07:51,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71207360] [2023-12-25 18:07:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:07:51,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:07:51,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896650007] [2023-12-25 18:07:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:07:51,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:07:51,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:07:51,801 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) [2023-12-25 18:07:51,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 18:07:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:07:57,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 25866 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:07:58,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:07:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 22 proven. 441 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-25 18:07:58,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:07:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-12-25 18:07:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:07:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71207360] [2023-12-25 18:07:58,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:07:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896650007] [2023-12-25 18:07:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896650007] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:07:58,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:07:58,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:07:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036901228] [2023-12-25 18:07:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:07:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:07:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:07:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:07:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:07:58,859 INFO L87 Difference]: Start difference. First operand 7626 states and 12700 transitions. Second operand has 5 states, 5 states have (on average 899.6) internal successors, (4498), 5 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:08:05,634 INFO L93 Difference]: Finished difference Result 26510 states and 43944 transitions. [2023-12-25 18:08:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:08:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 899.6) internal successors, (4498), 5 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5031 [2023-12-25 18:08:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:08:05,647 INFO L225 Difference]: With dead ends: 26510 [2023-12-25 18:08:05,648 INFO L226 Difference]: Without dead ends: 14101 [2023-12-25 18:08:05,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10061 GetRequests, 10052 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:08:05,654 INFO L413 NwaCegarLoop]: 18490 mSDtfsCounter, 28639 mSDsluCounter, 18153 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28639 SdHoareTripleChecker+Valid, 36643 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 18:08:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28639 Valid, 36643 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 18:08:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14101 states. [2023-12-25 18:08:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14101 to 7628. [2023-12-25 18:08:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7628 states, 7627 states have (on average 1.6653992395437263) internal successors, (12702), 7627 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 12702 transitions. [2023-12-25 18:08:05,752 INFO L78 Accepts]: Start accepts. Automaton has 7628 states and 12702 transitions. Word has length 5031 [2023-12-25 18:08:05,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:08:05,755 INFO L495 AbstractCegarLoop]: Abstraction has 7628 states and 12702 transitions. [2023-12-25 18:08:05,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 899.6) internal successors, (4498), 5 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7628 states and 12702 transitions. [2023-12-25 18:08:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5033 [2023-12-25 18:08:05,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:08:05,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:08:05,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-25 18:08:06,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:08:06,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:08:06,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:08:06,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1123603402, now seen corresponding path program 1 times [2023-12-25 18:08:06,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:08:06,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116448917] [2023-12-25 18:08:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:08:06,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:08:06,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768767782] [2023-12-25 18:08:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:06,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:08:06,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:08:06,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:08:06,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 18:08:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:08:12,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 25870 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:08:12,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:08:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 24 proven. 441 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-25 18:08:13,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:08:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-12-25 18:08:13,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:08:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116448917] [2023-12-25 18:08:13,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:08:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768767782] [2023-12-25 18:08:13,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768767782] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:08:13,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:08:13,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:08:13,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567789846] [2023-12-25 18:08:13,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:08:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:08:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:08:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:08:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:08:13,639 INFO L87 Difference]: Start difference. First operand 7628 states and 12702 transitions. Second operand has 5 states, 5 states have (on average 900.2) internal successors, (4501), 5 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:08:20,526 INFO L93 Difference]: Finished difference Result 26518 states and 43952 transitions. [2023-12-25 18:08:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:08:20,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 900.2) internal successors, (4501), 5 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5032 [2023-12-25 18:08:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:08:20,541 INFO L225 Difference]: With dead ends: 26518 [2023-12-25 18:08:20,541 INFO L226 Difference]: Without dead ends: 14102 [2023-12-25 18:08:20,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10063 GetRequests, 10054 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:08:20,548 INFO L413 NwaCegarLoop]: 18482 mSDtfsCounter, 28621 mSDsluCounter, 18149 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28621 SdHoareTripleChecker+Valid, 36631 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-25 18:08:20,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28621 Valid, 36631 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-25 18:08:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2023-12-25 18:08:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 7630. [2023-12-25 18:08:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7629 states have (on average 1.665224800104863) internal successors, (12704), 7629 states have internal predecessors, (12704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 12704 transitions. [2023-12-25 18:08:20,639 INFO L78 Accepts]: Start accepts. Automaton has 7630 states and 12704 transitions. Word has length 5032 [2023-12-25 18:08:20,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:08:20,642 INFO L495 AbstractCegarLoop]: Abstraction has 7630 states and 12704 transitions. [2023-12-25 18:08:20,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 900.2) internal successors, (4501), 5 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7630 states and 12704 transitions. [2023-12-25 18:08:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5034 [2023-12-25 18:08:20,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:08:20,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:08:20,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 18:08:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-25 18:08:20,985 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:08:20,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:08:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash -64856904, now seen corresponding path program 1 times [2023-12-25 18:08:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:08:20,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142466329] [2023-12-25 18:08:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:08:21,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:08:21,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570112536] [2023-12-25 18:08:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:21,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:08:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:08:21,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:08:21,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 18:08:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:08:27,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 25873 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:08:27,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:08:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 26 proven. 441 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-12-25 18:08:28,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:08:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-25 18:08:28,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:08:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142466329] [2023-12-25 18:08:28,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:08:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570112536] [2023-12-25 18:08:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570112536] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:08:28,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:08:28,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:08:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335447366] [2023-12-25 18:08:28,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:08:28,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:08:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:08:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:08:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:08:28,450 INFO L87 Difference]: Start difference. First operand 7630 states and 12704 transitions. Second operand has 5 states, 5 states have (on average 900.8) internal successors, (4504), 5 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:08:34,986 INFO L93 Difference]: Finished difference Result 26526 states and 43960 transitions. [2023-12-25 18:08:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:08:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 900.8) internal successors, (4504), 5 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5033 [2023-12-25 18:08:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:08:35,004 INFO L225 Difference]: With dead ends: 26526 [2023-12-25 18:08:35,004 INFO L226 Difference]: Without dead ends: 14103 [2023-12-25 18:08:35,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10065 GetRequests, 10056 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:08:35,016 INFO L413 NwaCegarLoop]: 18474 mSDtfsCounter, 28623 mSDsluCounter, 18143 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28623 SdHoareTripleChecker+Valid, 36617 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 18:08:35,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28623 Valid, 36617 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 18:08:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14103 states. [2023-12-25 18:08:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14103 to 7632. [2023-12-25 18:08:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 7631 states have (on average 1.665050452103263) internal successors, (12706), 7631 states have internal predecessors, (12706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 12706 transitions. [2023-12-25 18:08:35,118 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 12706 transitions. Word has length 5033 [2023-12-25 18:08:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:08:35,120 INFO L495 AbstractCegarLoop]: Abstraction has 7632 states and 12706 transitions. [2023-12-25 18:08:35,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 900.8) internal successors, (4504), 5 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:35,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 12706 transitions. [2023-12-25 18:08:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5035 [2023-12-25 18:08:35,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:08:35,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:08:35,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 18:08:35,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-25 18:08:35,470 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:08:35,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:08:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1364238512, now seen corresponding path program 1 times [2023-12-25 18:08:35,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:08:35,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941550162] [2023-12-25 18:08:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:35,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:08:35,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:08:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653545576] [2023-12-25 18:08:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:35,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:08:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:08:35,860 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:08:35,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 18:08:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:08:41,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 25876 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:08:41,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:08:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 28 proven. 441 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 18:08:42,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:08:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2023-12-25 18:08:42,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:08:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941550162] [2023-12-25 18:08:42,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:08:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653545576] [2023-12-25 18:08:42,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653545576] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:08:42,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:08:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:08:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170784378] [2023-12-25 18:08:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:08:42,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:08:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:08:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:08:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:08:42,461 INFO L87 Difference]: Start difference. First operand 7632 states and 12706 transitions. Second operand has 5 states, 5 states have (on average 901.4) internal successors, (4507), 5 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:08:49,054 INFO L93 Difference]: Finished difference Result 26534 states and 43968 transitions. [2023-12-25 18:08:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:08:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 901.4) internal successors, (4507), 5 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5034 [2023-12-25 18:08:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:08:49,071 INFO L225 Difference]: With dead ends: 26534 [2023-12-25 18:08:49,071 INFO L226 Difference]: Without dead ends: 14104 [2023-12-25 18:08:49,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10067 GetRequests, 10058 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:08:49,081 INFO L413 NwaCegarLoop]: 18466 mSDtfsCounter, 28615 mSDsluCounter, 18138 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28615 SdHoareTripleChecker+Valid, 36604 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 18:08:49,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28615 Valid, 36604 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 18:08:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14104 states. [2023-12-25 18:08:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14104 to 7634. [2023-12-25 18:08:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7634 states, 7633 states have (on average 1.664876195467051) internal successors, (12708), 7633 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 12708 transitions. [2023-12-25 18:08:49,172 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 12708 transitions. Word has length 5034 [2023-12-25 18:08:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:08:49,174 INFO L495 AbstractCegarLoop]: Abstraction has 7634 states and 12708 transitions. [2023-12-25 18:08:49,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 901.4) internal successors, (4507), 5 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:08:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 12708 transitions. [2023-12-25 18:08:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5036 [2023-12-25 18:08:49,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:08:49,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:08:49,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 18:08:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:08:49,516 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:08:49,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:08:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1365044526, now seen corresponding path program 1 times [2023-12-25 18:08:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:08:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948765979] [2023-12-25 18:08:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:08:49,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:08:49,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725301114] [2023-12-25 18:08:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:08:49,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:08:49,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:08:49,936 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:08:49,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 18:08:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:08:55,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 25879 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:08:55,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:08:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 30 proven. 441 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-25 18:08:56,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:08:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2023-12-25 18:08:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:08:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948765979] [2023-12-25 18:08:56,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:08:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725301114] [2023-12-25 18:08:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725301114] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:08:56,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:08:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:08:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37543215] [2023-12-25 18:08:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:08:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:08:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:08:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:08:56,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:08:56,842 INFO L87 Difference]: Start difference. First operand 7634 states and 12708 transitions. Second operand has 5 states, 5 states have (on average 902.0) internal successors, (4510), 5 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:09:03,982 INFO L93 Difference]: Finished difference Result 26542 states and 43976 transitions. [2023-12-25 18:09:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:09:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 902.0) internal successors, (4510), 5 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5035 [2023-12-25 18:09:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:09:04,000 INFO L225 Difference]: With dead ends: 26542 [2023-12-25 18:09:04,001 INFO L226 Difference]: Without dead ends: 14105 [2023-12-25 18:09:04,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10069 GetRequests, 10060 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:09:04,009 INFO L413 NwaCegarLoop]: 18458 mSDtfsCounter, 28607 mSDsluCounter, 18133 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28607 SdHoareTripleChecker+Valid, 36591 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:09:04,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28607 Valid, 36591 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:09:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14105 states. [2023-12-25 18:09:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14105 to 7636. [2023-12-25 18:09:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 7635 states have (on average 1.664702030124427) internal successors, (12710), 7635 states have internal predecessors, (12710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 12710 transitions. [2023-12-25 18:09:04,127 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 12710 transitions. Word has length 5035 [2023-12-25 18:09:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:09:04,130 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 12710 transitions. [2023-12-25 18:09:04,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 902.0) internal successors, (4510), 5 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 12710 transitions. [2023-12-25 18:09:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5037 [2023-12-25 18:09:04,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:09:04,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:09:04,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 18:09:04,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:09:04,463 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:09:04,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:09:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1612563756, now seen corresponding path program 1 times [2023-12-25 18:09:04,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:09:04,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534970837] [2023-12-25 18:09:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:09:04,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:09:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259400525] [2023-12-25 18:09:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:04,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:09:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:09:04,842 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:09:04,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 18:09:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:09:11,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 25883 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:09:11,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:09:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 32 proven. 441 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-25 18:09:11,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:09:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-25 18:09:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:09:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534970837] [2023-12-25 18:09:11,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:09:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259400525] [2023-12-25 18:09:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259400525] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:09:11,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:09:11,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:09:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625093545] [2023-12-25 18:09:11,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:09:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:09:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:09:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:09:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:09:11,925 INFO L87 Difference]: Start difference. First operand 7636 states and 12710 transitions. Second operand has 5 states, 5 states have (on average 902.6) internal successors, (4513), 5 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:09:19,686 INFO L93 Difference]: Finished difference Result 26550 states and 43984 transitions. [2023-12-25 18:09:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:09:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 902.6) internal successors, (4513), 5 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5036 [2023-12-25 18:09:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:09:19,703 INFO L225 Difference]: With dead ends: 26550 [2023-12-25 18:09:19,703 INFO L226 Difference]: Without dead ends: 14106 [2023-12-25 18:09:19,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10071 GetRequests, 10062 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:09:19,714 INFO L413 NwaCegarLoop]: 18450 mSDtfsCounter, 19671 mSDsluCounter, 27602 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19671 SdHoareTripleChecker+Valid, 46052 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-25 18:09:19,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19671 Valid, 46052 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-25 18:09:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14106 states. [2023-12-25 18:09:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14106 to 7638. [2023-12-25 18:09:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7638 states, 7637 states have (on average 1.6645279560036663) internal successors, (12712), 7637 states have internal predecessors, (12712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 12712 transitions. [2023-12-25 18:09:19,801 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 12712 transitions. Word has length 5036 [2023-12-25 18:09:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:09:19,803 INFO L495 AbstractCegarLoop]: Abstraction has 7638 states and 12712 transitions. [2023-12-25 18:09:19,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 902.6) internal successors, (4513), 5 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 12712 transitions. [2023-12-25 18:09:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5038 [2023-12-25 18:09:19,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:09:19,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:09:20,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-25 18:09:20,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-25 18:09:20,127 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:09:20,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:09:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1684587050, now seen corresponding path program 1 times [2023-12-25 18:09:20,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:09:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868292513] [2023-12-25 18:09:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:09:20,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:09:20,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857041415] [2023-12-25 18:09:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:20,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:09:20,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:09:20,493 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:09:20,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 18:09:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:09:26,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 25886 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:09:26,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:09:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 34 proven. 441 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-25 18:09:27,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:09:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2023-12-25 18:09:27,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:09:27,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868292513] [2023-12-25 18:09:27,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:09:27,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857041415] [2023-12-25 18:09:27,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857041415] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:09:27,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:09:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:09:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187377579] [2023-12-25 18:09:27,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:09:27,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:09:27,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:09:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:09:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:09:27,173 INFO L87 Difference]: Start difference. First operand 7638 states and 12712 transitions. Second operand has 5 states, 5 states have (on average 903.2) internal successors, (4516), 5 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:09:33,561 INFO L93 Difference]: Finished difference Result 26558 states and 43992 transitions. [2023-12-25 18:09:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:09:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 903.2) internal successors, (4516), 5 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5037 [2023-12-25 18:09:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:09:33,581 INFO L225 Difference]: With dead ends: 26558 [2023-12-25 18:09:33,581 INFO L226 Difference]: Without dead ends: 14107 [2023-12-25 18:09:33,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10073 GetRequests, 10064 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:09:33,591 INFO L413 NwaCegarLoop]: 18442 mSDtfsCounter, 28591 mSDsluCounter, 18123 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28591 SdHoareTripleChecker+Valid, 36565 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:09:33,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28591 Valid, 36565 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 18:09:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2023-12-25 18:09:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 7640. [2023-12-25 18:09:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7640 states, 7639 states have (on average 1.6643539730331196) internal successors, (12714), 7639 states have internal predecessors, (12714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7640 states to 7640 states and 12714 transitions. [2023-12-25 18:09:33,687 INFO L78 Accepts]: Start accepts. Automaton has 7640 states and 12714 transitions. Word has length 5037 [2023-12-25 18:09:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:09:33,689 INFO L495 AbstractCegarLoop]: Abstraction has 7640 states and 12714 transitions. [2023-12-25 18:09:33,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 903.2) internal successors, (4516), 5 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7640 states and 12714 transitions. [2023-12-25 18:09:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5039 [2023-12-25 18:09:33,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:09:33,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:09:33,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 18:09:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-25 18:09:34,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:09:34,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:09:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1984017478, now seen corresponding path program 1 times [2023-12-25 18:09:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:09:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968118550] [2023-12-25 18:09:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:09:34,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:09:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144297794] [2023-12-25 18:09:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:34,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:09:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:09:34,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:09:34,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 18:09:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:09:40,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 25889 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:09:40,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:09:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 36 proven. 441 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-25 18:09:40,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:09:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2023-12-25 18:09:41,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:09:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968118550] [2023-12-25 18:09:41,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:09:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144297794] [2023-12-25 18:09:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144297794] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:09:41,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:09:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:09:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719168157] [2023-12-25 18:09:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:09:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:09:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:09:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:09:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:09:41,030 INFO L87 Difference]: Start difference. First operand 7640 states and 12714 transitions. Second operand has 5 states, 5 states have (on average 903.8) internal successors, (4519), 5 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:09:47,601 INFO L93 Difference]: Finished difference Result 26566 states and 44000 transitions. [2023-12-25 18:09:47,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:09:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 903.8) internal successors, (4519), 5 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5038 [2023-12-25 18:09:47,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:09:47,615 INFO L225 Difference]: With dead ends: 26566 [2023-12-25 18:09:47,615 INFO L226 Difference]: Without dead ends: 14108 [2023-12-25 18:09:47,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10075 GetRequests, 10066 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:09:47,622 INFO L413 NwaCegarLoop]: 18434 mSDtfsCounter, 28583 mSDsluCounter, 18118 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28583 SdHoareTripleChecker+Valid, 36552 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 18:09:47,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28583 Valid, 36552 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 18:09:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14108 states. [2023-12-25 18:09:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14108 to 7642. [2023-12-25 18:09:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7642 states, 7641 states have (on average 1.664180081141212) internal successors, (12716), 7641 states have internal predecessors, (12716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7642 states to 7642 states and 12716 transitions. [2023-12-25 18:09:47,703 INFO L78 Accepts]: Start accepts. Automaton has 7642 states and 12716 transitions. Word has length 5038 [2023-12-25 18:09:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:09:47,705 INFO L495 AbstractCegarLoop]: Abstraction has 7642 states and 12716 transitions. [2023-12-25 18:09:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 903.8) internal successors, (4519), 5 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:09:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 7642 states and 12716 transitions. [2023-12-25 18:09:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5040 [2023-12-25 18:09:47,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:09:47,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:09:47,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 18:09:48,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:09:48,031 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:09:48,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:09:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash 663114820, now seen corresponding path program 1 times [2023-12-25 18:09:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:09:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550180237] [2023-12-25 18:09:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:09:48,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:09:48,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782426515] [2023-12-25 18:09:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:09:48,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:09:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:09:48,382 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:09:48,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 18:09:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:09:54,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 25892 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:09:54,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:09:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 38 proven. 441 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-25 18:09:54,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:09:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-12-25 18:09:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:09:54,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550180237] [2023-12-25 18:09:54,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:09:54,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782426515] [2023-12-25 18:09:54,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782426515] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:09:54,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:09:54,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:09:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083979915] [2023-12-25 18:09:54,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:09:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:09:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:09:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:09:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:09:55,003 INFO L87 Difference]: Start difference. First operand 7642 states and 12716 transitions. Second operand has 5 states, 5 states have (on average 904.4) internal successors, (4522), 5 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:10:02,337 INFO L93 Difference]: Finished difference Result 26574 states and 44008 transitions. [2023-12-25 18:10:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:10:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 904.4) internal successors, (4522), 5 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5039 [2023-12-25 18:10:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:10:02,356 INFO L225 Difference]: With dead ends: 26574 [2023-12-25 18:10:02,356 INFO L226 Difference]: Without dead ends: 14109 [2023-12-25 18:10:02,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10077 GetRequests, 10068 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:10:02,369 INFO L413 NwaCegarLoop]: 18426 mSDtfsCounter, 19653 mSDsluCounter, 27572 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19653 SdHoareTripleChecker+Valid, 45998 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:10:02,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19653 Valid, 45998 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 18:10:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14109 states. [2023-12-25 18:10:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14109 to 7644. [2023-12-25 18:10:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7644 states, 7643 states have (on average 1.6640062802564437) internal successors, (12718), 7643 states have internal predecessors, (12718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 12718 transitions. [2023-12-25 18:10:02,461 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 12718 transitions. Word has length 5039 [2023-12-25 18:10:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:10:02,463 INFO L495 AbstractCegarLoop]: Abstraction has 7644 states and 12718 transitions. [2023-12-25 18:10:02,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 904.4) internal successors, (4522), 5 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 12718 transitions. [2023-12-25 18:10:02,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5041 [2023-12-25 18:10:02,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:10:02,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:10:02,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 18:10:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:10:02,883 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:10:02,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:10:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2007171874, now seen corresponding path program 1 times [2023-12-25 18:10:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:10:02,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586089376] [2023-12-25 18:10:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:10:03,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:10:03,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739334522] [2023-12-25 18:10:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:03,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:10:03,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:10:03,235 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:10:03,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 18:10:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:10:09,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 25896 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:10:09,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:10:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 40 proven. 441 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-25 18:10:09,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:10:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-25 18:10:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:10:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586089376] [2023-12-25 18:10:10,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:10:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739334522] [2023-12-25 18:10:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739334522] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:10:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:10:10,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:10:10,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844432491] [2023-12-25 18:10:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:10:10,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:10:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:10:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:10:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:10:10,309 INFO L87 Difference]: Start difference. First operand 7644 states and 12718 transitions. Second operand has 5 states, 5 states have (on average 905.0) internal successors, (4525), 5 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:10:17,392 INFO L93 Difference]: Finished difference Result 26582 states and 44016 transitions. [2023-12-25 18:10:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:10:17,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 905.0) internal successors, (4525), 5 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5040 [2023-12-25 18:10:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:10:17,413 INFO L225 Difference]: With dead ends: 26582 [2023-12-25 18:10:17,413 INFO L226 Difference]: Without dead ends: 14110 [2023-12-25 18:10:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10079 GetRequests, 10070 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:10:17,426 INFO L413 NwaCegarLoop]: 18418 mSDtfsCounter, 28567 mSDsluCounter, 18108 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28567 SdHoareTripleChecker+Valid, 36526 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:10:17,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28567 Valid, 36526 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:10:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14110 states. [2023-12-25 18:10:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14110 to 7646. [2023-12-25 18:10:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7646 states, 7645 states have (on average 1.6638325703073904) internal successors, (12720), 7645 states have internal predecessors, (12720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 12720 transitions. [2023-12-25 18:10:17,539 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 12720 transitions. Word has length 5040 [2023-12-25 18:10:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:10:17,541 INFO L495 AbstractCegarLoop]: Abstraction has 7646 states and 12720 transitions. [2023-12-25 18:10:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 905.0) internal successors, (4525), 5 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 12720 transitions. [2023-12-25 18:10:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5042 [2023-12-25 18:10:17,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:10:17,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:10:17,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 18:10:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-25 18:10:17,996 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:10:17,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:10:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash -302632292, now seen corresponding path program 1 times [2023-12-25 18:10:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:10:17,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536613633] [2023-12-25 18:10:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:17,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:10:18,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:10:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752805726] [2023-12-25 18:10:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:18,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:10:18,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:10:18,387 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:10:18,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 18:10:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:10:24,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 25899 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:10:24,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:10:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 42 proven. 441 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-25 18:10:25,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:10:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2023-12-25 18:10:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:10:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536613633] [2023-12-25 18:10:25,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:10:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752805726] [2023-12-25 18:10:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752805726] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:10:25,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:10:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:10:25,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088754201] [2023-12-25 18:10:25,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:10:25,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:10:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:10:25,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:10:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:10:25,651 INFO L87 Difference]: Start difference. First operand 7646 states and 12720 transitions. Second operand has 5 states, 5 states have (on average 905.6) internal successors, (4528), 5 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:10:34,108 INFO L93 Difference]: Finished difference Result 26590 states and 44024 transitions. [2023-12-25 18:10:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:10:34,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 905.6) internal successors, (4528), 5 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5041 [2023-12-25 18:10:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:10:34,125 INFO L225 Difference]: With dead ends: 26590 [2023-12-25 18:10:34,125 INFO L226 Difference]: Without dead ends: 14111 [2023-12-25 18:10:34,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10081 GetRequests, 10072 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:10:34,130 INFO L413 NwaCegarLoop]: 18410 mSDtfsCounter, 19641 mSDsluCounter, 27552 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19641 SdHoareTripleChecker+Valid, 45962 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:10:34,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19641 Valid, 45962 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-25 18:10:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14111 states. [2023-12-25 18:10:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14111 to 7648. [2023-12-25 18:10:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 7647 states have (on average 1.6636589512227018) internal successors, (12722), 7647 states have internal predecessors, (12722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 12722 transitions. [2023-12-25 18:10:34,234 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 12722 transitions. Word has length 5041 [2023-12-25 18:10:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:10:34,237 INFO L495 AbstractCegarLoop]: Abstraction has 7648 states and 12722 transitions. [2023-12-25 18:10:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 905.6) internal successors, (4528), 5 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 12722 transitions. [2023-12-25 18:10:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5043 [2023-12-25 18:10:34,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:10:34,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:10:34,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 18:10:34,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 18:10:34,570 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:10:34,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:10:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 913887684, now seen corresponding path program 1 times [2023-12-25 18:10:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:10:34,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658706911] [2023-12-25 18:10:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:34,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:10:34,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:10:34,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812002174] [2023-12-25 18:10:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:34,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:10:34,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:10:34,979 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:10:34,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 18:10:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:10:41,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 25902 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:10:41,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:10:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 44 proven. 441 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-25 18:10:42,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:10:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-25 18:10:42,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:10:42,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658706911] [2023-12-25 18:10:42,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:10:42,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812002174] [2023-12-25 18:10:42,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812002174] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:10:42,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:10:42,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:10:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010495909] [2023-12-25 18:10:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:10:42,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:10:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:10:42,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:10:42,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:10:42,333 INFO L87 Difference]: Start difference. First operand 7648 states and 12722 transitions. Second operand has 5 states, 5 states have (on average 906.2) internal successors, (4531), 5 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:10:49,573 INFO L93 Difference]: Finished difference Result 26598 states and 44032 transitions. [2023-12-25 18:10:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:10:49,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 906.2) internal successors, (4531), 5 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5042 [2023-12-25 18:10:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:10:49,593 INFO L225 Difference]: With dead ends: 26598 [2023-12-25 18:10:49,593 INFO L226 Difference]: Without dead ends: 14112 [2023-12-25 18:10:49,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10083 GetRequests, 10074 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:10:49,602 INFO L413 NwaCegarLoop]: 18402 mSDtfsCounter, 28531 mSDsluCounter, 18099 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28531 SdHoareTripleChecker+Valid, 36501 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:10:49,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28531 Valid, 36501 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:10:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14112 states. [2023-12-25 18:10:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14112 to 7650. [2023-12-25 18:10:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7650 states, 7649 states have (on average 1.663485422931102) internal successors, (12724), 7649 states have internal predecessors, (12724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 12724 transitions. [2023-12-25 18:10:49,715 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 12724 transitions. Word has length 5042 [2023-12-25 18:10:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:10:49,717 INFO L495 AbstractCegarLoop]: Abstraction has 7650 states and 12724 transitions. [2023-12-25 18:10:49,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 906.2) internal successors, (4531), 5 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:10:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 12724 transitions. [2023-12-25 18:10:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5044 [2023-12-25 18:10:49,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:10:49,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:10:49,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 18:10:50,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-25 18:10:50,064 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:10:50,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:10:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash 812982454, now seen corresponding path program 1 times [2023-12-25 18:10:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:10:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599153363] [2023-12-25 18:10:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:10:50,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:10:50,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728878983] [2023-12-25 18:10:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:10:50,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:10:50,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:10:50,539 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:10:50,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 18:10:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:10:57,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 25905 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:10:57,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:10:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 46 proven. 441 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-25 18:10:57,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:10:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-25 18:10:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:10:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599153363] [2023-12-25 18:10:58,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:10:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728878983] [2023-12-25 18:10:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728878983] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:10:58,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:10:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:10:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874148133] [2023-12-25 18:10:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:10:58,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:10:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:10:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:10:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:10:58,081 INFO L87 Difference]: Start difference. First operand 7650 states and 12724 transitions. Second operand has 5 states, 5 states have (on average 906.8) internal successors, (4534), 5 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:11:05,215 INFO L93 Difference]: Finished difference Result 26606 states and 44040 transitions. [2023-12-25 18:11:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:11:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 906.8) internal successors, (4534), 5 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5043 [2023-12-25 18:11:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:11:05,239 INFO L225 Difference]: With dead ends: 26606 [2023-12-25 18:11:05,239 INFO L226 Difference]: Without dead ends: 14113 [2023-12-25 18:11:05,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10085 GetRequests, 10076 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:11:05,254 INFO L413 NwaCegarLoop]: 18394 mSDtfsCounter, 28543 mSDsluCounter, 18093 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28543 SdHoareTripleChecker+Valid, 36487 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:11:05,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28543 Valid, 36487 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:11:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14113 states. [2023-12-25 18:11:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14113 to 7652. [2023-12-25 18:11:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7652 states, 7651 states have (on average 1.6633119853613907) internal successors, (12726), 7651 states have internal predecessors, (12726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 12726 transitions. [2023-12-25 18:11:05,531 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 12726 transitions. Word has length 5043 [2023-12-25 18:11:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:11:05,534 INFO L495 AbstractCegarLoop]: Abstraction has 7652 states and 12726 transitions. [2023-12-25 18:11:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 906.8) internal successors, (4534), 5 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 12726 transitions. [2023-12-25 18:11:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5045 [2023-12-25 18:11:05,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:11:05,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:11:05,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 18:11:05,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:05,869 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:11:05,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:11:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 98277864, now seen corresponding path program 1 times [2023-12-25 18:11:05,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:11:05,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619209028] [2023-12-25 18:11:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:05,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:11:06,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:11:06,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747478533] [2023-12-25 18:11:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:06,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:06,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:11:06,289 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:11:06,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 18:11:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:11:12,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 25909 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:11:12,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:11:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 48 proven. 441 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-25 18:11:13,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:11:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-12-25 18:11:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:11:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619209028] [2023-12-25 18:11:13,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:11:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747478533] [2023-12-25 18:11:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747478533] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:11:13,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:11:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:11:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202559030] [2023-12-25 18:11:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:11:13,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:11:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:11:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:11:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:11:13,676 INFO L87 Difference]: Start difference. First operand 7652 states and 12726 transitions. Second operand has 5 states, 5 states have (on average 907.4) internal successors, (4537), 5 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:11:21,930 INFO L93 Difference]: Finished difference Result 26614 states and 44048 transitions. [2023-12-25 18:11:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:11:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 907.4) internal successors, (4537), 5 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5044 [2023-12-25 18:11:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:11:21,955 INFO L225 Difference]: With dead ends: 26614 [2023-12-25 18:11:21,955 INFO L226 Difference]: Without dead ends: 14114 [2023-12-25 18:11:21,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10087 GetRequests, 10078 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:11:21,971 INFO L413 NwaCegarLoop]: 18386 mSDtfsCounter, 19623 mSDsluCounter, 27522 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19623 SdHoareTripleChecker+Valid, 45908 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:11:21,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19623 Valid, 45908 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-25 18:11:21,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14114 states. [2023-12-25 18:11:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14114 to 7654. [2023-12-25 18:11:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7654 states, 7653 states have (on average 1.663138638442441) internal successors, (12728), 7653 states have internal predecessors, (12728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7654 states to 7654 states and 12728 transitions. [2023-12-25 18:11:22,100 INFO L78 Accepts]: Start accepts. Automaton has 7654 states and 12728 transitions. Word has length 5044 [2023-12-25 18:11:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:11:22,102 INFO L495 AbstractCegarLoop]: Abstraction has 7654 states and 12728 transitions. [2023-12-25 18:11:22,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 907.4) internal successors, (4537), 5 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7654 states and 12728 transitions. [2023-12-25 18:11:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5046 [2023-12-25 18:11:22,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:11:22,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:11:22,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-25 18:11:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 18:11:22,453 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:11:22,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:11:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash 877604366, now seen corresponding path program 1 times [2023-12-25 18:11:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:11:22,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672006949] [2023-12-25 18:11:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:11:22,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:11:22,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194473995] [2023-12-25 18:11:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:22,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:11:22,899 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:11:22,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 18:11:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:11:29,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 25912 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:11:29,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:11:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 50 proven. 441 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-25 18:11:29,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:11:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-25 18:11:30,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:11:30,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672006949] [2023-12-25 18:11:30,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:11:30,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194473995] [2023-12-25 18:11:30,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194473995] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:11:30,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:11:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:11:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305733869] [2023-12-25 18:11:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:11:30,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:11:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:11:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:11:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:11:30,032 INFO L87 Difference]: Start difference. First operand 7654 states and 12728 transitions. Second operand has 5 states, 5 states have (on average 908.0) internal successors, (4540), 5 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:11:37,232 INFO L93 Difference]: Finished difference Result 26622 states and 44056 transitions. [2023-12-25 18:11:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:11:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 908.0) internal successors, (4540), 5 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5045 [2023-12-25 18:11:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:11:37,256 INFO L225 Difference]: With dead ends: 26622 [2023-12-25 18:11:37,256 INFO L226 Difference]: Without dead ends: 14115 [2023-12-25 18:11:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10089 GetRequests, 10080 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:11:37,271 INFO L413 NwaCegarLoop]: 18378 mSDtfsCounter, 28527 mSDsluCounter, 18083 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28527 SdHoareTripleChecker+Valid, 36461 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:11:37,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28527 Valid, 36461 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:11:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14115 states. [2023-12-25 18:11:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14115 to 7656. [2023-12-25 18:11:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7655 states have (on average 1.6629653821032004) internal successors, (12730), 7655 states have internal predecessors, (12730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 12730 transitions. [2023-12-25 18:11:37,392 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 12730 transitions. Word has length 5045 [2023-12-25 18:11:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:11:37,395 INFO L495 AbstractCegarLoop]: Abstraction has 7656 states and 12730 transitions. [2023-12-25 18:11:37,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 908.0) internal successors, (4540), 5 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 12730 transitions. [2023-12-25 18:11:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5047 [2023-12-25 18:11:37,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:11:37,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:11:37,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 18:11:37,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:37,729 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:11:37,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:11:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1190310606, now seen corresponding path program 1 times [2023-12-25 18:11:37,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:11:37,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385553803] [2023-12-25 18:11:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:11:38,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:11:38,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183371324] [2023-12-25 18:11:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:38,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:11:38,236 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:11:38,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 18:11:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:11:44,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 25915 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:11:44,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:11:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 52 proven. 441 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-25 18:11:45,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:11:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-25 18:11:45,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:11:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385553803] [2023-12-25 18:11:45,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:11:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183371324] [2023-12-25 18:11:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183371324] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:11:45,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:11:45,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:11:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170658856] [2023-12-25 18:11:45,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:11:45,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:11:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:11:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:11:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:11:45,653 INFO L87 Difference]: Start difference. First operand 7656 states and 12730 transitions. Second operand has 5 states, 5 states have (on average 908.6) internal successors, (4543), 5 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:11:52,885 INFO L93 Difference]: Finished difference Result 26630 states and 44064 transitions. [2023-12-25 18:11:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:11:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 908.6) internal successors, (4543), 5 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5046 [2023-12-25 18:11:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:11:52,906 INFO L225 Difference]: With dead ends: 26630 [2023-12-25 18:11:52,906 INFO L226 Difference]: Without dead ends: 14116 [2023-12-25 18:11:52,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10091 GetRequests, 10082 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:11:52,918 INFO L413 NwaCegarLoop]: 18370 mSDtfsCounter, 28519 mSDsluCounter, 18078 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28519 SdHoareTripleChecker+Valid, 36448 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:11:52,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28519 Valid, 36448 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:11:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14116 states. [2023-12-25 18:11:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14116 to 7658. [2023-12-25 18:11:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7658 states, 7657 states have (on average 1.6627922162726916) internal successors, (12732), 7657 states have internal predecessors, (12732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 12732 transitions. [2023-12-25 18:11:53,031 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 12732 transitions. Word has length 5046 [2023-12-25 18:11:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:11:53,034 INFO L495 AbstractCegarLoop]: Abstraction has 7658 states and 12732 transitions. [2023-12-25 18:11:53,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 908.6) internal successors, (4543), 5 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:11:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 12732 transitions. [2023-12-25 18:11:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5048 [2023-12-25 18:11:53,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:11:53,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:11:53,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 18:11:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:53,380 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:11:53,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:11:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1493960664, now seen corresponding path program 1 times [2023-12-25 18:11:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:11:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238667470] [2023-12-25 18:11:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:53,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:11:53,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:11:53,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183644035] [2023-12-25 18:11:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:11:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:11:53,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:11:53,865 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:11:53,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 18:12:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:12:00,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 25918 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 18:12:00,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:12:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 54 proven. 441 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-25 18:12:01,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:12:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-12-25 18:12:01,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:12:01,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238667470] [2023-12-25 18:12:01,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:12:01,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183644035] [2023-12-25 18:12:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183644035] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:12:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:12:01,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 18:12:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502668783] [2023-12-25 18:12:01,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:12:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 18:12:01,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:12:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 18:12:01,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 18:12:01,889 INFO L87 Difference]: Start difference. First operand 7658 states and 12732 transitions. Second operand has 6 states, 6 states have (on average 757.6666666666666) internal successors, (4546), 6 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:12:15,118 INFO L93 Difference]: Finished difference Result 33239 states and 55043 transitions. [2023-12-25 18:12:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 18:12:15,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 757.6666666666666) internal successors, (4546), 6 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5047 [2023-12-25 18:12:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:12:15,144 INFO L225 Difference]: With dead ends: 33239 [2023-12-25 18:12:15,144 INFO L226 Difference]: Without dead ends: 20718 [2023-12-25 18:12:15,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10094 GetRequests, 10082 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 18:12:15,155 INFO L413 NwaCegarLoop]: 18364 mSDtfsCounter, 48193 mSDsluCounter, 44164 mSDsCounter, 0 mSdLazyCounter, 18768 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48193 SdHoareTripleChecker+Valid, 62528 SdHoareTripleChecker+Invalid, 19385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 18768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-25 18:12:15,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48193 Valid, 62528 Invalid, 19385 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [617 Valid, 18768 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-12-25 18:12:15,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20718 states. [2023-12-25 18:12:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20718 to 7660. [2023-12-25 18:12:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7660 states, 7659 states have (on average 1.6626191408800104) internal successors, (12734), 7659 states have internal predecessors, (12734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7660 states to 7660 states and 12734 transitions. [2023-12-25 18:12:15,281 INFO L78 Accepts]: Start accepts. Automaton has 7660 states and 12734 transitions. Word has length 5047 [2023-12-25 18:12:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:12:15,283 INFO L495 AbstractCegarLoop]: Abstraction has 7660 states and 12734 transitions. [2023-12-25 18:12:15,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 757.6666666666666) internal successors, (4546), 6 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states and 12734 transitions. [2023-12-25 18:12:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5049 [2023-12-25 18:12:15,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:12:15,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:12:15,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-25 18:12:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:12:15,653 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:12:15,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:12:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2138009102, now seen corresponding path program 1 times [2023-12-25 18:12:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:12:15,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723474264] [2023-12-25 18:12:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:12:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:12:16,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:12:16,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004368080] [2023-12-25 18:12:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:12:16,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:12:16,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:12:16,059 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:12:16,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 18:12:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:12:22,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 25922 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:12:22,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:12:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 56 proven. 441 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-25 18:12:23,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:12:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2023-12-25 18:12:23,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:12:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723474264] [2023-12-25 18:12:23,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:12:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004368080] [2023-12-25 18:12:23,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004368080] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:12:23,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:12:23,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:12:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243837713] [2023-12-25 18:12:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:12:23,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:12:23,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:12:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:12:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:12:23,455 INFO L87 Difference]: Start difference. First operand 7660 states and 12734 transitions. Second operand has 5 states, 5 states have (on average 909.8) internal successors, (4549), 5 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:12:31,768 INFO L93 Difference]: Finished difference Result 26646 states and 44080 transitions. [2023-12-25 18:12:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:12:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 909.8) internal successors, (4549), 5 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5048 [2023-12-25 18:12:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:12:31,784 INFO L225 Difference]: With dead ends: 26646 [2023-12-25 18:12:31,785 INFO L226 Difference]: Without dead ends: 14118 [2023-12-25 18:12:31,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10095 GetRequests, 10086 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:12:31,795 INFO L413 NwaCegarLoop]: 18354 mSDtfsCounter, 19599 mSDsluCounter, 27482 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19599 SdHoareTripleChecker+Valid, 45836 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:12:31,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19599 Valid, 45836 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-25 18:12:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14118 states. [2023-12-25 18:12:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14118 to 7662. [2023-12-25 18:12:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7661 states have (on average 1.662446155854327) internal successors, (12736), 7661 states have internal predecessors, (12736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 12736 transitions. [2023-12-25 18:12:31,901 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 12736 transitions. Word has length 5048 [2023-12-25 18:12:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:12:31,904 INFO L495 AbstractCegarLoop]: Abstraction has 7662 states and 12736 transitions. [2023-12-25 18:12:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 909.8) internal successors, (4549), 5 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 12736 transitions. [2023-12-25 18:12:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5050 [2023-12-25 18:12:32,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:12:32,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:12:32,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 18:12:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:12:32,242 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:12:32,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:12:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1984416640, now seen corresponding path program 1 times [2023-12-25 18:12:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:12:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361244282] [2023-12-25 18:12:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:12:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:12:32,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:12:32,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476860049] [2023-12-25 18:12:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:12:32,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:12:32,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:12:32,806 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:12:32,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 18:12:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:12:39,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 25925 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:12:39,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:12:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 58 proven. 441 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-25 18:12:39,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:12:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2023-12-25 18:12:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:12:40,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361244282] [2023-12-25 18:12:40,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:12:40,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476860049] [2023-12-25 18:12:40,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476860049] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:12:40,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:12:40,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:12:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967032442] [2023-12-25 18:12:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:12:40,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:12:40,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:12:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:12:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:12:40,102 INFO L87 Difference]: Start difference. First operand 7662 states and 12736 transitions. Second operand has 5 states, 5 states have (on average 910.4) internal successors, (4552), 5 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:12:47,353 INFO L93 Difference]: Finished difference Result 26654 states and 44088 transitions. [2023-12-25 18:12:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:12:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 910.4) internal successors, (4552), 5 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5049 [2023-12-25 18:12:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:12:47,368 INFO L225 Difference]: With dead ends: 26654 [2023-12-25 18:12:47,369 INFO L226 Difference]: Without dead ends: 14119 [2023-12-25 18:12:47,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10097 GetRequests, 10088 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:12:47,376 INFO L413 NwaCegarLoop]: 18346 mSDtfsCounter, 28468 mSDsluCounter, 18064 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28468 SdHoareTripleChecker+Valid, 36410 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:12:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28468 Valid, 36410 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:12:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14119 states. [2023-12-25 18:12:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14119 to 7664. [2023-12-25 18:12:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7664 states, 7663 states have (on average 1.6622732611248858) internal successors, (12738), 7663 states have internal predecessors, (12738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7664 states to 7664 states and 12738 transitions. [2023-12-25 18:12:47,472 INFO L78 Accepts]: Start accepts. Automaton has 7664 states and 12738 transitions. Word has length 5049 [2023-12-25 18:12:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:12:47,475 INFO L495 AbstractCegarLoop]: Abstraction has 7664 states and 12738 transitions. [2023-12-25 18:12:47,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 910.4) internal successors, (4552), 5 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:12:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7664 states and 12738 transitions. [2023-12-25 18:12:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5051 [2023-12-25 18:12:47,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:12:47,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:12:47,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-25 18:12:47,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-25 18:12:47,806 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:12:47,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:12:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1767796440, now seen corresponding path program 1 times [2023-12-25 18:12:47,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:12:47,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458504221] [2023-12-25 18:12:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:12:47,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:12:48,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:12:48,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053699813] [2023-12-25 18:12:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:12:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:12:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:12:48,306 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:12:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 18:12:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:12:54,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 25928 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:12:54,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:12:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 60 proven. 441 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-25 18:12:55,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:12:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-25 18:12:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:12:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458504221] [2023-12-25 18:12:55,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:12:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053699813] [2023-12-25 18:12:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053699813] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:12:55,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:12:55,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:12:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219414778] [2023-12-25 18:12:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:12:55,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:12:55,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:12:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:12:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:12:55,568 INFO L87 Difference]: Start difference. First operand 7664 states and 12738 transitions. Second operand has 5 states, 5 states have (on average 911.0) internal successors, (4555), 5 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:13:02,822 INFO L93 Difference]: Finished difference Result 26662 states and 44096 transitions. [2023-12-25 18:13:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:13:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 911.0) internal successors, (4555), 5 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5050 [2023-12-25 18:13:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:13:02,845 INFO L225 Difference]: With dead ends: 26662 [2023-12-25 18:13:02,845 INFO L226 Difference]: Without dead ends: 14120 [2023-12-25 18:13:02,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10099 GetRequests, 10090 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:13:02,857 INFO L413 NwaCegarLoop]: 18338 mSDtfsCounter, 28487 mSDsluCounter, 18058 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28487 SdHoareTripleChecker+Valid, 36396 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:13:02,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28487 Valid, 36396 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:13:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14120 states. [2023-12-25 18:13:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14120 to 7666. [2023-12-25 18:13:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7666 states, 7665 states have (on average 1.6621004566210045) internal successors, (12740), 7665 states have internal predecessors, (12740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 12740 transitions. [2023-12-25 18:13:02,971 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 12740 transitions. Word has length 5050 [2023-12-25 18:13:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:13:02,974 INFO L495 AbstractCegarLoop]: Abstraction has 7666 states and 12740 transitions. [2023-12-25 18:13:02,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 911.0) internal successors, (4555), 5 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 12740 transitions. [2023-12-25 18:13:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5052 [2023-12-25 18:13:03,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:13:03,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:13:03,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-25 18:13:03,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-25 18:13:03,305 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:13:03,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:13:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1085842790, now seen corresponding path program 1 times [2023-12-25 18:13:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:13:03,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691849018] [2023-12-25 18:13:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:13:03,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:13:03,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743986322] [2023-12-25 18:13:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:03,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:13:03,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:13:03,708 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:13:03,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 18:13:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:13:10,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 25931 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:13:10,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:13:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 62 proven. 441 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-25 18:13:10,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:13:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2023-12-25 18:13:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:13:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691849018] [2023-12-25 18:13:10,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:13:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743986322] [2023-12-25 18:13:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743986322] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:13:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:13:10,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:13:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067612136] [2023-12-25 18:13:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:13:10,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:13:10,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:13:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:13:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:13:10,910 INFO L87 Difference]: Start difference. First operand 7666 states and 12740 transitions. Second operand has 5 states, 5 states have (on average 911.6) internal successors, (4558), 5 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:13:18,124 INFO L93 Difference]: Finished difference Result 26670 states and 44104 transitions. [2023-12-25 18:13:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:13:18,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 911.6) internal successors, (4558), 5 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5051 [2023-12-25 18:13:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:13:18,159 INFO L225 Difference]: With dead ends: 26670 [2023-12-25 18:13:18,159 INFO L226 Difference]: Without dead ends: 14121 [2023-12-25 18:13:18,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10101 GetRequests, 10092 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:13:18,176 INFO L413 NwaCegarLoop]: 18330 mSDtfsCounter, 28450 mSDsluCounter, 18054 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28450 SdHoareTripleChecker+Valid, 36384 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:13:18,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28450 Valid, 36384 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:13:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14121 states. [2023-12-25 18:13:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14121 to 7668. [2023-12-25 18:13:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7668 states, 7667 states have (on average 1.661927742272075) internal successors, (12742), 7667 states have internal predecessors, (12742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 12742 transitions. [2023-12-25 18:13:18,314 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 12742 transitions. Word has length 5051 [2023-12-25 18:13:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:13:18,318 INFO L495 AbstractCegarLoop]: Abstraction has 7668 states and 12742 transitions. [2023-12-25 18:13:18,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 911.6) internal successors, (4558), 5 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 12742 transitions. [2023-12-25 18:13:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5053 [2023-12-25 18:13:18,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:13:18,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:13:18,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-25 18:13:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-25 18:13:18,656 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:13:18,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:13:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1601070332, now seen corresponding path program 1 times [2023-12-25 18:13:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:13:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449552918] [2023-12-25 18:13:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:13:19,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:13:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692845853] [2023-12-25 18:13:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:19,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:13:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:13:19,068 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:13:19,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 18:13:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:13:25,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 25935 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:13:25,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:13:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 64 proven. 441 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-25 18:13:26,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:13:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-12-25 18:13:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:13:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449552918] [2023-12-25 18:13:26,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:13:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692845853] [2023-12-25 18:13:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692845853] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:13:26,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:13:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:13:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495471618] [2023-12-25 18:13:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:13:26,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:13:26,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:13:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:13:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:13:26,272 INFO L87 Difference]: Start difference. First operand 7668 states and 12742 transitions. Second operand has 5 states, 5 states have (on average 912.2) internal successors, (4561), 5 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:13:33,504 INFO L93 Difference]: Finished difference Result 26678 states and 44112 transitions. [2023-12-25 18:13:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:13:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 912.2) internal successors, (4561), 5 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5052 [2023-12-25 18:13:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:13:33,524 INFO L225 Difference]: With dead ends: 26678 [2023-12-25 18:13:33,524 INFO L226 Difference]: Without dead ends: 14122 [2023-12-25 18:13:33,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10103 GetRequests, 10094 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:13:33,532 INFO L413 NwaCegarLoop]: 18322 mSDtfsCounter, 28471 mSDsluCounter, 18048 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28471 SdHoareTripleChecker+Valid, 36370 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:13:33,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28471 Valid, 36370 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:13:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14122 states. [2023-12-25 18:13:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14122 to 7670. [2023-12-25 18:13:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7670 states, 7669 states have (on average 1.661755118007563) internal successors, (12744), 7669 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 12744 transitions. [2023-12-25 18:13:33,645 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 12744 transitions. Word has length 5052 [2023-12-25 18:13:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:13:33,648 INFO L495 AbstractCegarLoop]: Abstraction has 7670 states and 12744 transitions. [2023-12-25 18:13:33,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 912.2) internal successors, (4561), 5 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 12744 transitions. [2023-12-25 18:13:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5054 [2023-12-25 18:13:33,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:13:33,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:13:33,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-25 18:13:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:13:33,992 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:13:33,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:13:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 389400050, now seen corresponding path program 1 times [2023-12-25 18:13:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:13:33,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846879762] [2023-12-25 18:13:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:13:34,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:13:34,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727298076] [2023-12-25 18:13:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:34,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:13:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:13:34,401 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:13:34,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 18:13:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:13:40,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 25938 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:13:41,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:13:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 66 proven. 441 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-25 18:13:41,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:13:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-25 18:13:41,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:13:41,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846879762] [2023-12-25 18:13:41,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:13:41,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727298076] [2023-12-25 18:13:41,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727298076] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:13:41,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:13:41,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:13:41,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170866522] [2023-12-25 18:13:41,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:13:41,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:13:41,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:13:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:13:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:13:41,773 INFO L87 Difference]: Start difference. First operand 7670 states and 12744 transitions. Second operand has 5 states, 5 states have (on average 912.8) internal successors, (4564), 5 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:13:48,976 INFO L93 Difference]: Finished difference Result 26686 states and 44120 transitions. [2023-12-25 18:13:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:13:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 912.8) internal successors, (4564), 5 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5053 [2023-12-25 18:13:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:13:48,997 INFO L225 Difference]: With dead ends: 26686 [2023-12-25 18:13:48,997 INFO L226 Difference]: Without dead ends: 14123 [2023-12-25 18:13:49,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10105 GetRequests, 10096 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:13:49,008 INFO L413 NwaCegarLoop]: 18314 mSDtfsCounter, 28463 mSDsluCounter, 18043 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28463 SdHoareTripleChecker+Valid, 36357 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:13:49,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28463 Valid, 36357 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 18:13:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2023-12-25 18:13:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 7672. [2023-12-25 18:13:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 7671 states have (on average 1.6615825837570068) internal successors, (12746), 7671 states have internal predecessors, (12746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 12746 transitions. [2023-12-25 18:13:49,135 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 12746 transitions. Word has length 5053 [2023-12-25 18:13:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:13:49,138 INFO L495 AbstractCegarLoop]: Abstraction has 7672 states and 12746 transitions. [2023-12-25 18:13:49,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 912.8) internal successors, (4564), 5 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:13:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 12746 transitions. [2023-12-25 18:13:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5055 [2023-12-25 18:13:49,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:13:49,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:13:49,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-25 18:13:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 18:13:49,473 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:13:49,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:13:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1431403038, now seen corresponding path program 1 times [2023-12-25 18:13:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:13:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474909156] [2023-12-25 18:13:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:13:49,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:13:49,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036255786] [2023-12-25 18:13:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:13:49,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:13:49,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:13:49,883 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:13:49,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 18:13:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:13:56,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 25941 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:13:56,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:13:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 68 proven. 441 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-25 18:13:57,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:13:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-12-25 18:13:57,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:13:57,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474909156] [2023-12-25 18:13:57,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:13:57,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036255786] [2023-12-25 18:13:57,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036255786] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:13:57,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:13:57,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:13:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951315290] [2023-12-25 18:13:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:13:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:13:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:13:57,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:13:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:13:57,324 INFO L87 Difference]: Start difference. First operand 7672 states and 12746 transitions. Second operand has 5 states, 5 states have (on average 913.4) internal successors, (4567), 5 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:14:04,518 INFO L93 Difference]: Finished difference Result 26694 states and 44128 transitions. [2023-12-25 18:14:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:14:04,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 913.4) internal successors, (4567), 5 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5054 [2023-12-25 18:14:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:14:04,539 INFO L225 Difference]: With dead ends: 26694 [2023-12-25 18:14:04,539 INFO L226 Difference]: Without dead ends: 14124 [2023-12-25 18:14:04,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10107 GetRequests, 10098 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:14:04,550 INFO L413 NwaCegarLoop]: 18306 mSDtfsCounter, 28455 mSDsluCounter, 18038 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28455 SdHoareTripleChecker+Valid, 36344 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:14:04,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28455 Valid, 36344 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:14:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2023-12-25 18:14:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 7674. [2023-12-25 18:14:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7674 states, 7673 states have (on average 1.6614101394500196) internal successors, (12748), 7673 states have internal predecessors, (12748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 12748 transitions. [2023-12-25 18:14:04,666 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 12748 transitions. Word has length 5054 [2023-12-25 18:14:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:14:04,668 INFO L495 AbstractCegarLoop]: Abstraction has 7674 states and 12748 transitions. [2023-12-25 18:14:04,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 913.4) internal successors, (4567), 5 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 12748 transitions. [2023-12-25 18:14:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5056 [2023-12-25 18:14:04,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:14:04,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:14:04,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-25 18:14:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 18:14:04,998 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:14:04,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:14:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 611567628, now seen corresponding path program 1 times [2023-12-25 18:14:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:14:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780469884] [2023-12-25 18:14:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:14:05,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:14:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858299237] [2023-12-25 18:14:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:05,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:14:05,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:14:05,395 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:14:05,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 18:14:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:14:11,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 25944 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 18:14:11,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:14:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 441 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 18:14:12,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:14:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-12-25 18:14:12,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:14:12,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780469884] [2023-12-25 18:14:12,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:14:12,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858299237] [2023-12-25 18:14:12,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858299237] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:14:12,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:14:12,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 18:14:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558602020] [2023-12-25 18:14:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:14:12,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 18:14:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:14:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 18:14:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 18:14:12,747 INFO L87 Difference]: Start difference. First operand 7674 states and 12748 transitions. Second operand has 6 states, 6 states have (on average 761.6666666666666) internal successors, (4570), 6 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:14:26,138 INFO L93 Difference]: Finished difference Result 33343 states and 55163 transitions. [2023-12-25 18:14:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 18:14:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 761.6666666666666) internal successors, (4570), 6 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5055 [2023-12-25 18:14:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:14:26,167 INFO L225 Difference]: With dead ends: 33343 [2023-12-25 18:14:26,167 INFO L226 Difference]: Without dead ends: 20766 [2023-12-25 18:14:26,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10110 GetRequests, 10098 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 18:14:26,181 INFO L413 NwaCegarLoop]: 18300 mSDtfsCounter, 48105 mSDsluCounter, 44084 mSDsCounter, 0 mSdLazyCounter, 18768 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48105 SdHoareTripleChecker+Valid, 62384 SdHoareTripleChecker+Invalid, 19385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 18768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-12-25 18:14:26,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48105 Valid, 62384 Invalid, 19385 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [617 Valid, 18768 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2023-12-25 18:14:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20766 states. [2023-12-25 18:14:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20766 to 7676. [2023-12-25 18:14:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7676 states, 7675 states have (on average 1.6612377850162867) internal successors, (12750), 7675 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 12750 transitions. [2023-12-25 18:14:26,328 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 12750 transitions. Word has length 5055 [2023-12-25 18:14:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:14:26,331 INFO L495 AbstractCegarLoop]: Abstraction has 7676 states and 12750 transitions. [2023-12-25 18:14:26,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 761.6666666666666) internal successors, (4570), 6 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 12750 transitions. [2023-12-25 18:14:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5057 [2023-12-25 18:14:26,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:14:26,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:14:26,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-25 18:14:26,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-25 18:14:26,664 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:14:26,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:14:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1473801466, now seen corresponding path program 1 times [2023-12-25 18:14:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:14:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542338072] [2023-12-25 18:14:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:14:27,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:14:27,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278480846] [2023-12-25 18:14:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:27,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:14:27,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:14:27,163 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:14:27,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-25 18:14:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:14:33,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 25948 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:14:33,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:14:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 72 proven. 441 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-25 18:14:34,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:14:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-25 18:14:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:14:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542338072] [2023-12-25 18:14:34,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:14:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278480846] [2023-12-25 18:14:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278480846] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:14:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:14:34,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:14:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927855044] [2023-12-25 18:14:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:14:34,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:14:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:14:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:14:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:14:34,241 INFO L87 Difference]: Start difference. First operand 7676 states and 12750 transitions. Second operand has 5 states, 5 states have (on average 914.6) internal successors, (4573), 5 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:14:41,318 INFO L93 Difference]: Finished difference Result 26710 states and 44144 transitions. [2023-12-25 18:14:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:14:41,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 914.6) internal successors, (4573), 5 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5056 [2023-12-25 18:14:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:14:41,341 INFO L225 Difference]: With dead ends: 26710 [2023-12-25 18:14:41,341 INFO L226 Difference]: Without dead ends: 14126 [2023-12-25 18:14:41,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10111 GetRequests, 10102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:14:41,355 INFO L413 NwaCegarLoop]: 18290 mSDtfsCounter, 28439 mSDsluCounter, 18028 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28439 SdHoareTripleChecker+Valid, 36318 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-25 18:14:41,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28439 Valid, 36318 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-25 18:14:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14126 states. [2023-12-25 18:14:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14126 to 7678. [2023-12-25 18:14:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7677 states have (on average 1.6610655203855673) internal successors, (12752), 7677 states have internal predecessors, (12752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 12752 transitions. [2023-12-25 18:14:41,484 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 12752 transitions. Word has length 5056 [2023-12-25 18:14:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:14:41,486 INFO L495 AbstractCegarLoop]: Abstraction has 7678 states and 12752 transitions. [2023-12-25 18:14:41,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 914.6) internal successors, (4573), 5 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 12752 transitions. [2023-12-25 18:14:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5058 [2023-12-25 18:14:41,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:14:41,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:14:41,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-25 18:14:41,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:14:41,820 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:14:41,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:14:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash -57908636, now seen corresponding path program 1 times [2023-12-25 18:14:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:14:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698607096] [2023-12-25 18:14:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:14:42,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:14:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40926735] [2023-12-25 18:14:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:42,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:14:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:14:42,223 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:14:42,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-25 18:14:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:14:48,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 25951 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:14:48,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:14:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 74 proven. 441 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-25 18:14:49,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:14:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2023-12-25 18:14:49,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:14:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698607096] [2023-12-25 18:14:49,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:14:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40926735] [2023-12-25 18:14:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40926735] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:14:49,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:14:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:14:49,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784474828] [2023-12-25 18:14:49,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:14:49,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:14:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:14:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:14:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:14:49,543 INFO L87 Difference]: Start difference. First operand 7678 states and 12752 transitions. Second operand has 5 states, 5 states have (on average 915.2) internal successors, (4576), 5 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:14:57,309 INFO L93 Difference]: Finished difference Result 26718 states and 44152 transitions. [2023-12-25 18:14:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:14:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 915.2) internal successors, (4576), 5 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5057 [2023-12-25 18:14:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:14:57,329 INFO L225 Difference]: With dead ends: 26718 [2023-12-25 18:14:57,330 INFO L226 Difference]: Without dead ends: 14127 [2023-12-25 18:14:57,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10113 GetRequests, 10104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:14:57,341 INFO L413 NwaCegarLoop]: 18282 mSDtfsCounter, 19580 mSDsluCounter, 26257 mSDsCounter, 0 mSdLazyCounter, 11320 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19580 SdHoareTripleChecker+Valid, 44539 SdHoareTripleChecker+Invalid, 11934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-25 18:14:57,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19580 Valid, 44539 Invalid, 11934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11320 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-25 18:14:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2023-12-25 18:14:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 7680. [2023-12-25 18:14:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7679 states have (on average 1.6608933454876937) internal successors, (12754), 7679 states have internal predecessors, (12754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 12754 transitions. [2023-12-25 18:14:57,446 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 12754 transitions. Word has length 5057 [2023-12-25 18:14:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:14:57,449 INFO L495 AbstractCegarLoop]: Abstraction has 7680 states and 12754 transitions. [2023-12-25 18:14:57,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 915.2) internal successors, (4576), 5 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:14:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 12754 transitions. [2023-12-25 18:14:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5059 [2023-12-25 18:14:57,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:14:57,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:14:57,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-25 18:14:57,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-25 18:14:57,781 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:14:57,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:14:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 378894316, now seen corresponding path program 1 times [2023-12-25 18:14:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:14:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941639110] [2023-12-25 18:14:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:14:58,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:14:58,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241293096] [2023-12-25 18:14:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:14:58,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:14:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:14:58,201 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:14:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-25 18:15:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:15:04,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 25954 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:15:04,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:15:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 76 proven. 441 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-25 18:15:05,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:15:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-25 18:15:05,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:15:05,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941639110] [2023-12-25 18:15:05,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:15:05,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241293096] [2023-12-25 18:15:05,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241293096] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:15:05,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:15:05,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:15:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793384361] [2023-12-25 18:15:05,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:15:05,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:15:05,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:15:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:15:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:15:05,246 INFO L87 Difference]: Start difference. First operand 7680 states and 12754 transitions. Second operand has 5 states, 5 states have (on average 915.8) internal successors, (4579), 5 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:15:12,962 INFO L93 Difference]: Finished difference Result 26726 states and 44160 transitions. [2023-12-25 18:15:12,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:15:12,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 915.8) internal successors, (4579), 5 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5058 [2023-12-25 18:15:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:15:12,983 INFO L225 Difference]: With dead ends: 26726 [2023-12-25 18:15:12,983 INFO L226 Difference]: Without dead ends: 14128 [2023-12-25 18:15:12,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10115 GetRequests, 10106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:15:12,994 INFO L413 NwaCegarLoop]: 18274 mSDtfsCounter, 19539 mSDsluCounter, 27382 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19539 SdHoareTripleChecker+Valid, 45656 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-25 18:15:12,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19539 Valid, 45656 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-25 18:15:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14128 states. [2023-12-25 18:15:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14128 to 7682. [2023-12-25 18:15:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7682 states, 7681 states have (on average 1.6607212602525714) internal successors, (12756), 7681 states have internal predecessors, (12756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7682 states to 7682 states and 12756 transitions. [2023-12-25 18:15:13,102 INFO L78 Accepts]: Start accepts. Automaton has 7682 states and 12756 transitions. Word has length 5058 [2023-12-25 18:15:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:15:13,105 INFO L495 AbstractCegarLoop]: Abstraction has 7682 states and 12756 transitions. [2023-12-25 18:15:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 915.8) internal successors, (4579), 5 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7682 states and 12756 transitions. [2023-12-25 18:15:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5060 [2023-12-25 18:15:13,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:15:13,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:15:13,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-25 18:15:13,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:15:13,433 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:15:13,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:15:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash 406700158, now seen corresponding path program 1 times [2023-12-25 18:15:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:15:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294262158] [2023-12-25 18:15:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:13,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:15:13,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:15:13,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613444532] [2023-12-25 18:15:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:13,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:15:13,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:15:13,821 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:15:13,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-25 18:15:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:15:19,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 25957 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:15:20,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:15:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 78 proven. 441 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-25 18:15:20,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:15:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-12-25 18:15:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:15:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294262158] [2023-12-25 18:15:20,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:15:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613444532] [2023-12-25 18:15:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613444532] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:15:20,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:15:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:15:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722929478] [2023-12-25 18:15:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:15:20,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:15:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:15:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:15:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:15:20,794 INFO L87 Difference]: Start difference. First operand 7682 states and 12756 transitions. Second operand has 5 states, 5 states have (on average 916.4) internal successors, (4582), 5 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:15:28,225 INFO L93 Difference]: Finished difference Result 26734 states and 44168 transitions. [2023-12-25 18:15:28,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:15:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 916.4) internal successors, (4582), 5 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5059 [2023-12-25 18:15:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:15:28,240 INFO L225 Difference]: With dead ends: 26734 [2023-12-25 18:15:28,240 INFO L226 Difference]: Without dead ends: 14129 [2023-12-25 18:15:28,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10117 GetRequests, 10108 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:15:28,246 INFO L413 NwaCegarLoop]: 18266 mSDtfsCounter, 19570 mSDsluCounter, 26241 mSDsCounter, 0 mSdLazyCounter, 11320 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19570 SdHoareTripleChecker+Valid, 44507 SdHoareTripleChecker+Invalid, 11934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:15:28,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19570 Valid, 44507 Invalid, 11934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11320 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 18:15:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14129 states. [2023-12-25 18:15:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14129 to 7684. [2023-12-25 18:15:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7684 states, 7683 states have (on average 1.6605492646101783) internal successors, (12758), 7683 states have internal predecessors, (12758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 12758 transitions. [2023-12-25 18:15:28,335 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 12758 transitions. Word has length 5059 [2023-12-25 18:15:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:15:28,337 INFO L495 AbstractCegarLoop]: Abstraction has 7684 states and 12758 transitions. [2023-12-25 18:15:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 916.4) internal successors, (4582), 5 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 12758 transitions. [2023-12-25 18:15:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5061 [2023-12-25 18:15:28,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:15:28,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:15:28,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-25 18:15:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-25 18:15:28,664 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:15:28,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:15:28,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1624335344, now seen corresponding path program 1 times [2023-12-25 18:15:28,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:15:28,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192441344] [2023-12-25 18:15:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:28,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:15:29,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:15:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049714082] [2023-12-25 18:15:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:29,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:15:29,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:15:29,117 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:15:29,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-25 18:15:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:15:35,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 25961 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:15:35,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:15:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 80 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-25 18:15:35,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:15:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-25 18:15:35,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:15:35,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192441344] [2023-12-25 18:15:35,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:15:35,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049714082] [2023-12-25 18:15:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049714082] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:15:35,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:15:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:15:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2232639] [2023-12-25 18:15:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:15:35,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:15:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:15:35,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:15:35,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:15:35,868 INFO L87 Difference]: Start difference. First operand 7684 states and 12758 transitions. Second operand has 5 states, 5 states have (on average 917.0) internal successors, (4585), 5 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:15:42,412 INFO L93 Difference]: Finished difference Result 26742 states and 44176 transitions. [2023-12-25 18:15:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:15:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 917.0) internal successors, (4585), 5 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5060 [2023-12-25 18:15:42,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:15:42,429 INFO L225 Difference]: With dead ends: 26742 [2023-12-25 18:15:42,429 INFO L226 Difference]: Without dead ends: 14130 [2023-12-25 18:15:42,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10119 GetRequests, 10110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:15:42,436 INFO L413 NwaCegarLoop]: 18258 mSDtfsCounter, 28369 mSDsluCounter, 18009 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28369 SdHoareTripleChecker+Valid, 36267 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:15:42,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28369 Valid, 36267 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 18:15:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14130 states. [2023-12-25 18:15:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14130 to 7686. [2023-12-25 18:15:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7686 states, 7685 states have (on average 1.6603773584905661) internal successors, (12760), 7685 states have internal predecessors, (12760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 12760 transitions. [2023-12-25 18:15:42,530 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 12760 transitions. Word has length 5060 [2023-12-25 18:15:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:15:42,532 INFO L495 AbstractCegarLoop]: Abstraction has 7686 states and 12760 transitions. [2023-12-25 18:15:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 917.0) internal successors, (4585), 5 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 12760 transitions. [2023-12-25 18:15:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5062 [2023-12-25 18:15:42,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:15:42,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:15:42,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-25 18:15:42,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:15:42,862 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:15:42,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:15:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1883277782, now seen corresponding path program 1 times [2023-12-25 18:15:42,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:15:42,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022873653] [2023-12-25 18:15:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:15:43,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:15:43,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518026358] [2023-12-25 18:15:43,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:43,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:15:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:15:43,249 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:15:43,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-25 18:15:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:15:49,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 25964 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:15:49,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:15:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 82 proven. 441 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-25 18:15:49,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:15:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2023-12-25 18:15:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:15:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022873653] [2023-12-25 18:15:49,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:15:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518026358] [2023-12-25 18:15:49,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518026358] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:15:49,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:15:49,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:15:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781948939] [2023-12-25 18:15:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:15:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:15:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:15:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:15:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:15:49,993 INFO L87 Difference]: Start difference. First operand 7686 states and 12760 transitions. Second operand has 5 states, 5 states have (on average 917.6) internal successors, (4588), 5 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:15:57,645 INFO L93 Difference]: Finished difference Result 26750 states and 44184 transitions. [2023-12-25 18:15:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:15:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 917.6) internal successors, (4588), 5 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5061 [2023-12-25 18:15:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:15:57,665 INFO L225 Difference]: With dead ends: 26750 [2023-12-25 18:15:57,665 INFO L226 Difference]: Without dead ends: 14131 [2023-12-25 18:15:57,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10121 GetRequests, 10112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:15:57,677 INFO L413 NwaCegarLoop]: 18250 mSDtfsCounter, 19521 mSDsluCounter, 27352 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19521 SdHoareTripleChecker+Valid, 45602 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-25 18:15:57,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19521 Valid, 45602 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-25 18:15:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14131 states. [2023-12-25 18:15:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14131 to 7688. [2023-12-25 18:15:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7687 states have (on average 1.6602055418238584) internal successors, (12762), 7687 states have internal predecessors, (12762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 12762 transitions. [2023-12-25 18:15:57,784 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 12762 transitions. Word has length 5061 [2023-12-25 18:15:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:15:57,786 INFO L495 AbstractCegarLoop]: Abstraction has 7688 states and 12762 transitions. [2023-12-25 18:15:57,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 917.6) internal successors, (4588), 5 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:15:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 12762 transitions. [2023-12-25 18:15:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5063 [2023-12-25 18:15:58,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:15:58,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:15:58,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-25 18:15:58,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-25 18:15:58,224 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:15:58,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:15:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1468384502, now seen corresponding path program 1 times [2023-12-25 18:15:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:15:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576791954] [2023-12-25 18:15:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:58,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:15:58,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:15:58,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869473395] [2023-12-25 18:15:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:15:58,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:15:58,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:15:58,595 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:15:58,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-25 18:16:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:16:04,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 25967 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:16:04,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:16:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 84 proven. 441 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-25 18:16:05,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:16:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-12-25 18:16:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:16:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576791954] [2023-12-25 18:16:05,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:16:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869473395] [2023-12-25 18:16:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869473395] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:16:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:16:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:16:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62935361] [2023-12-25 18:16:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:16:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:16:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:16:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:16:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:16:05,662 INFO L87 Difference]: Start difference. First operand 7688 states and 12762 transitions. Second operand has 5 states, 5 states have (on average 918.2) internal successors, (4591), 5 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:16:12,952 INFO L93 Difference]: Finished difference Result 26758 states and 44192 transitions. [2023-12-25 18:16:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:16:12,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 918.2) internal successors, (4591), 5 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5062 [2023-12-25 18:16:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:16:12,972 INFO L225 Difference]: With dead ends: 26758 [2023-12-25 18:16:12,972 INFO L226 Difference]: Without dead ends: 14132 [2023-12-25 18:16:12,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10123 GetRequests, 10114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:16:12,983 INFO L413 NwaCegarLoop]: 18242 mSDtfsCounter, 19515 mSDsluCounter, 27342 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19515 SdHoareTripleChecker+Valid, 45584 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-25 18:16:12,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19515 Valid, 45584 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-25 18:16:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14132 states. [2023-12-25 18:16:13,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14132 to 7690. [2023-12-25 18:16:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7690 states, 7689 states have (on average 1.6600338145402522) internal successors, (12764), 7689 states have internal predecessors, (12764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 12764 transitions. [2023-12-25 18:16:13,087 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 12764 transitions. Word has length 5062 [2023-12-25 18:16:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:16:13,089 INFO L495 AbstractCegarLoop]: Abstraction has 7690 states and 12764 transitions. [2023-12-25 18:16:13,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 918.2) internal successors, (4591), 5 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 12764 transitions. [2023-12-25 18:16:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5064 [2023-12-25 18:16:13,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:16:13,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:16:13,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-25 18:16:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-25 18:16:13,561 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:16:13,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:16:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1825979408, now seen corresponding path program 1 times [2023-12-25 18:16:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:16:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448273242] [2023-12-25 18:16:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:16:13,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:16:13,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195813704] [2023-12-25 18:16:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:13,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:16:13,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:16:13,925 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:16:13,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-25 18:16:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:16:19,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 25970 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:16:19,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:16:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 86 proven. 441 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-25 18:16:20,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:16:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-12-25 18:16:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:16:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448273242] [2023-12-25 18:16:20,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:16:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195813704] [2023-12-25 18:16:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195813704] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:16:20,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:16:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:16:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782591386] [2023-12-25 18:16:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:16:20,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:16:20,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:16:20,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:16:20,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:16:20,583 INFO L87 Difference]: Start difference. First operand 7690 states and 12764 transitions. Second operand has 5 states, 5 states have (on average 918.8) internal successors, (4594), 5 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:16:27,539 INFO L93 Difference]: Finished difference Result 26766 states and 44200 transitions. [2023-12-25 18:16:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:16:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 918.8) internal successors, (4594), 5 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5063 [2023-12-25 18:16:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:16:27,557 INFO L225 Difference]: With dead ends: 26766 [2023-12-25 18:16:27,557 INFO L226 Difference]: Without dead ends: 14133 [2023-12-25 18:16:27,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10125 GetRequests, 10116 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:16:27,569 INFO L413 NwaCegarLoop]: 18234 mSDtfsCounter, 28342 mSDsluCounter, 17994 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28342 SdHoareTripleChecker+Valid, 36228 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-25 18:16:27,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28342 Valid, 36228 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-25 18:16:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14133 states. [2023-12-25 18:16:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14133 to 7692. [2023-12-25 18:16:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7691 states have (on average 1.659862176570017) internal successors, (12766), 7691 states have internal predecessors, (12766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 12766 transitions. [2023-12-25 18:16:27,656 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 12766 transitions. Word has length 5063 [2023-12-25 18:16:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:16:27,658 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 12766 transitions. [2023-12-25 18:16:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 918.8) internal successors, (4594), 5 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 12766 transitions. [2023-12-25 18:16:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5065 [2023-12-25 18:16:27,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:16:27,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:16:28,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-25 18:16:28,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-25 18:16:28,114 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:16:28,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:16:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1739980826, now seen corresponding path program 1 times [2023-12-25 18:16:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:16:28,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762287617] [2023-12-25 18:16:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:28,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:16:28,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:16:28,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781594681] [2023-12-25 18:16:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:28,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:16:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:16:28,467 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:16:28,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-25 18:16:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:16:34,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 25974 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:16:34,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:16:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 88 proven. 441 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-25 18:16:34,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:16:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-25 18:16:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:16:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762287617] [2023-12-25 18:16:35,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:16:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781594681] [2023-12-25 18:16:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781594681] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:16:35,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:16:35,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:16:35,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868763608] [2023-12-25 18:16:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:16:35,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:16:35,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:16:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:16:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:16:35,145 INFO L87 Difference]: Start difference. First operand 7692 states and 12766 transitions. Second operand has 5 states, 5 states have (on average 919.4) internal successors, (4597), 5 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:41,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:16:41,588 INFO L93 Difference]: Finished difference Result 26774 states and 44208 transitions. [2023-12-25 18:16:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:16:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 919.4) internal successors, (4597), 5 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5064 [2023-12-25 18:16:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:16:41,609 INFO L225 Difference]: With dead ends: 26774 [2023-12-25 18:16:41,609 INFO L226 Difference]: Without dead ends: 14134 [2023-12-25 18:16:41,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10127 GetRequests, 10118 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:16:41,621 INFO L413 NwaCegarLoop]: 18226 mSDtfsCounter, 28375 mSDsluCounter, 17988 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28375 SdHoareTripleChecker+Valid, 36214 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:16:41,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28375 Valid, 36214 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 18:16:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14134 states. [2023-12-25 18:16:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14134 to 7694. [2023-12-25 18:16:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7694 states, 7693 states have (on average 1.6596906278434942) internal successors, (12768), 7693 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7694 states to 7694 states and 12768 transitions. [2023-12-25 18:16:41,723 INFO L78 Accepts]: Start accepts. Automaton has 7694 states and 12768 transitions. Word has length 5064 [2023-12-25 18:16:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:16:41,726 INFO L495 AbstractCegarLoop]: Abstraction has 7694 states and 12768 transitions. [2023-12-25 18:16:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 919.4) internal successors, (4597), 5 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7694 states and 12768 transitions. [2023-12-25 18:16:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5066 [2023-12-25 18:16:41,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:16:41,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:16:42,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-25 18:16:42,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-25 18:16:42,195 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:16:42,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:16:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -543769528, now seen corresponding path program 1 times [2023-12-25 18:16:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:16:42,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928752367] [2023-12-25 18:16:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:16:42,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:16:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733985556] [2023-12-25 18:16:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:42,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:16:42,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:16:42,563 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:16:42,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-25 18:16:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:16:48,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 25977 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:16:48,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:16:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 90 proven. 441 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 18:16:49,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:16:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-12-25 18:16:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:16:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928752367] [2023-12-25 18:16:49,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:16:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733985556] [2023-12-25 18:16:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733985556] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:16:49,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:16:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:16:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007684383] [2023-12-25 18:16:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:16:49,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:16:49,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:16:49,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:16:49,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:16:49,400 INFO L87 Difference]: Start difference. First operand 7694 states and 12768 transitions. Second operand has 5 states, 5 states have (on average 920.0) internal successors, (4600), 5 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:16:56,978 INFO L93 Difference]: Finished difference Result 26782 states and 44216 transitions. [2023-12-25 18:16:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:16:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 920.0) internal successors, (4600), 5 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5065 [2023-12-25 18:16:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:16:56,996 INFO L225 Difference]: With dead ends: 26782 [2023-12-25 18:16:56,996 INFO L226 Difference]: Without dead ends: 14135 [2023-12-25 18:16:57,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10129 GetRequests, 10120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:16:57,007 INFO L413 NwaCegarLoop]: 18218 mSDtfsCounter, 19540 mSDsluCounter, 26193 mSDsCounter, 0 mSdLazyCounter, 11320 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19540 SdHoareTripleChecker+Valid, 44411 SdHoareTripleChecker+Invalid, 11934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 18:16:57,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19540 Valid, 44411 Invalid, 11934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11320 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 18:16:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2023-12-25 18:16:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 7696. [2023-12-25 18:16:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7696 states, 7695 states have (on average 1.6595191682910981) internal successors, (12770), 7695 states have internal predecessors, (12770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7696 states to 7696 states and 12770 transitions. [2023-12-25 18:16:57,112 INFO L78 Accepts]: Start accepts. Automaton has 7696 states and 12770 transitions. Word has length 5065 [2023-12-25 18:16:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:16:57,115 INFO L495 AbstractCegarLoop]: Abstraction has 7696 states and 12770 transitions. [2023-12-25 18:16:57,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 920.0) internal successors, (4600), 5 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:16:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 7696 states and 12770 transitions. [2023-12-25 18:16:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5067 [2023-12-25 18:16:57,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:16:57,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:16:57,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-25 18:16:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-25 18:16:57,444 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:16:57,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:16:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1454501120, now seen corresponding path program 1 times [2023-12-25 18:16:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:16:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594536273] [2023-12-25 18:16:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:16:57,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:16:57,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207937678] [2023-12-25 18:16:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:16:57,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:16:57,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:16:57,816 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:16:57,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-25 18:17:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:17:03,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 25980 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:17:03,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:17:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 92 proven. 441 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-25 18:17:04,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:17:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-12-25 18:17:04,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:17:04,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594536273] [2023-12-25 18:17:04,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:17:04,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207937678] [2023-12-25 18:17:04,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207937678] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:17:04,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:17:04,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:17:04,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428224842] [2023-12-25 18:17:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:17:04,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:17:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:17:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:17:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:17:04,616 INFO L87 Difference]: Start difference. First operand 7696 states and 12770 transitions. Second operand has 5 states, 5 states have (on average 920.6) internal successors, (4603), 5 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:11,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:17:11,150 INFO L93 Difference]: Finished difference Result 26790 states and 44224 transitions. [2023-12-25 18:17:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:17:11,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 920.6) internal successors, (4603), 5 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5066 [2023-12-25 18:17:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:17:11,170 INFO L225 Difference]: With dead ends: 26790 [2023-12-25 18:17:11,170 INFO L226 Difference]: Without dead ends: 14136 [2023-12-25 18:17:11,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10131 GetRequests, 10122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:17:11,182 INFO L413 NwaCegarLoop]: 18210 mSDtfsCounter, 28315 mSDsluCounter, 17979 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28315 SdHoareTripleChecker+Valid, 36189 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 18:17:11,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28315 Valid, 36189 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 18:17:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14136 states. [2023-12-25 18:17:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14136 to 7698. [2023-12-25 18:17:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7698 states, 7697 states have (on average 1.6593477978433155) internal successors, (12772), 7697 states have internal predecessors, (12772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7698 states to 7698 states and 12772 transitions. [2023-12-25 18:17:11,287 INFO L78 Accepts]: Start accepts. Automaton has 7698 states and 12772 transitions. Word has length 5066 [2023-12-25 18:17:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:17:11,289 INFO L495 AbstractCegarLoop]: Abstraction has 7698 states and 12772 transitions. [2023-12-25 18:17:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 920.6) internal successors, (4603), 5 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7698 states and 12772 transitions. [2023-12-25 18:17:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5068 [2023-12-25 18:17:11,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:17:11,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:17:11,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-25 18:17:11,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:17:11,618 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:17:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:17:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1685869154, now seen corresponding path program 1 times [2023-12-25 18:17:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:17:11,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834424717] [2023-12-25 18:17:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:17:11,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:17:11,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105670838] [2023-12-25 18:17:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:17:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:17:11,984 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:17:11,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-25 18:17:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:17:17,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 25983 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:17:18,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:17:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 94 proven. 441 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 18:17:18,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:17:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-25 18:17:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:17:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834424717] [2023-12-25 18:17:18,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:17:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105670838] [2023-12-25 18:17:18,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105670838] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:17:18,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:17:18,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:17:18,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745597659] [2023-12-25 18:17:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:17:18,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:17:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:17:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:17:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:17:18,745 INFO L87 Difference]: Start difference. First operand 7698 states and 12772 transitions. Second operand has 5 states, 5 states have (on average 921.2) internal successors, (4606), 5 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:17:26,329 INFO L93 Difference]: Finished difference Result 26798 states and 44232 transitions. [2023-12-25 18:17:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:17:26,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 921.2) internal successors, (4606), 5 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5067 [2023-12-25 18:17:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:17:26,350 INFO L225 Difference]: With dead ends: 26798 [2023-12-25 18:17:26,350 INFO L226 Difference]: Without dead ends: 14137 [2023-12-25 18:17:26,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10133 GetRequests, 10124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:17:26,363 INFO L413 NwaCegarLoop]: 18202 mSDtfsCounter, 19530 mSDsluCounter, 26177 mSDsCounter, 0 mSdLazyCounter, 11320 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19530 SdHoareTripleChecker+Valid, 44379 SdHoareTripleChecker+Invalid, 11934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-25 18:17:26,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19530 Valid, 44379 Invalid, 11934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11320 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-25 18:17:26,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14137 states. [2023-12-25 18:17:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14137 to 7700. [2023-12-25 18:17:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7700 states, 7699 states have (on average 1.6591765164307053) internal successors, (12774), 7699 states have internal predecessors, (12774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7700 states to 7700 states and 12774 transitions. [2023-12-25 18:17:26,481 INFO L78 Accepts]: Start accepts. Automaton has 7700 states and 12774 transitions. Word has length 5067 [2023-12-25 18:17:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:17:26,484 INFO L495 AbstractCegarLoop]: Abstraction has 7700 states and 12774 transitions. [2023-12-25 18:17:26,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 921.2) internal successors, (4606), 5 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 7700 states and 12774 transitions. [2023-12-25 18:17:26,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5069 [2023-12-25 18:17:26,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:17:26,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:17:26,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-25 18:17:26,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-25 18:17:26,819 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:17:26,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:17:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1548730588, now seen corresponding path program 1 times [2023-12-25 18:17:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:17:26,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293258699] [2023-12-25 18:17:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:26,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:17:27,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:17:27,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88417879] [2023-12-25 18:17:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:27,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:17:27,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:17:27,220 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:17:27,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-25 18:17:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:17:33,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 25987 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:17:33,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:17:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 96 proven. 441 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-25 18:17:34,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:17:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-12-25 18:17:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:17:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293258699] [2023-12-25 18:17:34,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:17:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88417879] [2023-12-25 18:17:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88417879] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:17:34,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:17:34,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:17:34,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114462745] [2023-12-25 18:17:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:17:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:17:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:17:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:17:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:17:34,711 INFO L87 Difference]: Start difference. First operand 7700 states and 12774 transitions. Second operand has 5 states, 5 states have (on average 921.8) internal successors, (4609), 5 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:17:41,997 INFO L93 Difference]: Finished difference Result 26806 states and 44240 transitions. [2023-12-25 18:17:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:17:41,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 921.8) internal successors, (4609), 5 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5068 [2023-12-25 18:17:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:17:42,019 INFO L225 Difference]: With dead ends: 26806 [2023-12-25 18:17:42,020 INFO L226 Difference]: Without dead ends: 14138 [2023-12-25 18:17:42,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10135 GetRequests, 10126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:17:42,031 INFO L413 NwaCegarLoop]: 18194 mSDtfsCounter, 28343 mSDsluCounter, 17968 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28343 SdHoareTripleChecker+Valid, 36162 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 18:17:42,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28343 Valid, 36162 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 18:17:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14138 states. [2023-12-25 18:17:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14138 to 7702. [2023-12-25 18:17:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7702 states, 7701 states have (on average 1.6590053239838982) internal successors, (12776), 7701 states have internal predecessors, (12776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7702 states to 7702 states and 12776 transitions. [2023-12-25 18:17:42,151 INFO L78 Accepts]: Start accepts. Automaton has 7702 states and 12776 transitions. Word has length 5068 [2023-12-25 18:17:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:17:42,153 INFO L495 AbstractCegarLoop]: Abstraction has 7702 states and 12776 transitions. [2023-12-25 18:17:42,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 921.8) internal successors, (4609), 5 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7702 states and 12776 transitions. [2023-12-25 18:17:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5070 [2023-12-25 18:17:42,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:17:42,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:17:42,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-25 18:17:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:17:42,488 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:17:42,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:17:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 244545978, now seen corresponding path program 1 times [2023-12-25 18:17:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:17:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885610190] [2023-12-25 18:17:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:17:42,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:17:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790200810] [2023-12-25 18:17:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:42,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:17:42,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:17:42,907 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:17:42,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-25 18:17:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:17:49,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 25990 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:17:49,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:17:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 98 proven. 441 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-25 18:17:50,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:17:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-25 18:17:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:17:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885610190] [2023-12-25 18:17:50,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:17:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790200810] [2023-12-25 18:17:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790200810] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:17:50,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:17:50,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:17:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803742363] [2023-12-25 18:17:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:17:50,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:17:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:17:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:17:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:17:50,422 INFO L87 Difference]: Start difference. First operand 7702 states and 12776 transitions. Second operand has 5 states, 5 states have (on average 922.4) internal successors, (4612), 5 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:17:58,802 INFO L93 Difference]: Finished difference Result 26814 states and 44248 transitions. [2023-12-25 18:17:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:17:58,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 922.4) internal successors, (4612), 5 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5069 [2023-12-25 18:17:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:17:58,825 INFO L225 Difference]: With dead ends: 26814 [2023-12-25 18:17:58,826 INFO L226 Difference]: Without dead ends: 14139 [2023-12-25 18:17:58,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10137 GetRequests, 10128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:17:58,839 INFO L413 NwaCegarLoop]: 18186 mSDtfsCounter, 19473 mSDsluCounter, 27272 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19473 SdHoareTripleChecker+Valid, 45458 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-25 18:17:58,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19473 Valid, 45458 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-25 18:17:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14139 states. [2023-12-25 18:17:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14139 to 7704. [2023-12-25 18:17:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7704 states, 7703 states have (on average 1.6588342204335973) internal successors, (12778), 7703 states have internal predecessors, (12778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 12778 transitions. [2023-12-25 18:17:58,967 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 12778 transitions. Word has length 5069 [2023-12-25 18:17:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:17:58,970 INFO L495 AbstractCegarLoop]: Abstraction has 7704 states and 12778 transitions. [2023-12-25 18:17:58,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 922.4) internal successors, (4612), 5 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:17:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 12778 transitions. [2023-12-25 18:17:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5071 [2023-12-25 18:17:59,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:17:59,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:17:59,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-25 18:17:59,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-12-25 18:17:59,305 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:17:59,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:17:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash -603164662, now seen corresponding path program 1 times [2023-12-25 18:17:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:17:59,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014719529] [2023-12-25 18:17:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:17:59,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:17:59,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994283169] [2023-12-25 18:17:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:17:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:17:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:17:59,771 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:17:59,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-25 18:18:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:18:06,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 25993 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:18:06,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:18:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 100 proven. 441 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-25 18:18:06,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:18:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-25 18:18:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:18:07,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014719529] [2023-12-25 18:18:07,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:18:07,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994283169] [2023-12-25 18:18:07,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994283169] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:18:07,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:18:07,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:18:07,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901303353] [2023-12-25 18:18:07,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:18:07,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:18:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:18:07,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:18:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:18:07,142 INFO L87 Difference]: Start difference. First operand 7704 states and 12778 transitions. Second operand has 5 states, 5 states have (on average 923.0) internal successors, (4615), 5 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:18:15,288 INFO L93 Difference]: Finished difference Result 26822 states and 44256 transitions. [2023-12-25 18:18:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:18:15,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 923.0) internal successors, (4615), 5 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5070 [2023-12-25 18:18:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:18:15,312 INFO L225 Difference]: With dead ends: 26822 [2023-12-25 18:18:15,312 INFO L226 Difference]: Without dead ends: 14140 [2023-12-25 18:18:15,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10139 GetRequests, 10130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:18:15,324 INFO L413 NwaCegarLoop]: 18178 mSDtfsCounter, 19515 mSDsluCounter, 26153 mSDsCounter, 0 mSdLazyCounter, 11320 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19515 SdHoareTripleChecker+Valid, 44331 SdHoareTripleChecker+Invalid, 11934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-25 18:18:15,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19515 Valid, 44331 Invalid, 11934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11320 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-25 18:18:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14140 states. [2023-12-25 18:18:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14140 to 7706. [2023-12-25 18:18:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7706 states, 7705 states have (on average 1.6586632057105775) internal successors, (12780), 7705 states have internal predecessors, (12780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7706 states to 7706 states and 12780 transitions. [2023-12-25 18:18:15,452 INFO L78 Accepts]: Start accepts. Automaton has 7706 states and 12780 transitions. Word has length 5070 [2023-12-25 18:18:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:18:15,454 INFO L495 AbstractCegarLoop]: Abstraction has 7706 states and 12780 transitions. [2023-12-25 18:18:15,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 923.0) internal successors, (4615), 5 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7706 states and 12780 transitions. [2023-12-25 18:18:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5072 [2023-12-25 18:18:15,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:18:15,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:18:15,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-25 18:18:15,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:18:15,790 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:18:15,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:18:15,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1379527636, now seen corresponding path program 1 times [2023-12-25 18:18:15,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:18:15,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875021259] [2023-12-25 18:18:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:18:15,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:18:16,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:18:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674538050] [2023-12-25 18:18:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:18:16,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:18:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:18:16,248 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:18:16,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-25 18:18:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:18:22,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 25996 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:18:22,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:18:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 102 proven. 441 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 18:18:23,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:18:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-12-25 18:18:23,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:18:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875021259] [2023-12-25 18:18:23,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:18:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674538050] [2023-12-25 18:18:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674538050] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:18:23,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:18:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:18:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761029380] [2023-12-25 18:18:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:18:23,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:18:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:18:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:18:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:18:23,604 INFO L87 Difference]: Start difference. First operand 7706 states and 12780 transitions. Second operand has 5 states, 5 states have (on average 923.6) internal successors, (4618), 5 states have internal predecessors, (4618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:18:30,904 INFO L93 Difference]: Finished difference Result 26830 states and 44264 transitions. [2023-12-25 18:18:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:18:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 923.6) internal successors, (4618), 5 states have internal predecessors, (4618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5071 [2023-12-25 18:18:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:18:30,926 INFO L225 Difference]: With dead ends: 26830 [2023-12-25 18:18:30,926 INFO L226 Difference]: Without dead ends: 14141 [2023-12-25 18:18:30,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10141 GetRequests, 10132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:18:30,938 INFO L413 NwaCegarLoop]: 18170 mSDtfsCounter, 28270 mSDsluCounter, 17954 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28270 SdHoareTripleChecker+Valid, 36124 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-25 18:18:30,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28270 Valid, 36124 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-25 18:18:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2023-12-25 18:18:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 7708. [2023-12-25 18:18:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 7707 states have (on average 1.6584922797456858) internal successors, (12782), 7707 states have internal predecessors, (12782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 12782 transitions. [2023-12-25 18:18:31,061 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 12782 transitions. Word has length 5071 [2023-12-25 18:18:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:18:31,064 INFO L495 AbstractCegarLoop]: Abstraction has 7708 states and 12782 transitions. [2023-12-25 18:18:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 923.6) internal successors, (4618), 5 states have internal predecessors, (4618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 12782 transitions. [2023-12-25 18:18:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5073 [2023-12-25 18:18:31,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:18:31,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:18:31,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-25 18:18:31,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:18:31,399 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:18:31,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:18:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash 332388654, now seen corresponding path program 1 times [2023-12-25 18:18:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:18:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919543100] [2023-12-25 18:18:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:18:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:18:31,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:18:31,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158697577] [2023-12-25 18:18:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:18:31,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:18:31,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:18:31,806 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:18:31,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-25 18:18:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:18:38,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 26000 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:18:38,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:18:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 104 proven. 441 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 18:18:39,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:18:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-12-25 18:18:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:18:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919543100] [2023-12-25 18:18:39,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:18:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158697577] [2023-12-25 18:18:39,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158697577] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:18:39,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:18:39,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:18:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209721686] [2023-12-25 18:18:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:18:39,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:18:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:18:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:18:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:18:39,302 INFO L87 Difference]: Start difference. First operand 7708 states and 12782 transitions. Second operand has 5 states, 5 states have (on average 924.2) internal successors, (4621), 5 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:47,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:18:47,680 INFO L93 Difference]: Finished difference Result 26838 states and 44272 transitions. [2023-12-25 18:18:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:18:47,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 924.2) internal successors, (4621), 5 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5072 [2023-12-25 18:18:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:18:47,703 INFO L225 Difference]: With dead ends: 26838 [2023-12-25 18:18:47,703 INFO L226 Difference]: Without dead ends: 14142 [2023-12-25 18:18:47,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10143 GetRequests, 10134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:18:47,717 INFO L413 NwaCegarLoop]: 18162 mSDtfsCounter, 19455 mSDsluCounter, 27242 mSDsCounter, 0 mSdLazyCounter, 11996 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19455 SdHoareTripleChecker+Valid, 45404 SdHoareTripleChecker+Invalid, 12610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 11996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-25 18:18:47,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19455 Valid, 45404 Invalid, 12610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 11996 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-25 18:18:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14142 states. [2023-12-25 18:18:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14142 to 7710. [2023-12-25 18:18:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7710 states, 7709 states have (on average 1.6583214424698405) internal successors, (12784), 7709 states have internal predecessors, (12784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 12784 transitions. [2023-12-25 18:18:47,859 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 12784 transitions. Word has length 5072 [2023-12-25 18:18:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:18:47,861 INFO L495 AbstractCegarLoop]: Abstraction has 7710 states and 12784 transitions. [2023-12-25 18:18:47,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 924.2) internal successors, (4621), 5 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:18:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 12784 transitions. [2023-12-25 18:18:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5074 [2023-12-25 18:18:47,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:18:47,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:18:48,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-25 18:18:48,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-12-25 18:18:48,197 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:18:48,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:18:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash 939213356, now seen corresponding path program 1 times [2023-12-25 18:18:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:18:48,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078392014] [2023-12-25 18:18:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:18:48,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:18:48,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:18:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126284979] [2023-12-25 18:18:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:18:48,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:18:48,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:18:48,611 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:18:48,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-25 18:18:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:18:55,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 26003 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:18:55,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:18:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 106 proven. 441 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 18:18:56,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 18:18:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-25 18:18:56,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 18:18:56,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078392014] [2023-12-25 18:18:56,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 18:18:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126284979] [2023-12-25 18:18:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126284979] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 18:18:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 18:18:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 18:18:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886595763] [2023-12-25 18:18:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 18:18:56,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 18:18:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 18:18:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 18:18:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 18:18:56,286 INFO L87 Difference]: Start difference. First operand 7710 states and 12784 transitions. Second operand has 5 states, 5 states have (on average 924.8) internal successors, (4624), 5 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:19:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 18:19:03,617 INFO L93 Difference]: Finished difference Result 26846 states and 44280 transitions. [2023-12-25 18:19:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 18:19:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 924.8) internal successors, (4624), 5 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5073 [2023-12-25 18:19:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 18:19:03,638 INFO L225 Difference]: With dead ends: 26846 [2023-12-25 18:19:03,639 INFO L226 Difference]: Without dead ends: 14143 [2023-12-25 18:19:03,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10145 GetRequests, 10136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 18:19:03,649 INFO L413 NwaCegarLoop]: 18154 mSDtfsCounter, 28303 mSDsluCounter, 17943 mSDsCounter, 0 mSdLazyCounter, 8860 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28303 SdHoareTripleChecker+Valid, 36097 SdHoareTripleChecker+Invalid, 9474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-25 18:19:03,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28303 Valid, 36097 Invalid, 9474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8860 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-25 18:19:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14143 states. [2023-12-25 18:19:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14143 to 7712. [2023-12-25 18:19:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7712 states, 7711 states have (on average 1.6581506938140318) internal successors, (12786), 7711 states have internal predecessors, (12786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:19:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 12786 transitions. [2023-12-25 18:19:03,768 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 12786 transitions. Word has length 5073 [2023-12-25 18:19:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 18:19:03,771 INFO L495 AbstractCegarLoop]: Abstraction has 7712 states and 12786 transitions. [2023-12-25 18:19:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 924.8) internal successors, (4624), 5 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 18:19:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 12786 transitions. [2023-12-25 18:19:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5075 [2023-12-25 18:19:03,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 18:19:03,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:19:04,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-25 18:19:04,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-25 18:19:04,121 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 18:19:04,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 18:19:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash 776457748, now seen corresponding path program 1 times [2023-12-25 18:19:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 18:19:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338398619] [2023-12-25 18:19:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:19:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 18:19:04,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 18:19:04,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857785979] [2023-12-25 18:19:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 18:19:04,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 18:19:04,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 18:19:04,550 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 18:19:04,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process Received shutdown request... [2023-12-25 18:19:10,512 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 18:19:10,536 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 [2023-12-25 18:19:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 18:19:11,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 26006 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 18:19:11,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 18:19:11,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 18:19:11,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-12-25 18:19:11,736 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-25 18:19:11,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-25 18:19:11,740 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 5075 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-25 18:19:11,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 18:19:11,746 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 18:19:11,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:19:11 BoogieIcfgContainer [2023-12-25 18:19:11,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 18:19:11,748 INFO L158 Benchmark]: Toolchain (without parser) took 783611.74ms. Allocated memory was 316.7MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 254.3MB in the beginning and 962.9MB in the end (delta: -708.6MB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2023-12-25 18:19:11,748 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 222.3MB. Free memory is still 175.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 18:19:11,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1774.49ms. Allocated memory was 316.7MB in the beginning and 545.3MB in the end (delta: 228.6MB). Free memory was 254.0MB in the beginning and 372.6MB in the end (delta: -118.5MB). Peak memory consumption was 166.5MB. Max. memory is 8.0GB. [2023-12-25 18:19:11,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 2503.77ms. Allocated memory was 545.3MB in the beginning and 2.9GB in the end (delta: 2.3GB). Free memory was 372.6MB in the beginning and 2.3GB in the end (delta: -1.9GB). Peak memory consumption was 387.4MB. Max. memory is 8.0GB. [2023-12-25 18:19:11,748 INFO L158 Benchmark]: Boogie Preprocessor took 3398.09ms. Allocated memory is still 2.9GB. Free memory was 2.3GB in the beginning and 2.2GB in the end (delta: 126.4MB). Peak memory consumption was 245.9MB. Max. memory is 8.0GB. [2023-12-25 18:19:11,748 INFO L158 Benchmark]: RCFGBuilder took 14220.90ms. Allocated memory was 2.9GB in the beginning and 4.9GB in the end (delta: 2.1GB). Free memory was 2.2GB in the beginning and 3.9GB in the end (delta: -1.7GB). Peak memory consumption was 443.8MB. Max. memory is 8.0GB. [2023-12-25 18:19:11,748 INFO L158 Benchmark]: TraceAbstraction took 761706.72ms. Allocated memory is still 4.9GB. Free memory was 3.9GB in the beginning and 962.9MB in the end (delta: 2.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-25 18:19:11,749 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 222.3MB. Free memory is still 175.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1774.49ms. Allocated memory was 316.7MB in the beginning and 545.3MB in the end (delta: 228.6MB). Free memory was 254.0MB in the beginning and 372.6MB in the end (delta: -118.5MB). Peak memory consumption was 166.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 2503.77ms. Allocated memory was 545.3MB in the beginning and 2.9GB in the end (delta: 2.3GB). Free memory was 372.6MB in the beginning and 2.3GB in the end (delta: -1.9GB). Peak memory consumption was 387.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 3398.09ms. Allocated memory is still 2.9GB. Free memory was 2.3GB in the beginning and 2.2GB in the end (delta: 126.4MB). Peak memory consumption was 245.9MB. Max. memory is 8.0GB. * RCFGBuilder took 14220.90ms. Allocated memory was 2.9GB in the beginning and 4.9GB in the end (delta: 2.1GB). Free memory was 2.2GB in the beginning and 3.9GB in the end (delta: -1.7GB). Peak memory consumption was 443.8MB. Max. memory is 8.0GB. * TraceAbstraction took 761706.72ms. Allocated memory is still 4.9GB. Free memory was 3.9GB in the beginning and 962.9MB in the end (delta: 2.9GB). Peak memory consumption was 2.9GB. 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 5075 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6778 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 761.7s, OverallIterations: 59, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 7.6s, AutomataDifference: 346.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1296624 SdHoareTripleChecker+Valid, 321.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1296624 mSDsluCounter, 2304120 SdHoareTripleChecker+Invalid, 263.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1322856 mSDsCounter, 27640 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462407 IncrementalHoareTripleChecker+Invalid, 490047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27640 mSolverCounterUnsat, 981264 mSDtfsCounter, 462407 mSolverCounterSat, 5.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 474712 GetRequests, 474263 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7712occurred in iteration=58, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 58 MinimizatonAttempts, 348987 StatesRemovedByMinimization, 57 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 79.8s SsaConstructionTime, 183.7s SatisfiabilityAnalysisTime, 57.9s InterpolantComputationTime, 254251 NumberOfCodeBlocks, 254251 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 481443 ConstructedInterpolants, 0 QuantifiedInterpolants, 557494 SizeOfPredicates, 186 NumberOfNonLiveVariables, 1270342 ConjunctsInSsa, 793 ConjunctsInUnsatCore, 103 InterpolantComputations, 58 PerfectInterpolantSequences, 32419/52264 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