/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.driving_phils.3.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 17:44:03,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 17:44:03,677 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 17:44:03,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 17:44:03,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 17:44:03,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 17:44:03,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 17:44:03,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 17:44:03,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 17:44:03,707 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 17:44:03,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 17:44:03,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 17:44:03,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 17:44:03,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 17:44:03,709 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 17:44:03,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 17:44:03,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 17:44:03,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 17:44:03,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 17:44:03,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 17:44:03,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 17:44:03,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 17:44:03,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 17:44:03,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 17:44:03,711 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 17:44:03,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 17:44:03,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 17:44:03,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 17:44:03,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 17:44:03,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:44:03,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 17:44:03,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 17:44:03,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 17:44:03,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 17:44:03,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 17:44:03,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 17:44:03,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 17:44:03,902 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 17:44:03,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.driving_phils.3.prop1-back-serstep.c [2023-12-25 17:44:04,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 17:44:05,194 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 17:44:05,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.driving_phils.3.prop1-back-serstep.c [2023-12-25 17:44:05,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6d5c05e/909bec1ac51b43ba95adc6e459f13d07/FLAG264c1c7a9 [2023-12-25 17:44:05,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6d5c05e/909bec1ac51b43ba95adc6e459f13d07 [2023-12-25 17:44:05,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 17:44:05,234 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 17:44:05,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 17:44:05,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 17:44:05,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 17:44:05,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:44:05" (1/1) ... [2023-12-25 17:44:05,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4e3311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:05, skipping insertion in model container [2023-12-25 17:44:05,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:44:05" (1/1) ... [2023-12-25 17:44:05,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 17:44:05,509 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.driving_phils.3.prop1-back-serstep.c[1181,1194] [2023-12-25 17:44:06,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:44:06,015 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 17:44:06,023 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.driving_phils.3.prop1-back-serstep.c[1181,1194] [2023-12-25 17:44:06,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:44:06,277 INFO L206 MainTranslator]: Completed translation [2023-12-25 17:44:06,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06 WrapperNode [2023-12-25 17:44:06,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 17:44:06,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 17:44:06,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 17:44:06,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 17:44:06,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:06,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:07,491 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18686 [2023-12-25 17:44:07,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 17:44:07,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 17:44:07,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 17:44:07,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 17:44:07,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:07,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:07,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,135 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 17:44:08,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:08,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 17:44:08,998 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 17:44:08,998 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 17:44:08,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 17:44:08,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (1/1) ... [2023-12-25 17:44:09,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:44:09,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:44:09,018 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 17:44:09,046 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 17:44:09,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 17:44:09,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 17:44:09,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 17:44:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 17:44:09,740 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 17:44:09,741 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 17:44:16,913 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 17:44:17,137 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 17:44:17,137 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 17:44:17,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:44:17 BoogieIcfgContainer [2023-12-25 17:44:17,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 17:44:17,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 17:44:17,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 17:44:17,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 17:44:17,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:44:05" (1/3) ... [2023-12-25 17:44:17,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736db587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:44:17, skipping insertion in model container [2023-12-25 17:44:17,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:44:06" (2/3) ... [2023-12-25 17:44:17,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736db587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:44:17, skipping insertion in model container [2023-12-25 17:44:17,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:44:17" (3/3) ... [2023-12-25 17:44:17,145 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.driving_phils.3.prop1-back-serstep.c [2023-12-25 17:44:17,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 17:44:17,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 17:44:17,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 17:44:17,252 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;@70718991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 17:44:17,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 17:44:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 4597 states, 4595 states have (on average 1.676822633297062) internal successors, (7705), 4596 states have internal predecessors, (7705), 0 states have call successors, (0), 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 17:44:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-25 17:44:17,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:17,294 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] [2023-12-25 17:44:17,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:17,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2066252456, now seen corresponding path program 1 times [2023-12-25 17:44:17,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:17,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36323125] [2023-12-25 17:44:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:17,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:18,923 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 17:44:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36323125] [2023-12-25 17:44:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36323125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645100983] [2023-12-25 17:44:18,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:18,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:18,965 INFO L87 Difference]: Start difference. First operand has 4597 states, 4595 states have (on average 1.676822633297062) internal successors, (7705), 4596 states have internal predecessors, (7705), 0 states have call successors, (0), 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 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 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 17:44:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:21,694 INFO L93 Difference]: Finished difference Result 13521 states and 22671 transitions. [2023-12-25 17:44:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:21,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2023-12-25 17:44:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:21,751 INFO L225 Difference]: With dead ends: 13521 [2023-12-25 17:44:21,751 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:21,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:21,771 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22398 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22398 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:21,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22398 Valid, 19904 Invalid, 3199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 17:44:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4856. [2023-12-25 17:44:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4855 states have (on average 1.6753861997940267) internal successors, (8134), 4855 states have internal predecessors, (8134), 0 states have call successors, (0), 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 17:44:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 8134 transitions. [2023-12-25 17:44:22,183 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 8134 transitions. Word has length 378 [2023-12-25 17:44:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:22,186 INFO L495 AbstractCegarLoop]: Abstraction has 4856 states and 8134 transitions. [2023-12-25 17:44:22,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 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 17:44:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 8134 transitions. [2023-12-25 17:44:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-25 17:44:22,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:22,192 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] [2023-12-25 17:44:22,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 17:44:22,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:22,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash -64647106, now seen corresponding path program 1 times [2023-12-25 17:44:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202163009] [2023-12-25 17:44:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:22,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:23,057 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 17:44:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202163009] [2023-12-25 17:44:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202163009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:23,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679339563] [2023-12-25 17:44:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:23,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:23,066 INFO L87 Difference]: Start difference. First operand 4856 states and 8134 transitions. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 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 17:44:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:24,951 INFO L93 Difference]: Finished difference Result 13643 states and 22844 transitions. [2023-12-25 17:44:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:24,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2023-12-25 17:44:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:24,975 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:24,975 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:24,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:24,983 INFO L413 NwaCegarLoop]: 6907 mSDtfsCounter, 29680 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29680 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:24,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29680 Valid, 21479 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 17:44:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4861. [2023-12-25 17:44:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4861 states, 4860 states have (on average 1.6751028806584363) internal successors, (8141), 4860 states have internal predecessors, (8141), 0 states have call successors, (0), 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 17:44:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 8141 transitions. [2023-12-25 17:44:25,075 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 8141 transitions. Word has length 379 [2023-12-25 17:44:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:25,075 INFO L495 AbstractCegarLoop]: Abstraction has 4861 states and 8141 transitions. [2023-12-25 17:44:25,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 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 17:44:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 8141 transitions. [2023-12-25 17:44:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-25 17:44:25,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:25,079 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] [2023-12-25 17:44:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 17:44:25,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:25,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2057089758, now seen corresponding path program 1 times [2023-12-25 17:44:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241448608] [2023-12-25 17:44:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:25,913 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 17:44:25,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:25,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241448608] [2023-12-25 17:44:25,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241448608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:25,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:25,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003370599] [2023-12-25 17:44:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:25,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:25,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:25,918 INFO L87 Difference]: Start difference. First operand 4861 states and 8141 transitions. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 17:44:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:28,291 INFO L93 Difference]: Finished difference Result 13519 states and 22658 transitions. [2023-12-25 17:44:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2023-12-25 17:44:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:28,327 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:44:28,328 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:28,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:28,339 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22388 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22388 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:28,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22388 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:44:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:28,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4862. [2023-12-25 17:44:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4862 states, 4861 states have (on average 1.6749639991771241) internal successors, (8142), 4861 states have internal predecessors, (8142), 0 states have call successors, (0), 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 17:44:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4862 states to 4862 states and 8142 transitions. [2023-12-25 17:44:28,433 INFO L78 Accepts]: Start accepts. Automaton has 4862 states and 8142 transitions. Word has length 380 [2023-12-25 17:44:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:28,433 INFO L495 AbstractCegarLoop]: Abstraction has 4862 states and 8142 transitions. [2023-12-25 17:44:28,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 17:44:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4862 states and 8142 transitions. [2023-12-25 17:44:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-25 17:44:28,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:28,444 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] [2023-12-25 17:44:28,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 17:44:28,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:28,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1766521188, now seen corresponding path program 1 times [2023-12-25 17:44:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:28,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433397223] [2023-12-25 17:44:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:28,960 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 17:44:28,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:28,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433397223] [2023-12-25 17:44:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433397223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259329341] [2023-12-25 17:44:28,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:28,963 INFO L87 Difference]: Start difference. First operand 4862 states and 8142 transitions. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 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 17:44:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:30,738 INFO L93 Difference]: Finished difference Result 13643 states and 22842 transitions. [2023-12-25 17:44:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:30,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2023-12-25 17:44:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:30,778 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:30,778 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:30,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:30,792 INFO L413 NwaCegarLoop]: 6909 mSDtfsCounter, 29664 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29664 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:30,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29664 Valid, 21481 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 17:44:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4867. [2023-12-25 17:44:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4866 states have (on average 1.674681463214139) internal successors, (8149), 4866 states have internal predecessors, (8149), 0 states have call successors, (0), 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 17:44:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 8149 transitions. [2023-12-25 17:44:30,918 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 8149 transitions. Word has length 380 [2023-12-25 17:44:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:30,918 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 8149 transitions. [2023-12-25 17:44:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 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 17:44:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 8149 transitions. [2023-12-25 17:44:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-25 17:44:30,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:30,921 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] [2023-12-25 17:44:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 17:44:30,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash -209976204, now seen corresponding path program 1 times [2023-12-25 17:44:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165287372] [2023-12-25 17:44:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:31,554 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 17:44:31,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165287372] [2023-12-25 17:44:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165287372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:31,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:31,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888337620] [2023-12-25 17:44:31,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:31,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:31,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:31,556 INFO L87 Difference]: Start difference. First operand 4867 states and 8149 transitions. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 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 17:44:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:33,903 INFO L93 Difference]: Finished difference Result 13519 states and 22656 transitions. [2023-12-25 17:44:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:33,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2023-12-25 17:44:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:33,926 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:44:33,927 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:33,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:33,934 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22379 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22379 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:33,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22379 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:44:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4868. [2023-12-25 17:44:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4868 states, 4867 states have (on average 1.674542839531539) internal successors, (8150), 4867 states have internal predecessors, (8150), 0 states have call successors, (0), 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 17:44:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 8150 transitions. [2023-12-25 17:44:34,025 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 8150 transitions. Word has length 381 [2023-12-25 17:44:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:34,025 INFO L495 AbstractCegarLoop]: Abstraction has 4868 states and 8150 transitions. [2023-12-25 17:44:34,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 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 17:44:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 8150 transitions. [2023-12-25 17:44:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-25 17:44:34,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:34,028 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] [2023-12-25 17:44:34,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 17:44:34,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:34,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2111825714, now seen corresponding path program 1 times [2023-12-25 17:44:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581643930] [2023-12-25 17:44:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:34,576 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 17:44:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581643930] [2023-12-25 17:44:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581643930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:34,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509690413] [2023-12-25 17:44:34,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:34,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:34,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:34,577 INFO L87 Difference]: Start difference. First operand 4868 states and 8150 transitions. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 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 17:44:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:36,312 INFO L93 Difference]: Finished difference Result 13643 states and 22840 transitions. [2023-12-25 17:44:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2023-12-25 17:44:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:36,349 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:36,349 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:36,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:36,363 INFO L413 NwaCegarLoop]: 6911 mSDtfsCounter, 29648 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29648 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:36,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29648 Valid, 21483 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 17:44:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4873. [2023-12-25 17:44:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4873 states, 4872 states have (on average 1.6742610837438423) internal successors, (8157), 4872 states have internal predecessors, (8157), 0 states have call successors, (0), 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 17:44:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 8157 transitions. [2023-12-25 17:44:36,439 INFO L78 Accepts]: Start accepts. Automaton has 4873 states and 8157 transitions. Word has length 381 [2023-12-25 17:44:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 4873 states and 8157 transitions. [2023-12-25 17:44:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 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 17:44:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4873 states and 8157 transitions. [2023-12-25 17:44:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 17:44:36,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:36,443 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] [2023-12-25 17:44:36,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 17:44:36,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:36,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:36,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1101304622, now seen corresponding path program 1 times [2023-12-25 17:44:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:36,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056575540] [2023-12-25 17:44:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:37,184 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 17:44:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056575540] [2023-12-25 17:44:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056575540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353455755] [2023-12-25 17:44:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:37,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:37,185 INFO L87 Difference]: Start difference. First operand 4873 states and 8157 transitions. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 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 17:44:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:39,583 INFO L93 Difference]: Finished difference Result 13519 states and 22654 transitions. [2023-12-25 17:44:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:39,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2023-12-25 17:44:39,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:39,590 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:44:39,591 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:39,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:39,596 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22370 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22370 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:39,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22370 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:44:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4874. [2023-12-25 17:44:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.6741227170121076) internal successors, (8158), 4873 states have internal predecessors, (8158), 0 states have call successors, (0), 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 17:44:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 8158 transitions. [2023-12-25 17:44:39,649 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 8158 transitions. Word has length 382 [2023-12-25 17:44:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:39,649 INFO L495 AbstractCegarLoop]: Abstraction has 4874 states and 8158 transitions. [2023-12-25 17:44:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 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 17:44:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 8158 transitions. [2023-12-25 17:44:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 17:44:39,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:39,651 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] [2023-12-25 17:44:39,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 17:44:39,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:39,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:39,652 INFO L85 PathProgramCache]: Analyzing trace with hash 287989392, now seen corresponding path program 1 times [2023-12-25 17:44:39,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:39,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127950590] [2023-12-25 17:44:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:39,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:40,362 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 17:44:40,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:40,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127950590] [2023-12-25 17:44:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127950590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:40,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:40,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036441389] [2023-12-25 17:44:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:40,370 INFO L87 Difference]: Start difference. First operand 4874 states and 8158 transitions. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 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 17:44:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:42,951 INFO L93 Difference]: Finished difference Result 13643 states and 22838 transitions. [2023-12-25 17:44:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:42,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2023-12-25 17:44:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:42,959 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:42,959 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:42,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:42,966 INFO L413 NwaCegarLoop]: 6913 mSDtfsCounter, 22426 mSDsluCounter, 21024 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22426 SdHoareTripleChecker+Valid, 27937 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:42,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22426 Valid, 27937 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 17:44:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4879. [2023-12-25 17:44:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4879 states, 4878 states have (on average 1.6738417384173843) internal successors, (8165), 4878 states have internal predecessors, (8165), 0 states have call successors, (0), 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 17:44:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 8165 transitions. [2023-12-25 17:44:43,033 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 8165 transitions. Word has length 382 [2023-12-25 17:44:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:43,033 INFO L495 AbstractCegarLoop]: Abstraction has 4879 states and 8165 transitions. [2023-12-25 17:44:43,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 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 17:44:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 8165 transitions. [2023-12-25 17:44:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 17:44:43,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:43,036 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] [2023-12-25 17:44:43,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 17:44:43,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:43,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1617514856, now seen corresponding path program 1 times [2023-12-25 17:44:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:43,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190807778] [2023-12-25 17:44:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:43,642 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 17:44:43,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:43,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190807778] [2023-12-25 17:44:43,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190807778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:43,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:43,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624629375] [2023-12-25 17:44:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:43,644 INFO L87 Difference]: Start difference. First operand 4879 states and 8165 transitions. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 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 17:44:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:45,769 INFO L93 Difference]: Finished difference Result 13519 states and 22652 transitions. [2023-12-25 17:44:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:45,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2023-12-25 17:44:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:45,778 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:44:45,778 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:45,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:45,785 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22361 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22361 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:45,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22361 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 17:44:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4880. [2023-12-25 17:44:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4879 states have (on average 1.6737036277925805) internal successors, (8166), 4879 states have internal predecessors, (8166), 0 states have call successors, (0), 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 17:44:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 8166 transitions. [2023-12-25 17:44:45,853 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 8166 transitions. Word has length 383 [2023-12-25 17:44:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:45,853 INFO L495 AbstractCegarLoop]: Abstraction has 4880 states and 8166 transitions. [2023-12-25 17:44:45,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 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 17:44:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 8166 transitions. [2023-12-25 17:44:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 17:44:45,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:45,855 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] [2023-12-25 17:44:45,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 17:44:45,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:45,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash -779955674, now seen corresponding path program 1 times [2023-12-25 17:44:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:45,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133225906] [2023-12-25 17:44:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:46,292 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 17:44:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:46,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133225906] [2023-12-25 17:44:46,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133225906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:46,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:46,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:46,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998910327] [2023-12-25 17:44:46,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:46,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:46,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:46,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:46,294 INFO L87 Difference]: Start difference. First operand 4880 states and 8166 transitions. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 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 17:44:47,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:47,825 INFO L93 Difference]: Finished difference Result 13643 states and 22836 transitions. [2023-12-25 17:44:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2023-12-25 17:44:47,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:47,833 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:47,833 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:47,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:47,839 INFO L413 NwaCegarLoop]: 6915 mSDtfsCounter, 29616 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29616 SdHoareTripleChecker+Valid, 21487 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:47,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29616 Valid, 21487 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 17:44:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4885. [2023-12-25 17:44:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 4884 states have (on average 1.6734234234234233) internal successors, (8173), 4884 states have internal predecessors, (8173), 0 states have call successors, (0), 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 17:44:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 8173 transitions. [2023-12-25 17:44:47,904 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 8173 transitions. Word has length 383 [2023-12-25 17:44:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:47,904 INFO L495 AbstractCegarLoop]: Abstraction has 4885 states and 8173 transitions. [2023-12-25 17:44:47,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 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 17:44:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 8173 transitions. [2023-12-25 17:44:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 17:44:47,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:47,906 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] [2023-12-25 17:44:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 17:44:47,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:47,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1993278778, now seen corresponding path program 1 times [2023-12-25 17:44:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876975229] [2023-12-25 17:44:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:48,492 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 17:44:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876975229] [2023-12-25 17:44:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876975229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:48,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:48,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633450029] [2023-12-25 17:44:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:48,494 INFO L87 Difference]: Start difference. First operand 4885 states and 8173 transitions. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 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 17:44:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:50,708 INFO L93 Difference]: Finished difference Result 13519 states and 22650 transitions. [2023-12-25 17:44:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:50,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2023-12-25 17:44:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:50,716 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:44:50,717 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:50,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:50,722 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22352 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22352 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:50,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22352 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:44:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4886. [2023-12-25 17:44:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 4885 states have (on average 1.6732855680655065) internal successors, (8174), 4885 states have internal predecessors, (8174), 0 states have call successors, (0), 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 17:44:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 8174 transitions. [2023-12-25 17:44:50,812 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 8174 transitions. Word has length 384 [2023-12-25 17:44:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:50,812 INFO L495 AbstractCegarLoop]: Abstraction has 4886 states and 8174 transitions. [2023-12-25 17:44:50,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 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 17:44:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 8174 transitions. [2023-12-25 17:44:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 17:44:50,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:50,814 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] [2023-12-25 17:44:50,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 17:44:50,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:50,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1244957316, now seen corresponding path program 1 times [2023-12-25 17:44:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:50,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935515654] [2023-12-25 17:44:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:50,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:51,289 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 17:44:51,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:51,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935515654] [2023-12-25 17:44:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935515654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:51,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:51,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:51,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719863225] [2023-12-25 17:44:51,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:51,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:51,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:51,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:51,291 INFO L87 Difference]: Start difference. First operand 4886 states and 8174 transitions. Second operand has 6 states, 6 states have (on average 64.0) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 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 17:44:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:53,780 INFO L93 Difference]: Finished difference Result 13643 states and 22834 transitions. [2023-12-25 17:44:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:53,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.0) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2023-12-25 17:44:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:53,788 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:53,788 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:53,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:53,807 INFO L413 NwaCegarLoop]: 6917 mSDtfsCounter, 22408 mSDsluCounter, 21024 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22408 SdHoareTripleChecker+Valid, 27941 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:53,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22408 Valid, 27941 Invalid, 3294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 3232 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 17:44:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4891. [2023-12-25 17:44:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4891 states, 4890 states have (on average 1.673006134969325) internal successors, (8181), 4890 states have internal predecessors, (8181), 0 states have call successors, (0), 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 17:44:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 8181 transitions. [2023-12-25 17:44:53,893 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 8181 transitions. Word has length 384 [2023-12-25 17:44:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:53,894 INFO L495 AbstractCegarLoop]: Abstraction has 4891 states and 8181 transitions. [2023-12-25 17:44:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.0) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 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 17:44:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 8181 transitions. [2023-12-25 17:44:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-25 17:44:53,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:53,896 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] [2023-12-25 17:44:53,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 17:44:53,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:53,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2013449636, now seen corresponding path program 1 times [2023-12-25 17:44:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936398471] [2023-12-25 17:44:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:54,460 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 17:44:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936398471] [2023-12-25 17:44:54,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936398471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:54,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:54,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:44:54,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139169208] [2023-12-25 17:44:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:54,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:44:54,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:44:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:44:54,462 INFO L87 Difference]: Start difference. First operand 4891 states and 8181 transitions. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 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 17:44:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:56,805 INFO L93 Difference]: Finished difference Result 13519 states and 22648 transitions. [2023-12-25 17:44:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:44:56,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2023-12-25 17:44:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:56,813 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:44:56,813 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:44:56,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:44:56,819 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22343 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22343 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:56,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22343 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:44:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:44:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4892. [2023-12-25 17:44:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4891 states have (on average 1.672868534042118) internal successors, (8182), 4891 states have internal predecessors, (8182), 0 states have call successors, (0), 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 17:44:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 8182 transitions. [2023-12-25 17:44:56,881 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 8182 transitions. Word has length 385 [2023-12-25 17:44:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:56,881 INFO L495 AbstractCegarLoop]: Abstraction has 4892 states and 8182 transitions. [2023-12-25 17:44:56,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 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 17:44:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 8182 transitions. [2023-12-25 17:44:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-25 17:44:56,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:56,883 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] [2023-12-25 17:44:56,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 17:44:56,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:56,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2041949926, now seen corresponding path program 1 times [2023-12-25 17:44:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462129454] [2023-12-25 17:44:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:44:57,315 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 17:44:57,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:44:57,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462129454] [2023-12-25 17:44:57,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462129454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:44:57,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:44:57,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:44:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825898893] [2023-12-25 17:44:57,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:44:57,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:44:57,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:44:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:44:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:44:57,317 INFO L87 Difference]: Start difference. First operand 4892 states and 8182 transitions. Second operand has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 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 17:44:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:44:59,704 INFO L93 Difference]: Finished difference Result 13643 states and 22832 transitions. [2023-12-25 17:44:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:44:59,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2023-12-25 17:44:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:44:59,712 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:44:59,712 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:44:59,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:44:59,717 INFO L413 NwaCegarLoop]: 6919 mSDtfsCounter, 22399 mSDsluCounter, 21024 mSDsCounter, 0 mSdLazyCounter, 3230 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22399 SdHoareTripleChecker+Valid, 27943 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:44:59,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22399 Valid, 27943 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3230 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:44:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:44:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4897. [2023-12-25 17:44:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4897 states, 4896 states have (on average 1.6725898692810457) internal successors, (8189), 4896 states have internal predecessors, (8189), 0 states have call successors, (0), 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 17:44:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4897 states to 4897 states and 8189 transitions. [2023-12-25 17:44:59,770 INFO L78 Accepts]: Start accepts. Automaton has 4897 states and 8189 transitions. Word has length 385 [2023-12-25 17:44:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:44:59,771 INFO L495 AbstractCegarLoop]: Abstraction has 4897 states and 8189 transitions. [2023-12-25 17:44:59,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 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 17:44:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4897 states and 8189 transitions. [2023-12-25 17:44:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2023-12-25 17:44:59,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:44:59,773 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] [2023-12-25 17:44:59,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 17:44:59,773 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:44:59,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:44:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1026990918, now seen corresponding path program 1 times [2023-12-25 17:44:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:44:59,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782712446] [2023-12-25 17:44:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:44:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:44:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:00,307 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 17:45:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:00,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782712446] [2023-12-25 17:45:00,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782712446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:00,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:00,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670217487] [2023-12-25 17:45:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:00,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:45:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:45:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:45:00,308 INFO L87 Difference]: Start difference. First operand 4897 states and 8189 transitions. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 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 17:45:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:02,660 INFO L93 Difference]: Finished difference Result 13519 states and 22646 transitions. [2023-12-25 17:45:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:45:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2023-12-25 17:45:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:02,669 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:45:02,669 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:45:02,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:45:02,676 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22334 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22334 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:02,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22334 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:45:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:45:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4898. [2023-12-25 17:45:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4897 states have (on average 1.6724525219522157) internal successors, (8190), 4897 states have internal predecessors, (8190), 0 states have call successors, (0), 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 17:45:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 8190 transitions. [2023-12-25 17:45:02,728 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 8190 transitions. Word has length 386 [2023-12-25 17:45:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:02,728 INFO L495 AbstractCegarLoop]: Abstraction has 4898 states and 8190 transitions. [2023-12-25 17:45:02,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 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 17:45:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 8190 transitions. [2023-12-25 17:45:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2023-12-25 17:45:02,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:02,730 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] [2023-12-25 17:45:02,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 17:45:02,731 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:02,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2021684616, now seen corresponding path program 1 times [2023-12-25 17:45:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745390104] [2023-12-25 17:45:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:03,109 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 17:45:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:03,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745390104] [2023-12-25 17:45:03,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745390104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:03,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:03,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:45:03,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870428461] [2023-12-25 17:45:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:03,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:45:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:45:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:45:03,113 INFO L87 Difference]: Start difference. First operand 4898 states and 8190 transitions. Second operand has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 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 17:45:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:04,678 INFO L93 Difference]: Finished difference Result 13643 states and 22830 transitions. [2023-12-25 17:45:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2023-12-25 17:45:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:04,686 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:45:04,686 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:45:04,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:45:04,692 INFO L413 NwaCegarLoop]: 6921 mSDtfsCounter, 29564 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29564 SdHoareTripleChecker+Valid, 21493 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:04,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29564 Valid, 21493 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 17:45:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:45:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4906. [2023-12-25 17:45:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4905 states have (on average 1.6721712538226299) internal successors, (8202), 4905 states have internal predecessors, (8202), 0 states have call successors, (0), 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 17:45:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 8202 transitions. [2023-12-25 17:45:04,754 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 8202 transitions. Word has length 386 [2023-12-25 17:45:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:04,754 INFO L495 AbstractCegarLoop]: Abstraction has 4906 states and 8202 transitions. [2023-12-25 17:45:04,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 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 17:45:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 8202 transitions. [2023-12-25 17:45:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-25 17:45:04,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:04,756 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] [2023-12-25 17:45:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 17:45:04,756 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:04,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1014667562, now seen corresponding path program 1 times [2023-12-25 17:45:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117390764] [2023-12-25 17:45:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:05,267 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 17:45:05,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:05,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117390764] [2023-12-25 17:45:05,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117390764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556253251] [2023-12-25 17:45:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:05,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:45:05,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:45:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:45:05,269 INFO L87 Difference]: Start difference. First operand 4906 states and 8202 transitions. Second operand has 5 states, 5 states have (on average 77.4) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 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 17:45:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:07,664 INFO L93 Difference]: Finished difference Result 13519 states and 22644 transitions. [2023-12-25 17:45:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:45:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2023-12-25 17:45:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:07,672 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:45:07,672 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:45:07,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:45:07,677 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22323 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22323 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:07,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22323 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 17:45:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:45:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4907. [2023-12-25 17:45:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4906 states have (on average 1.6720342437831226) internal successors, (8203), 4906 states have internal predecessors, (8203), 0 states have call successors, (0), 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 17:45:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 8203 transitions. [2023-12-25 17:45:07,723 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 8203 transitions. Word has length 387 [2023-12-25 17:45:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:07,723 INFO L495 AbstractCegarLoop]: Abstraction has 4907 states and 8203 transitions. [2023-12-25 17:45:07,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 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 17:45:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 8203 transitions. [2023-12-25 17:45:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-25 17:45:07,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:07,725 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] [2023-12-25 17:45:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 17:45:07,725 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:07,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1713541784, now seen corresponding path program 1 times [2023-12-25 17:45:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072208586] [2023-12-25 17:45:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:08,110 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 17:45:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072208586] [2023-12-25 17:45:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072208586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:45:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046747611] [2023-12-25 17:45:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:45:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:45:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:45:08,113 INFO L87 Difference]: Start difference. First operand 4907 states and 8203 transitions. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 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 17:45:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:09,565 INFO L93 Difference]: Finished difference Result 13643 states and 22828 transitions. [2023-12-25 17:45:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:09,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2023-12-25 17:45:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:09,574 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:45:09,574 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:45:09,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:45:09,580 INFO L413 NwaCegarLoop]: 6923 mSDtfsCounter, 29548 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29548 SdHoareTripleChecker+Valid, 21495 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:09,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29548 Valid, 21495 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 17:45:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:45:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4912. [2023-12-25 17:45:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4911 states have (on average 1.671757279576461) internal successors, (8210), 4911 states have internal predecessors, (8210), 0 states have call successors, (0), 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 17:45:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 8210 transitions. [2023-12-25 17:45:09,643 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 8210 transitions. Word has length 387 [2023-12-25 17:45:09,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:09,643 INFO L495 AbstractCegarLoop]: Abstraction has 4912 states and 8210 transitions. [2023-12-25 17:45:09,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 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 17:45:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 8210 transitions. [2023-12-25 17:45:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-12-25 17:45:09,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:09,645 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] [2023-12-25 17:45:09,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 17:45:09,645 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:09,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash 595019436, now seen corresponding path program 1 times [2023-12-25 17:45:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:09,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977940548] [2023-12-25 17:45:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:09,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:10,038 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 17:45:10,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977940548] [2023-12-25 17:45:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977940548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:10,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:45:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461530757] [2023-12-25 17:45:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:45:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:45:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:45:10,043 INFO L87 Difference]: Start difference. First operand 4912 states and 8210 transitions. Second operand has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 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 17:45:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:11,538 INFO L93 Difference]: Finished difference Result 13643 states and 22827 transitions. [2023-12-25 17:45:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2023-12-25 17:45:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:11,545 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:45:11,545 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:45:11,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:45:11,551 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 29531 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29531 SdHoareTripleChecker+Valid, 21496 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:11,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29531 Valid, 21496 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 17:45:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:45:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4921. [2023-12-25 17:45:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4921 states, 4920 states have (on average 1.6715447154471545) internal successors, (8224), 4920 states have internal predecessors, (8224), 0 states have call successors, (0), 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 17:45:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4921 states to 4921 states and 8224 transitions. [2023-12-25 17:45:11,600 INFO L78 Accepts]: Start accepts. Automaton has 4921 states and 8224 transitions. Word has length 388 [2023-12-25 17:45:11,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:11,600 INFO L495 AbstractCegarLoop]: Abstraction has 4921 states and 8224 transitions. [2023-12-25 17:45:11,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 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 17:45:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4921 states and 8224 transitions. [2023-12-25 17:45:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-12-25 17:45:11,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:11,611 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] [2023-12-25 17:45:11,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 17:45:11,611 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:11,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1035589176, now seen corresponding path program 1 times [2023-12-25 17:45:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:11,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137188032] [2023-12-25 17:45:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:12,180 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 17:45:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137188032] [2023-12-25 17:45:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137188032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:12,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079580078] [2023-12-25 17:45:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:45:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:45:12,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:45:12,182 INFO L87 Difference]: Start difference. First operand 4921 states and 8224 transitions. Second operand has 5 states, 5 states have (on average 77.8) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:14,282 INFO L93 Difference]: Finished difference Result 13519 states and 22641 transitions. [2023-12-25 17:45:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:45:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2023-12-25 17:45:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:14,289 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:45:14,289 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:45:14,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:45:14,296 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22305 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22305 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:14,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22305 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 17:45:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:45:14,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4922. [2023-12-25 17:45:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 4921 states have (on average 1.6714082503556187) internal successors, (8225), 4921 states have internal predecessors, (8225), 0 states have call successors, (0), 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 17:45:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 8225 transitions. [2023-12-25 17:45:14,348 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 8225 transitions. Word has length 389 [2023-12-25 17:45:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:14,348 INFO L495 AbstractCegarLoop]: Abstraction has 4922 states and 8225 transitions. [2023-12-25 17:45:14,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 8225 transitions. [2023-12-25 17:45:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-12-25 17:45:14,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:14,357 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] [2023-12-25 17:45:14,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 17:45:14,357 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:14,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1112489974, now seen corresponding path program 1 times [2023-12-25 17:45:14,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:14,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776556483] [2023-12-25 17:45:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:14,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:14,760 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 17:45:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776556483] [2023-12-25 17:45:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776556483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:14,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:45:14,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632947688] [2023-12-25 17:45:14,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:45:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:45:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:45:14,762 INFO L87 Difference]: Start difference. First operand 4922 states and 8225 transitions. Second operand has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:16,357 INFO L93 Difference]: Finished difference Result 13643 states and 22825 transitions. [2023-12-25 17:45:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2023-12-25 17:45:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:16,364 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:45:16,364 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:45:16,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:45:16,368 INFO L413 NwaCegarLoop]: 6926 mSDtfsCounter, 29515 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29515 SdHoareTripleChecker+Valid, 21498 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:16,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29515 Valid, 21498 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 17:45:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:45:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4927. [2023-12-25 17:45:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4926 states have (on average 1.6711327649208283) internal successors, (8232), 4926 states have internal predecessors, (8232), 0 states have call successors, (0), 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 17:45:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 8232 transitions. [2023-12-25 17:45:16,415 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 8232 transitions. Word has length 389 [2023-12-25 17:45:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:16,415 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 8232 transitions. [2023-12-25 17:45:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 8232 transitions. [2023-12-25 17:45:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-25 17:45:16,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:16,417 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] [2023-12-25 17:45:16,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 17:45:16,417 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:16,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash -484948382, now seen corresponding path program 1 times [2023-12-25 17:45:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:16,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293343396] [2023-12-25 17:45:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:16,910 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 17:45:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293343396] [2023-12-25 17:45:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293343396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:16,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247201499] [2023-12-25 17:45:16,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:45:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:45:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:45:16,911 INFO L87 Difference]: Start difference. First operand 4927 states and 8232 transitions. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 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 17:45:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:18,862 INFO L93 Difference]: Finished difference Result 13519 states and 22639 transitions. [2023-12-25 17:45:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:45:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2023-12-25 17:45:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:18,871 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:45:18,871 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:45:18,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:45:18,877 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22296 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22296 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:18,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22296 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:45:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:45:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4928. [2023-12-25 17:45:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 1.670996549624518) internal successors, (8233), 4927 states have internal predecessors, (8233), 0 states have call successors, (0), 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 17:45:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 8233 transitions. [2023-12-25 17:45:18,927 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 8233 transitions. Word has length 390 [2023-12-25 17:45:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:18,927 INFO L495 AbstractCegarLoop]: Abstraction has 4928 states and 8233 transitions. [2023-12-25 17:45:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 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 17:45:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 8233 transitions. [2023-12-25 17:45:18,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-25 17:45:18,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:18,930 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] [2023-12-25 17:45:18,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 17:45:18,930 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:18,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash 468991776, now seen corresponding path program 1 times [2023-12-25 17:45:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888650199] [2023-12-25 17:45:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:18,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:19,337 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 17:45:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888650199] [2023-12-25 17:45:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888650199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:19,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:19,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:45:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643147027] [2023-12-25 17:45:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:45:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:45:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:45:19,339 INFO L87 Difference]: Start difference. First operand 4928 states and 8233 transitions. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 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 17:45:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:21,797 INFO L93 Difference]: Finished difference Result 13643 states and 22823 transitions. [2023-12-25 17:45:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:21,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2023-12-25 17:45:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:21,806 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:45:21,807 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:45:21,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:45:21,813 INFO L413 NwaCegarLoop]: 6928 mSDtfsCounter, 22350 mSDsluCounter, 21024 mSDsCounter, 0 mSdLazyCounter, 3221 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22350 SdHoareTripleChecker+Valid, 27952 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:21,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22350 Valid, 27952 Invalid, 3283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 3221 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 17:45:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:45:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4936. [2023-12-25 17:45:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 4935 states have (on average 1.6707193515704153) internal successors, (8245), 4935 states have internal predecessors, (8245), 0 states have call successors, (0), 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 17:45:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 8245 transitions. [2023-12-25 17:45:21,881 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 8245 transitions. Word has length 390 [2023-12-25 17:45:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:21,881 INFO L495 AbstractCegarLoop]: Abstraction has 4936 states and 8245 transitions. [2023-12-25 17:45:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 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 17:45:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 8245 transitions. [2023-12-25 17:45:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-25 17:45:21,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:21,883 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] [2023-12-25 17:45:21,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 17:45:21,883 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:21,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1178757316, now seen corresponding path program 1 times [2023-12-25 17:45:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742482349] [2023-12-25 17:45:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:22,292 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 17:45:22,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742482349] [2023-12-25 17:45:22,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742482349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:22,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:22,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:45:22,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284357962] [2023-12-25 17:45:22,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:22,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:45:22,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:22,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:45:22,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:45:22,294 INFO L87 Difference]: Start difference. First operand 4936 states and 8245 transitions. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 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 17:45:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:23,912 INFO L93 Difference]: Finished difference Result 13643 states and 22822 transitions. [2023-12-25 17:45:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2023-12-25 17:45:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:23,919 INFO L225 Difference]: With dead ends: 13643 [2023-12-25 17:45:23,919 INFO L226 Difference]: Without dead ends: 9181 [2023-12-25 17:45:23,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:45:23,924 INFO L413 NwaCegarLoop]: 6929 mSDtfsCounter, 29482 mSDsluCounter, 14572 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29482 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:23,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29482 Valid, 21501 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 17:45:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2023-12-25 17:45:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 4942. [2023-12-25 17:45:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 4941 states have (on average 1.6705120420967416) internal successors, (8254), 4941 states have internal predecessors, (8254), 0 states have call successors, (0), 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 17:45:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 8254 transitions. [2023-12-25 17:45:23,969 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 8254 transitions. Word has length 391 [2023-12-25 17:45:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:23,969 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 8254 transitions. [2023-12-25 17:45:23,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 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 17:45:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 8254 transitions. [2023-12-25 17:45:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-25 17:45:23,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:23,971 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] [2023-12-25 17:45:23,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 17:45:23,971 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:23,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 550028694, now seen corresponding path program 1 times [2023-12-25 17:45:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:23,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851411319] [2023-12-25 17:45:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:24,522 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 17:45:24,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851411319] [2023-12-25 17:45:24,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851411319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:24,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:24,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935164908] [2023-12-25 17:45:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:24,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:45:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:45:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:45:24,523 INFO L87 Difference]: Start difference. First operand 4942 states and 8254 transitions. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:26,831 INFO L93 Difference]: Finished difference Result 13519 states and 22636 transitions. [2023-12-25 17:45:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:45:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2023-12-25 17:45:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:26,843 INFO L225 Difference]: With dead ends: 13519 [2023-12-25 17:45:26,843 INFO L226 Difference]: Without dead ends: 9057 [2023-12-25 17:45:26,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:45:26,855 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 22278 mSDsluCounter, 13267 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22278 SdHoareTripleChecker+Valid, 19904 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:26,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22278 Valid, 19904 Invalid, 3198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:45:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-12-25 17:45:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4943. [2023-12-25 17:45:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4942 states have (on average 1.670376365843788) internal successors, (8255), 4942 states have internal predecessors, (8255), 0 states have call successors, (0), 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 17:45:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 8255 transitions. [2023-12-25 17:45:26,935 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 8255 transitions. Word has length 392 [2023-12-25 17:45:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 4943 states and 8255 transitions. [2023-12-25 17:45:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 8255 transitions. [2023-12-25 17:45:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-25 17:45:26,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:26,938 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] [2023-12-25 17:45:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 17:45:26,938 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:26,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 983757780, now seen corresponding path program 1 times [2023-12-25 17:45:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155022064] [2023-12-25 17:45:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:27,561 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 17:45:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:27,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155022064] [2023-12-25 17:45:27,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155022064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:27,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60890504] [2023-12-25 17:45:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:27,562 INFO L87 Difference]: Start difference. First operand 4943 states and 8255 transitions. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:27,678 INFO L93 Difference]: Finished difference Result 4947 states and 8259 transitions. [2023-12-25 17:45:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:27,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2023-12-25 17:45:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:27,683 INFO L225 Difference]: With dead ends: 4947 [2023-12-25 17:45:27,683 INFO L226 Difference]: Without dead ends: 4945 [2023-12-25 17:45:27,684 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 17:45:27,684 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 1 mSDsluCounter, 15391 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23089 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:27,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23089 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2023-12-25 17:45:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4945. [2023-12-25 17:45:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 4944 states have (on average 1.6701051779935274) internal successors, (8257), 4944 states have internal predecessors, (8257), 0 states have call successors, (0), 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 17:45:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 8257 transitions. [2023-12-25 17:45:27,721 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 8257 transitions. Word has length 392 [2023-12-25 17:45:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:27,721 INFO L495 AbstractCegarLoop]: Abstraction has 4945 states and 8257 transitions. [2023-12-25 17:45:27,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 8257 transitions. [2023-12-25 17:45:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-25 17:45:27,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:27,723 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] [2023-12-25 17:45:27,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 17:45:27,723 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:27,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash 433447300, now seen corresponding path program 1 times [2023-12-25 17:45:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:27,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063998488] [2023-12-25 17:45:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:28,019 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 17:45:28,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063998488] [2023-12-25 17:45:28,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063998488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:28,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:28,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:28,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606926833] [2023-12-25 17:45:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:28,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:28,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:28,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:28,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:28,021 INFO L87 Difference]: Start difference. First operand 4945 states and 8257 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:28,108 INFO L93 Difference]: Finished difference Result 9412 states and 15743 transitions. [2023-12-25 17:45:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 393 [2023-12-25 17:45:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:28,113 INFO L225 Difference]: With dead ends: 9412 [2023-12-25 17:45:28,113 INFO L226 Difference]: Without dead ends: 4948 [2023-12-25 17:45:28,116 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 17:45:28,116 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 1 mSDsluCounter, 15389 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23087 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:28,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23087 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2023-12-25 17:45:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4947. [2023-12-25 17:45:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4946 states have (on average 1.6698342094621916) internal successors, (8259), 4946 states have internal predecessors, (8259), 0 states have call successors, (0), 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 17:45:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 8259 transitions. [2023-12-25 17:45:28,155 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 8259 transitions. Word has length 393 [2023-12-25 17:45:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:28,156 INFO L495 AbstractCegarLoop]: Abstraction has 4947 states and 8259 transitions. [2023-12-25 17:45:28,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:45:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 8259 transitions. [2023-12-25 17:45:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-25 17:45:28,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:28,157 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] [2023-12-25 17:45:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 17:45:28,158 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2116541552, now seen corresponding path program 1 times [2023-12-25 17:45:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725060756] [2023-12-25 17:45:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:28,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:28,657 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 17:45:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725060756] [2023-12-25 17:45:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725060756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:28,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:28,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831579997] [2023-12-25 17:45:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:45:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:45:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:45:28,659 INFO L87 Difference]: Start difference. First operand 4947 states and 8259 transitions. Second operand has 5 states, 5 states have (on average 78.8) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 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 17:45:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:28,847 INFO L93 Difference]: Finished difference Result 13947 states and 23342 transitions. [2023-12-25 17:45:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:45:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 78.8) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2023-12-25 17:45:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:28,859 INFO L225 Difference]: With dead ends: 13947 [2023-12-25 17:45:28,859 INFO L226 Difference]: Without dead ends: 9481 [2023-12-25 17:45:28,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:45:28,863 INFO L413 NwaCegarLoop]: 8376 mSDtfsCounter, 30385 mSDsluCounter, 15390 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30385 SdHoareTripleChecker+Valid, 23766 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:28,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30385 Valid, 23766 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2023-12-25 17:45:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 5024. [2023-12-25 17:45:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5024 states, 5023 states have (on average 1.6695202070475812) internal successors, (8386), 5023 states have internal predecessors, (8386), 0 states have call successors, (0), 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 17:45:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 8386 transitions. [2023-12-25 17:45:28,923 INFO L78 Accepts]: Start accepts. Automaton has 5024 states and 8386 transitions. Word has length 394 [2023-12-25 17:45:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:28,923 INFO L495 AbstractCegarLoop]: Abstraction has 5024 states and 8386 transitions. [2023-12-25 17:45:28,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.8) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 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 17:45:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5024 states and 8386 transitions. [2023-12-25 17:45:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:28,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:28,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:28,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 17:45:28,978 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:28,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:28,979 INFO L85 PathProgramCache]: Analyzing trace with hash -769100609, now seen corresponding path program 1 times [2023-12-25 17:45:28,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:28,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954512203] [2023-12-25 17:45:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:29,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134524228] [2023-12-25 17:45:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:29,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:29,284 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 17:45:29,285 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 17:45:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:32,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 14338 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:32,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:32,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:32,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:32,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954512203] [2023-12-25 17:45:32,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:32,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134524228] [2023-12-25 17:45:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134524228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:32,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:32,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284069703] [2023-12-25 17:45:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:32,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:32,600 INFO L87 Difference]: Start difference. First operand 5024 states and 8386 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:32,686 INFO L93 Difference]: Finished difference Result 9500 states and 15886 transitions. [2023-12-25 17:45:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:32,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:32,692 INFO L225 Difference]: With dead ends: 9500 [2023-12-25 17:45:32,692 INFO L226 Difference]: Without dead ends: 5034 [2023-12-25 17:45:32,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:32,696 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:45:32,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2023-12-25 17:45:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5026. [2023-12-25 17:45:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 1.6692537313432836) internal successors, (8388), 5025 states have internal predecessors, (8388), 0 states have call successors, (0), 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 17:45:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 8388 transitions. [2023-12-25 17:45:32,738 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 8388 transitions. Word has length 3135 [2023-12-25 17:45:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:32,740 INFO L495 AbstractCegarLoop]: Abstraction has 5026 states and 8388 transitions. [2023-12-25 17:45:32,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 8388 transitions. [2023-12-25 17:45:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:32,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:32,796 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:32,830 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 17:45:33,024 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,SelfDestructingSolverStorable28 [2023-12-25 17:45:33,025 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:33,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash -718042703, now seen corresponding path program 1 times [2023-12-25 17:45:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:33,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326014914] [2023-12-25 17:45:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:33,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:33,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957309031] [2023-12-25 17:45:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:33,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:33,289 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 17:45:33,316 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 17:45:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:36,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 14339 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:36,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:36,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:36,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326014914] [2023-12-25 17:45:36,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957309031] [2023-12-25 17:45:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957309031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:36,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:36,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:36,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011055457] [2023-12-25 17:45:36,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:36,664 INFO L87 Difference]: Start difference. First operand 5026 states and 8388 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:36,742 INFO L93 Difference]: Finished difference Result 9503 states and 15888 transitions. [2023-12-25 17:45:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:36,752 INFO L225 Difference]: With dead ends: 9503 [2023-12-25 17:45:36,752 INFO L226 Difference]: Without dead ends: 5035 [2023-12-25 17:45:36,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:36,757 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:45:36,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2023-12-25 17:45:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 5027. [2023-12-25 17:45:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 5026 states have (on average 1.6691205730202945) internal successors, (8389), 5026 states have internal predecessors, (8389), 0 states have call successors, (0), 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 17:45:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 8389 transitions. [2023-12-25 17:45:36,804 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 8389 transitions. Word has length 3135 [2023-12-25 17:45:36,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:36,805 INFO L495 AbstractCegarLoop]: Abstraction has 5027 states and 8389 transitions. [2023-12-25 17:45:36,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 8389 transitions. [2023-12-25 17:45:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:36,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:36,861 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:36,903 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 17:45:37,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:37,084 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:37,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1785930205, now seen corresponding path program 1 times [2023-12-25 17:45:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:37,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86988985] [2023-12-25 17:45:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:37,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667910158] [2023-12-25 17:45:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:37,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:37,326 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 17:45:37,336 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 17:45:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:40,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 14340 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:40,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:40,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:40,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86988985] [2023-12-25 17:45:40,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667910158] [2023-12-25 17:45:40,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667910158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:40,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:40,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:40,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573938617] [2023-12-25 17:45:40,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:40,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:40,602 INFO L87 Difference]: Start difference. First operand 5027 states and 8389 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:40,677 INFO L93 Difference]: Finished difference Result 9505 states and 15890 transitions. [2023-12-25 17:45:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:40,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:40,683 INFO L225 Difference]: With dead ends: 9505 [2023-12-25 17:45:40,683 INFO L226 Difference]: Without dead ends: 5036 [2023-12-25 17:45:40,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:40,686 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:45:40,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2023-12-25 17:45:40,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 5028. [2023-12-25 17:45:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 1.6689874676745573) internal successors, (8390), 5027 states have internal predecessors, (8390), 0 states have call successors, (0), 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 17:45:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 8390 transitions. [2023-12-25 17:45:40,719 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 8390 transitions. Word has length 3135 [2023-12-25 17:45:40,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:40,720 INFO L495 AbstractCegarLoop]: Abstraction has 5028 states and 8390 transitions. [2023-12-25 17:45:40,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 8390 transitions. [2023-12-25 17:45:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:40,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:40,774 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:40,807 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 17:45:41,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:41,001 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:41,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash 432076053, now seen corresponding path program 1 times [2023-12-25 17:45:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887566272] [2023-12-25 17:45:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:41,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:41,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:41,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772345652] [2023-12-25 17:45:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:41,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:41,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:41,211 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 17:45:41,236 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 17:45:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:44,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 14341 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:44,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:44,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887566272] [2023-12-25 17:45:44,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772345652] [2023-12-25 17:45:44,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772345652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:44,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:44,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:44,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686190004] [2023-12-25 17:45:44,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:44,560 INFO L87 Difference]: Start difference. First operand 5028 states and 8390 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:44,636 INFO L93 Difference]: Finished difference Result 9507 states and 15892 transitions. [2023-12-25 17:45:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:44,642 INFO L225 Difference]: With dead ends: 9507 [2023-12-25 17:45:44,642 INFO L226 Difference]: Without dead ends: 5037 [2023-12-25 17:45:44,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:44,646 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:45:44,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:44,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5037 states. [2023-12-25 17:45:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 5029. [2023-12-25 17:45:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 5028 states have (on average 1.668854415274463) internal successors, (8391), 5028 states have internal predecessors, (8391), 0 states have call successors, (0), 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 17:45:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 8391 transitions. [2023-12-25 17:45:44,680 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 8391 transitions. Word has length 3135 [2023-12-25 17:45:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:44,681 INFO L495 AbstractCegarLoop]: Abstraction has 5029 states and 8391 transitions. [2023-12-25 17:45:44,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 8391 transitions. [2023-12-25 17:45:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:44,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:44,736 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:44,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-25 17:45:44,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:44,944 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:44,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash 233446535, now seen corresponding path program 1 times [2023-12-25 17:45:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:44,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270358504] [2023-12-25 17:45:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:44,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:45,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358091028] [2023-12-25 17:45:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:45,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:45,172 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 17:45:45,175 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 17:45:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:48,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 14342 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:48,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:48,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270358504] [2023-12-25 17:45:48,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358091028] [2023-12-25 17:45:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358091028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:48,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098909271] [2023-12-25 17:45:48,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:48,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:48,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:48,349 INFO L87 Difference]: Start difference. First operand 5029 states and 8391 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:48,426 INFO L93 Difference]: Finished difference Result 9509 states and 15894 transitions. [2023-12-25 17:45:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:48,432 INFO L225 Difference]: With dead ends: 9509 [2023-12-25 17:45:48,433 INFO L226 Difference]: Without dead ends: 5038 [2023-12-25 17:45:48,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:48,437 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:45:48,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2023-12-25 17:45:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 5030. [2023-12-25 17:45:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5030 states, 5029 states have (on average 1.6687214157884271) internal successors, (8392), 5029 states have internal predecessors, (8392), 0 states have call successors, (0), 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 17:45:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5030 states to 5030 states and 8392 transitions. [2023-12-25 17:45:48,481 INFO L78 Accepts]: Start accepts. Automaton has 5030 states and 8392 transitions. Word has length 3135 [2023-12-25 17:45:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:48,482 INFO L495 AbstractCegarLoop]: Abstraction has 5030 states and 8392 transitions. [2023-12-25 17:45:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5030 states and 8392 transitions. [2023-12-25 17:45:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:48,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:48,540 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:48,577 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 17:45:48,768 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,SelfDestructingSolverStorable32 [2023-12-25 17:45:48,769 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:48,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1869036921, now seen corresponding path program 1 times [2023-12-25 17:45:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:48,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435314213] [2023-12-25 17:45:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:48,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:48,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758076262] [2023-12-25 17:45:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:48,979 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 17:45:48,980 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 17:45:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:52,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 14343 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:52,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:52,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:52,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435314213] [2023-12-25 17:45:52,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758076262] [2023-12-25 17:45:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758076262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414219871] [2023-12-25 17:45:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:52,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:52,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:52,225 INFO L87 Difference]: Start difference. First operand 5030 states and 8392 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:52,461 INFO L93 Difference]: Finished difference Result 9511 states and 15896 transitions. [2023-12-25 17:45:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:52,468 INFO L225 Difference]: With dead ends: 9511 [2023-12-25 17:45:52,468 INFO L226 Difference]: Without dead ends: 5039 [2023-12-25 17:45:52,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:52,471 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:45:52,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2023-12-25 17:45:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 5031. [2023-12-25 17:45:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5031 states, 5030 states have (on average 1.6685884691848907) internal successors, (8393), 5030 states have internal predecessors, (8393), 0 states have call successors, (0), 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 17:45:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5031 states to 5031 states and 8393 transitions. [2023-12-25 17:45:52,516 INFO L78 Accepts]: Start accepts. Automaton has 5031 states and 8393 transitions. Word has length 3135 [2023-12-25 17:45:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:52,517 INFO L495 AbstractCegarLoop]: Abstraction has 5031 states and 8393 transitions. [2023-12-25 17:45:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5031 states and 8393 transitions. [2023-12-25 17:45:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:52,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:52,571 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:52,604 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 17:45:52,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:52,801 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:52,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -420604693, now seen corresponding path program 1 times [2023-12-25 17:45:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523694417] [2023-12-25 17:45:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:53,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:53,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799403609] [2023-12-25 17:45:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:53,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:53,020 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 17:45:53,021 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 17:45:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:56,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 14344 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:56,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:45:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:45:56,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:45:56,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:45:56,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523694417] [2023-12-25 17:45:56,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:45:56,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799403609] [2023-12-25 17:45:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799403609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:45:56,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:45:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:45:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448308251] [2023-12-25 17:45:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:45:56,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:45:56,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:45:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:45:56,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:45:56,239 INFO L87 Difference]: Start difference. First operand 5031 states and 8393 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:45:56,315 INFO L93 Difference]: Finished difference Result 9513 states and 15898 transitions. [2023-12-25 17:45:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:45:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:45:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:45:56,321 INFO L225 Difference]: With dead ends: 9513 [2023-12-25 17:45:56,321 INFO L226 Difference]: Without dead ends: 5040 [2023-12-25 17:45:56,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:45:56,324 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:45:56,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:45:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2023-12-25 17:45:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5032. [2023-12-25 17:45:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 5031 states have (on average 1.6684555754323196) internal successors, (8394), 5031 states have internal predecessors, (8394), 0 states have call successors, (0), 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 17:45:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 8394 transitions. [2023-12-25 17:45:56,360 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 8394 transitions. Word has length 3135 [2023-12-25 17:45:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:45:56,361 INFO L495 AbstractCegarLoop]: Abstraction has 5032 states and 8394 transitions. [2023-12-25 17:45:56,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:45:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 8394 transitions. [2023-12-25 17:45:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:45:56,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:45:56,415 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:56,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 17:45:56,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:56,629 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:45:56,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:45:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1499709533, now seen corresponding path program 1 times [2023-12-25 17:45:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:45:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804454183] [2023-12-25 17:45:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:45:56,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:45:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973150919] [2023-12-25 17:45:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:45:56,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:45:56,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:45:56,839 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 17:45:56,866 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 17:45:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:45:59,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 14345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:45:59,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:00,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:46:00,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804454183] [2023-12-25 17:46:00,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973150919] [2023-12-25 17:46:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973150919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:46:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:46:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:46:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643024236] [2023-12-25 17:46:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:00,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:46:00,020 INFO L87 Difference]: Start difference. First operand 5032 states and 8394 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:46:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:00,100 INFO L93 Difference]: Finished difference Result 9515 states and 15900 transitions. [2023-12-25 17:46:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:46:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:46:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:00,105 INFO L225 Difference]: With dead ends: 9515 [2023-12-25 17:46:00,105 INFO L226 Difference]: Without dead ends: 5041 [2023-12-25 17:46:00,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:46:00,108 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:46:00,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2023-12-25 17:46:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 5033. [2023-12-25 17:46:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 5032 states have (on average 1.668322734499205) internal successors, (8395), 5032 states have internal predecessors, (8395), 0 states have call successors, (0), 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 17:46:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 8395 transitions. [2023-12-25 17:46:00,142 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 8395 transitions. Word has length 3135 [2023-12-25 17:46:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:00,143 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 8395 transitions. [2023-12-25 17:46:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:46:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 8395 transitions. [2023-12-25 17:46:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:46:00,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:00,198 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:00,230 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 17:46:00,413 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,SelfDestructingSolverStorable35 [2023-12-25 17:46:00,414 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:00,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1571354191, now seen corresponding path program 1 times [2023-12-25 17:46:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086661497] [2023-12-25 17:46:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:00,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526836974] [2023-12-25 17:46:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:00,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:00,703 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 17:46:00,712 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 17:46:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:03,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 14346 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:46:03,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:03,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:46:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086661497] [2023-12-25 17:46:03,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526836974] [2023-12-25 17:46:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526836974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:46:03,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:46:03,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:46:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320456223] [2023-12-25 17:46:03,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:03,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:46:03,913 INFO L87 Difference]: Start difference. First operand 5033 states and 8395 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:46:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:03,993 INFO L93 Difference]: Finished difference Result 9517 states and 15902 transitions. [2023-12-25 17:46:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:46:03,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:46:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:03,999 INFO L225 Difference]: With dead ends: 9517 [2023-12-25 17:46:04,000 INFO L226 Difference]: Without dead ends: 5042 [2023-12-25 17:46:04,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:46:04,003 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:46:04,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2023-12-25 17:46:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 5034. [2023-12-25 17:46:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 1.6681899463540633) internal successors, (8396), 5033 states have internal predecessors, (8396), 0 states have call successors, (0), 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 17:46:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 8396 transitions. [2023-12-25 17:46:04,049 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 8396 transitions. Word has length 3135 [2023-12-25 17:46:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:04,050 INFO L495 AbstractCegarLoop]: Abstraction has 5034 states and 8396 transitions. [2023-12-25 17:46:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:46:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 8396 transitions. [2023-12-25 17:46:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:46:04,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:04,104 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:04,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-25 17:46:04,311 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,SelfDestructingSolverStorable36 [2023-12-25 17:46:04,312 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:04,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1830122945, now seen corresponding path program 1 times [2023-12-25 17:46:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919000535] [2023-12-25 17:46:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:04,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:04,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066865958] [2023-12-25 17:46:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:04,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:04,549 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 17:46:04,550 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 17:46:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:07,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 14347 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:46:07,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:07,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:46:07,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:07,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919000535] [2023-12-25 17:46:07,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:07,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066865958] [2023-12-25 17:46:07,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066865958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:46:07,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:46:07,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:46:07,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589116234] [2023-12-25 17:46:07,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:07,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:07,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:46:07,770 INFO L87 Difference]: Start difference. First operand 5034 states and 8396 transitions. Second operand has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:46:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:07,847 INFO L93 Difference]: Finished difference Result 9519 states and 15904 transitions. [2023-12-25 17:46:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:46:07,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:46:07,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:07,852 INFO L225 Difference]: With dead ends: 9519 [2023-12-25 17:46:07,852 INFO L226 Difference]: Without dead ends: 5043 [2023-12-25 17:46:07,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3134 GetRequests, 3132 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 17:46:07,856 INFO L413 NwaCegarLoop]: 7698 mSDtfsCounter, 12 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23084 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 17:46:07,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23084 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2023-12-25 17:46:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 5035. [2023-12-25 17:46:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5034 states have (on average 1.668057210965435) internal successors, (8397), 5034 states have internal predecessors, (8397), 0 states have call successors, (0), 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 17:46:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 8397 transitions. [2023-12-25 17:46:07,893 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 8397 transitions. Word has length 3135 [2023-12-25 17:46:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:07,894 INFO L495 AbstractCegarLoop]: Abstraction has 5035 states and 8397 transitions. [2023-12-25 17:46:07,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 783.75) internal successors, (3135), 4 states have internal predecessors, (3135), 0 states have call successors, (0), 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 17:46:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 8397 transitions. [2023-12-25 17:46:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3136 [2023-12-25 17:46:07,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:07,965 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:08,025 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 17:46:08,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 17:46:08,185 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:08,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1051324339, now seen corresponding path program 1 times [2023-12-25 17:46:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467633879] [2023-12-25 17:46:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:08,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166630420] [2023-12-25 17:46:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:08,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:08,423 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 17:46:08,423 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 17:46:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:11,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 14348 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:11,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 4 proven. 284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:12,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-25 17:46:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467633879] [2023-12-25 17:46:12,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166630420] [2023-12-25 17:46:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166630420] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:12,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058129409] [2023-12-25 17:46:12,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:12,359 INFO L87 Difference]: Start difference. First operand 5035 states and 8397 transitions. Second operand has 4 states, 4 states have (on average 717.0) internal successors, (2868), 4 states have internal predecessors, (2868), 0 states have call successors, (0), 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 17:46:12,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:12,482 INFO L93 Difference]: Finished difference Result 13985 states and 23380 transitions. [2023-12-25 17:46:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 717.0) internal successors, (2868), 4 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3135 [2023-12-25 17:46:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:12,491 INFO L225 Difference]: With dead ends: 13985 [2023-12-25 17:46:12,491 INFO L226 Difference]: Without dead ends: 9508 [2023-12-25 17:46:12,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6269 GetRequests, 6259 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:12,495 INFO L413 NwaCegarLoop]: 8377 mSDtfsCounter, 7471 mSDsluCounter, 16066 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7471 SdHoareTripleChecker+Valid, 24443 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 17:46:12,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7471 Valid, 24443 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9508 states. [2023-12-25 17:46:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9508 to 5035. [2023-12-25 17:46:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5034 states have (on average 1.668057210965435) internal successors, (8397), 5034 states have internal predecessors, (8397), 0 states have call successors, (0), 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 17:46:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 8397 transitions. [2023-12-25 17:46:12,544 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 8397 transitions. Word has length 3135 [2023-12-25 17:46:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:12,545 INFO L495 AbstractCegarLoop]: Abstraction has 5035 states and 8397 transitions. [2023-12-25 17:46:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 717.0) internal successors, (2868), 4 states have internal predecessors, (2868), 0 states have call successors, (0), 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 17:46:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 8397 transitions. [2023-12-25 17:46:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3137 [2023-12-25 17:46:12,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:12,601 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:12,636 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 17:46:12,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 17:46:12,817 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:12,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1879388151, now seen corresponding path program 1 times [2023-12-25 17:46:12,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:12,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115865289] [2023-12-25 17:46:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:13,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:13,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50341859] [2023-12-25 17:46:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:13,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:13,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:13,028 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 17:46:13,045 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 17:46:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:16,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 14351 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:16,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:16,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-25 17:46:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115865289] [2023-12-25 17:46:16,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50341859] [2023-12-25 17:46:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50341859] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:16,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369934269] [2023-12-25 17:46:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:16,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:16,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:16,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:16,737 INFO L87 Difference]: Start difference. First operand 5035 states and 8397 transitions. Second operand has 4 states, 4 states have (on average 717.75) internal successors, (2871), 4 states have internal predecessors, (2871), 0 states have call successors, (0), 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 17:46:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:16,860 INFO L93 Difference]: Finished difference Result 13987 states and 23382 transitions. [2023-12-25 17:46:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 717.75) internal successors, (2871), 4 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3136 [2023-12-25 17:46:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:16,871 INFO L225 Difference]: With dead ends: 13987 [2023-12-25 17:46:16,871 INFO L226 Difference]: Without dead ends: 9507 [2023-12-25 17:46:16,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6271 GetRequests, 6261 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:16,877 INFO L413 NwaCegarLoop]: 8372 mSDtfsCounter, 7468 mSDsluCounter, 16061 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7468 SdHoareTripleChecker+Valid, 24433 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 17:46:16,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7468 Valid, 24433 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9507 states. [2023-12-25 17:46:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9507 to 5037. [2023-12-25 17:46:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5037 states, 5036 states have (on average 1.6677918983320095) internal successors, (8399), 5036 states have internal predecessors, (8399), 0 states have call successors, (0), 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 17:46:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5037 states to 5037 states and 8399 transitions. [2023-12-25 17:46:16,940 INFO L78 Accepts]: Start accepts. Automaton has 5037 states and 8399 transitions. Word has length 3136 [2023-12-25 17:46:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:16,942 INFO L495 AbstractCegarLoop]: Abstraction has 5037 states and 8399 transitions. [2023-12-25 17:46:16,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 717.75) internal successors, (2871), 4 states have internal predecessors, (2871), 0 states have call successors, (0), 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 17:46:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5037 states and 8399 transitions. [2023-12-25 17:46:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3138 [2023-12-25 17:46:16,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:16,996 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:17,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 17:46:17,207 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,SelfDestructingSolverStorable39 [2023-12-25 17:46:17,208 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:17,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1669708557, now seen corresponding path program 1 times [2023-12-25 17:46:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230409349] [2023-12-25 17:46:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:17,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365542351] [2023-12-25 17:46:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:17,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:17,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:17,612 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 17:46:17,614 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 17:46:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:20,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 14354 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:20,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 8 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:21,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-25 17:46:21,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:21,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230409349] [2023-12-25 17:46:21,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:21,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365542351] [2023-12-25 17:46:21,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365542351] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:21,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:21,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:21,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873939924] [2023-12-25 17:46:21,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:21,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:21,581 INFO L87 Difference]: Start difference. First operand 5037 states and 8399 transitions. Second operand has 4 states, 4 states have (on average 718.5) internal successors, (2874), 4 states have internal predecessors, (2874), 0 states have call successors, (0), 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 17:46:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:21,728 INFO L93 Difference]: Finished difference Result 13993 states and 23388 transitions. [2023-12-25 17:46:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:21,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 718.5) internal successors, (2874), 4 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3137 [2023-12-25 17:46:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:21,741 INFO L225 Difference]: With dead ends: 13993 [2023-12-25 17:46:21,741 INFO L226 Difference]: Without dead ends: 9508 [2023-12-25 17:46:21,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6273 GetRequests, 6263 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:21,745 INFO L413 NwaCegarLoop]: 8367 mSDtfsCounter, 7465 mSDsluCounter, 16056 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7465 SdHoareTripleChecker+Valid, 24423 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 17:46:21,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7465 Valid, 24423 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9508 states. [2023-12-25 17:46:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9508 to 5039. [2023-12-25 17:46:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 5038 states have (on average 1.6675267963477571) internal successors, (8401), 5038 states have internal predecessors, (8401), 0 states have call successors, (0), 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 17:46:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 8401 transitions. [2023-12-25 17:46:21,809 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 8401 transitions. Word has length 3137 [2023-12-25 17:46:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:21,810 INFO L495 AbstractCegarLoop]: Abstraction has 5039 states and 8401 transitions. [2023-12-25 17:46:21,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 718.5) internal successors, (2874), 4 states have internal predecessors, (2874), 0 states have call successors, (0), 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 17:46:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 8401 transitions. [2023-12-25 17:46:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3139 [2023-12-25 17:46:21,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:21,868 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:21,917 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 17:46:22,093 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,SelfDestructingSolverStorable40 [2023-12-25 17:46:22,094 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:22,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash -238653009, now seen corresponding path program 1 times [2023-12-25 17:46:22,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:22,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090324793] [2023-12-25 17:46:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:22,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281173540] [2023-12-25 17:46:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:22,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:22,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:22,332 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 17:46:22,352 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 17:46:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:25,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 14357 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:25,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 10 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:26,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-25 17:46:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090324793] [2023-12-25 17:46:26,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281173540] [2023-12-25 17:46:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281173540] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:26,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985704165] [2023-12-25 17:46:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:26,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:26,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:26,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:26,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:26,245 INFO L87 Difference]: Start difference. First operand 5039 states and 8401 transitions. Second operand has 4 states, 4 states have (on average 719.25) internal successors, (2877), 4 states have internal predecessors, (2877), 0 states have call successors, (0), 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 17:46:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:26,359 INFO L93 Difference]: Finished difference Result 13999 states and 23394 transitions. [2023-12-25 17:46:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:26,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 719.25) internal successors, (2877), 4 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3138 [2023-12-25 17:46:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:26,369 INFO L225 Difference]: With dead ends: 13999 [2023-12-25 17:46:26,369 INFO L226 Difference]: Without dead ends: 9509 [2023-12-25 17:46:26,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6275 GetRequests, 6265 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:26,376 INFO L413 NwaCegarLoop]: 8362 mSDtfsCounter, 7462 mSDsluCounter, 16051 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7462 SdHoareTripleChecker+Valid, 24413 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 17:46:26,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7462 Valid, 24413 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2023-12-25 17:46:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 5041. [2023-12-25 17:46:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5041 states, 5040 states have (on average 1.6672619047619048) internal successors, (8403), 5040 states have internal predecessors, (8403), 0 states have call successors, (0), 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 17:46:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5041 states to 5041 states and 8403 transitions. [2023-12-25 17:46:26,430 INFO L78 Accepts]: Start accepts. Automaton has 5041 states and 8403 transitions. Word has length 3138 [2023-12-25 17:46:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:26,431 INFO L495 AbstractCegarLoop]: Abstraction has 5041 states and 8403 transitions. [2023-12-25 17:46:26,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 719.25) internal successors, (2877), 4 states have internal predecessors, (2877), 0 states have call successors, (0), 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 17:46:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5041 states and 8403 transitions. [2023-12-25 17:46:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3140 [2023-12-25 17:46:26,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:26,485 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:26,528 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 17:46:26,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:26,713 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:26,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash -178210839, now seen corresponding path program 1 times [2023-12-25 17:46:26,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:26,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819147051] [2023-12-25 17:46:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:27,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758563326] [2023-12-25 17:46:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:27,011 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 17:46:27,012 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 17:46:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:30,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 14361 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:30,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:30,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-25 17:46:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819147051] [2023-12-25 17:46:30,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758563326] [2023-12-25 17:46:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758563326] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084526689] [2023-12-25 17:46:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:30,814 INFO L87 Difference]: Start difference. First operand 5041 states and 8403 transitions. Second operand has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 17:46:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:30,956 INFO L93 Difference]: Finished difference Result 14005 states and 23400 transitions. [2023-12-25 17:46:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3139 [2023-12-25 17:46:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:30,968 INFO L225 Difference]: With dead ends: 14005 [2023-12-25 17:46:30,968 INFO L226 Difference]: Without dead ends: 9510 [2023-12-25 17:46:31,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6277 GetRequests, 6267 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:31,114 INFO L413 NwaCegarLoop]: 8357 mSDtfsCounter, 7459 mSDsluCounter, 16046 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7459 SdHoareTripleChecker+Valid, 24403 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 17:46:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7459 Valid, 24403 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2023-12-25 17:46:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 5043. [2023-12-25 17:46:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5043 states, 5042 states have (on average 1.6669972233240777) internal successors, (8405), 5042 states have internal predecessors, (8405), 0 states have call successors, (0), 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 17:46:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5043 states to 5043 states and 8405 transitions. [2023-12-25 17:46:31,174 INFO L78 Accepts]: Start accepts. Automaton has 5043 states and 8405 transitions. Word has length 3139 [2023-12-25 17:46:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:31,176 INFO L495 AbstractCegarLoop]: Abstraction has 5043 states and 8405 transitions. [2023-12-25 17:46:31,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 17:46:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5043 states and 8405 transitions. [2023-12-25 17:46:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3141 [2023-12-25 17:46:31,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:31,240 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:31,284 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 17:46:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:31,457 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:31,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:31,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1257363671, now seen corresponding path program 1 times [2023-12-25 17:46:31,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:31,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155624836] [2023-12-25 17:46:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:31,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56858675] [2023-12-25 17:46:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:31,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:31,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:31,721 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 17:46:31,724 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 17:46:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:35,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 14364 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:35,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 14 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:35,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-25 17:46:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155624836] [2023-12-25 17:46:35,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56858675] [2023-12-25 17:46:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56858675] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725282944] [2023-12-25 17:46:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:35,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:35,926 INFO L87 Difference]: Start difference. First operand 5043 states and 8405 transitions. Second operand has 4 states, 4 states have (on average 720.75) internal successors, (2883), 4 states have internal predecessors, (2883), 0 states have call successors, (0), 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 17:46:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:36,075 INFO L93 Difference]: Finished difference Result 14011 states and 23406 transitions. [2023-12-25 17:46:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:36,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 720.75) internal successors, (2883), 4 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3140 [2023-12-25 17:46:36,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:36,088 INFO L225 Difference]: With dead ends: 14011 [2023-12-25 17:46:36,088 INFO L226 Difference]: Without dead ends: 9511 [2023-12-25 17:46:36,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6279 GetRequests, 6269 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:36,094 INFO L413 NwaCegarLoop]: 8352 mSDtfsCounter, 7456 mSDsluCounter, 16041 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7456 SdHoareTripleChecker+Valid, 24393 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 17:46:36,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7456 Valid, 24393 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9511 states. [2023-12-25 17:46:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9511 to 5045. [2023-12-25 17:46:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 5044 states have (on average 1.6667327517842982) internal successors, (8407), 5044 states have internal predecessors, (8407), 0 states have call successors, (0), 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 17:46:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 8407 transitions. [2023-12-25 17:46:36,154 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 8407 transitions. Word has length 3140 [2023-12-25 17:46:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:36,155 INFO L495 AbstractCegarLoop]: Abstraction has 5045 states and 8407 transitions. [2023-12-25 17:46:36,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 720.75) internal successors, (2883), 4 states have internal predecessors, (2883), 0 states have call successors, (0), 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 17:46:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 8407 transitions. [2023-12-25 17:46:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3142 [2023-12-25 17:46:36,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:36,209 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:36,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-25 17:46:36,423 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,SelfDestructingSolverStorable43 [2023-12-25 17:46:36,424 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:36,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:36,425 INFO L85 PathProgramCache]: Analyzing trace with hash 997621571, now seen corresponding path program 1 times [2023-12-25 17:46:36,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:36,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883714209] [2023-12-25 17:46:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:36,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:36,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:36,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189215393] [2023-12-25 17:46:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:36,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:36,655 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 17:46:36,657 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 17:46:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:39,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 14367 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:39,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:40,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-25 17:46:40,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883714209] [2023-12-25 17:46:40,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189215393] [2023-12-25 17:46:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189215393] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150859110] [2023-12-25 17:46:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:40,402 INFO L87 Difference]: Start difference. First operand 5045 states and 8407 transitions. Second operand has 4 states, 4 states have (on average 721.5) internal successors, (2886), 4 states have internal predecessors, (2886), 0 states have call successors, (0), 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 17:46:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:40,521 INFO L93 Difference]: Finished difference Result 14017 states and 23412 transitions. [2023-12-25 17:46:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 721.5) internal successors, (2886), 4 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3141 [2023-12-25 17:46:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:40,531 INFO L225 Difference]: With dead ends: 14017 [2023-12-25 17:46:40,531 INFO L226 Difference]: Without dead ends: 9512 [2023-12-25 17:46:40,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6281 GetRequests, 6271 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:40,536 INFO L413 NwaCegarLoop]: 8347 mSDtfsCounter, 7453 mSDsluCounter, 16036 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7453 SdHoareTripleChecker+Valid, 24383 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 17:46:40,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7453 Valid, 24383 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2023-12-25 17:46:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 5047. [2023-12-25 17:46:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5047 states, 5046 states have (on average 1.6664684898929845) internal successors, (8409), 5046 states have internal predecessors, (8409), 0 states have call successors, (0), 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 17:46:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5047 states to 5047 states and 8409 transitions. [2023-12-25 17:46:40,592 INFO L78 Accepts]: Start accepts. Automaton has 5047 states and 8409 transitions. Word has length 3141 [2023-12-25 17:46:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 5047 states and 8409 transitions. [2023-12-25 17:46:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 721.5) internal successors, (2886), 4 states have internal predecessors, (2886), 0 states have call successors, (0), 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 17:46:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5047 states and 8409 transitions. [2023-12-25 17:46:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3143 [2023-12-25 17:46:40,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:40,646 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:40,687 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 17:46:40,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:40,872 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:40,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:40,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1022468483, now seen corresponding path program 1 times [2023-12-25 17:46:40,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:40,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269088326] [2023-12-25 17:46:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:40,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:41,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:41,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253972518] [2023-12-25 17:46:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:41,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:41,148 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 17:46:41,168 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 17:46:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:44,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 14370 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:44,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 18 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:44,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-25 17:46:44,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:44,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269088326] [2023-12-25 17:46:44,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:44,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253972518] [2023-12-25 17:46:44,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253972518] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:44,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:44,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:44,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731365933] [2023-12-25 17:46:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:44,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:44,922 INFO L87 Difference]: Start difference. First operand 5047 states and 8409 transitions. Second operand has 4 states, 4 states have (on average 722.25) internal successors, (2889), 4 states have internal predecessors, (2889), 0 states have call successors, (0), 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 17:46:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:45,042 INFO L93 Difference]: Finished difference Result 14023 states and 23418 transitions. [2023-12-25 17:46:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 722.25) internal successors, (2889), 4 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3142 [2023-12-25 17:46:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:45,052 INFO L225 Difference]: With dead ends: 14023 [2023-12-25 17:46:45,052 INFO L226 Difference]: Without dead ends: 9513 [2023-12-25 17:46:45,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6283 GetRequests, 6273 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:45,056 INFO L413 NwaCegarLoop]: 8342 mSDtfsCounter, 7450 mSDsluCounter, 16031 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7450 SdHoareTripleChecker+Valid, 24373 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 17:46:45,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7450 Valid, 24373 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9513 states. [2023-12-25 17:46:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9513 to 5049. [2023-12-25 17:46:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 5048 states have (on average 1.6662044374009508) internal successors, (8411), 5048 states have internal predecessors, (8411), 0 states have call successors, (0), 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 17:46:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 8411 transitions. [2023-12-25 17:46:45,105 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 8411 transitions. Word has length 3142 [2023-12-25 17:46:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:45,107 INFO L495 AbstractCegarLoop]: Abstraction has 5049 states and 8411 transitions. [2023-12-25 17:46:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 722.25) internal successors, (2889), 4 states have internal predecessors, (2889), 0 states have call successors, (0), 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 17:46:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 8411 transitions. [2023-12-25 17:46:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3144 [2023-12-25 17:46:45,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:45,222 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:45,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-25 17:46:45,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:45,446 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:45,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1125287199, now seen corresponding path program 1 times [2023-12-25 17:46:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468936279] [2023-12-25 17:46:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:45,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:45,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286199550] [2023-12-25 17:46:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:45,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:45,656 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 17:46:45,679 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 17:46:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:48,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 14374 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:48,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 20 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:49,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-12-25 17:46:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468936279] [2023-12-25 17:46:49,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286199550] [2023-12-25 17:46:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286199550] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:49,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:49,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:49,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089872504] [2023-12-25 17:46:49,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:49,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:49,433 INFO L87 Difference]: Start difference. First operand 5049 states and 8411 transitions. Second operand has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 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 17:46:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:49,558 INFO L93 Difference]: Finished difference Result 14029 states and 23424 transitions. [2023-12-25 17:46:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:49,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3143 [2023-12-25 17:46:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:49,570 INFO L225 Difference]: With dead ends: 14029 [2023-12-25 17:46:49,571 INFO L226 Difference]: Without dead ends: 9514 [2023-12-25 17:46:49,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6285 GetRequests, 6275 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:49,576 INFO L413 NwaCegarLoop]: 8337 mSDtfsCounter, 7447 mSDsluCounter, 16026 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7447 SdHoareTripleChecker+Valid, 24363 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 17:46:49,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7447 Valid, 24363 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9514 states. [2023-12-25 17:46:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 5051. [2023-12-25 17:46:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5050 states have (on average 1.6659405940594059) internal successors, (8413), 5050 states have internal predecessors, (8413), 0 states have call successors, (0), 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 17:46:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 8413 transitions. [2023-12-25 17:46:49,634 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 8413 transitions. Word has length 3143 [2023-12-25 17:46:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:49,635 INFO L495 AbstractCegarLoop]: Abstraction has 5051 states and 8413 transitions. [2023-12-25 17:46:49,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 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 17:46:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 8413 transitions. [2023-12-25 17:46:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3145 [2023-12-25 17:46:49,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:49,689 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:49,729 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 17:46:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:49,905 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:49,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1849505445, now seen corresponding path program 1 times [2023-12-25 17:46:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:49,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73149649] [2023-12-25 17:46:49,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:50,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943918773] [2023-12-25 17:46:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:50,162 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 17:46:50,164 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 17:46:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:53,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 14377 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:53,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 22 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:53,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-25 17:46:53,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73149649] [2023-12-25 17:46:53,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943918773] [2023-12-25 17:46:53,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943918773] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:53,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195534556] [2023-12-25 17:46:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:53,944 INFO L87 Difference]: Start difference. First operand 5051 states and 8413 transitions. Second operand has 4 states, 4 states have (on average 723.75) internal successors, (2895), 4 states have internal predecessors, (2895), 0 states have call successors, (0), 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 17:46:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:54,061 INFO L93 Difference]: Finished difference Result 14035 states and 23430 transitions. [2023-12-25 17:46:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 723.75) internal successors, (2895), 4 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3144 [2023-12-25 17:46:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:54,073 INFO L225 Difference]: With dead ends: 14035 [2023-12-25 17:46:54,073 INFO L226 Difference]: Without dead ends: 9515 [2023-12-25 17:46:54,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6287 GetRequests, 6277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:54,079 INFO L413 NwaCegarLoop]: 8332 mSDtfsCounter, 7444 mSDsluCounter, 16021 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7444 SdHoareTripleChecker+Valid, 24353 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 17:46:54,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7444 Valid, 24353 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2023-12-25 17:46:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 5053. [2023-12-25 17:46:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 5052 states have (on average 1.6656769596199525) internal successors, (8415), 5052 states have internal predecessors, (8415), 0 states have call successors, (0), 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 17:46:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 8415 transitions. [2023-12-25 17:46:54,139 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 8415 transitions. Word has length 3144 [2023-12-25 17:46:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:54,140 INFO L495 AbstractCegarLoop]: Abstraction has 5053 states and 8415 transitions. [2023-12-25 17:46:54,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 723.75) internal successors, (2895), 4 states have internal predecessors, (2895), 0 states have call successors, (0), 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 17:46:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 8415 transitions. [2023-12-25 17:46:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3146 [2023-12-25 17:46:54,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:54,196 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:54,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 17:46:54,424 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,SelfDestructingSolverStorable47 [2023-12-25 17:46:54,424 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:54,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash -722024327, now seen corresponding path program 1 times [2023-12-25 17:46:54,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835565510] [2023-12-25 17:46:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:54,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:54,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498510956] [2023-12-25 17:46:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:54,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:54,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:54,643 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 17:46:54,645 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 17:46:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:46:58,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 14380 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:46:58,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:46:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:46:58,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:46:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-25 17:46:58,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:46:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835565510] [2023-12-25 17:46:58,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:46:58,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498510956] [2023-12-25 17:46:58,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498510956] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:46:58,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:46:58,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:46:58,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659567649] [2023-12-25 17:46:58,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:46:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:46:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:46:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:46:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:46:58,608 INFO L87 Difference]: Start difference. First operand 5053 states and 8415 transitions. Second operand has 4 states, 4 states have (on average 724.5) internal successors, (2898), 4 states have internal predecessors, (2898), 0 states have call successors, (0), 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 17:46:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:46:58,763 INFO L93 Difference]: Finished difference Result 14041 states and 23436 transitions. [2023-12-25 17:46:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:46:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 724.5) internal successors, (2898), 4 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3145 [2023-12-25 17:46:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:46:58,773 INFO L225 Difference]: With dead ends: 14041 [2023-12-25 17:46:58,773 INFO L226 Difference]: Without dead ends: 9516 [2023-12-25 17:46:58,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6289 GetRequests, 6279 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:46:58,778 INFO L413 NwaCegarLoop]: 8327 mSDtfsCounter, 7441 mSDsluCounter, 16016 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7441 SdHoareTripleChecker+Valid, 24343 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 17:46:58,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7441 Valid, 24343 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:46:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9516 states. [2023-12-25 17:46:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9516 to 5055. [2023-12-25 17:46:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5054 states have (on average 1.6654135338345866) internal successors, (8417), 5054 states have internal predecessors, (8417), 0 states have call successors, (0), 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 17:46:58,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 8417 transitions. [2023-12-25 17:46:58,829 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 8417 transitions. Word has length 3145 [2023-12-25 17:46:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:46:58,830 INFO L495 AbstractCegarLoop]: Abstraction has 5055 states and 8417 transitions. [2023-12-25 17:46:58,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 724.5) internal successors, (2898), 4 states have internal predecessors, (2898), 0 states have call successors, (0), 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 17:46:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 8417 transitions. [2023-12-25 17:46:58,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3147 [2023-12-25 17:46:58,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:46:58,882 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:58,920 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 17:46:59,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-25 17:46:59,109 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:46:59,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:46:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash 781590603, now seen corresponding path program 1 times [2023-12-25 17:46:59,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:46:59,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427804841] [2023-12-25 17:46:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:46:59,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:46:59,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705378373] [2023-12-25 17:46:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:46:59,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:59,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:46:59,312 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 17:46:59,314 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 17:47:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:02,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 14383 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:47:02,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 26 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:03,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-25 17:47:03,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427804841] [2023-12-25 17:47:03,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705378373] [2023-12-25 17:47:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705378373] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:03,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:03,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:47:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250611542] [2023-12-25 17:47:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:47:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:03,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:47:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:47:03,254 INFO L87 Difference]: Start difference. First operand 5055 states and 8417 transitions. Second operand has 5 states, 5 states have (on average 580.2) internal successors, (2901), 5 states have internal predecessors, (2901), 0 states have call successors, (0), 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 17:47:03,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:03,468 INFO L93 Difference]: Finished difference Result 18573 states and 31004 transitions. [2023-12-25 17:47:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:47:03,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 580.2) internal successors, (2901), 5 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3146 [2023-12-25 17:47:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:03,482 INFO L225 Difference]: With dead ends: 18573 [2023-12-25 17:47:03,483 INFO L226 Difference]: Without dead ends: 14043 [2023-12-25 17:47:03,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6292 GetRequests, 6279 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:47:03,489 INFO L413 NwaCegarLoop]: 15797 mSDtfsCounter, 14913 mSDsluCounter, 39277 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14913 SdHoareTripleChecker+Valid, 55074 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:47:03,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14913 Valid, 55074 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14043 states. [2023-12-25 17:47:03,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14043 to 5057. [2023-12-25 17:47:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5056 states have (on average 1.6651503164556962) internal successors, (8419), 5056 states have internal predecessors, (8419), 0 states have call successors, (0), 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 17:47:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 8419 transitions. [2023-12-25 17:47:03,557 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 8419 transitions. Word has length 3146 [2023-12-25 17:47:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:03,559 INFO L495 AbstractCegarLoop]: Abstraction has 5057 states and 8419 transitions. [2023-12-25 17:47:03,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 580.2) internal successors, (2901), 5 states have internal predecessors, (2901), 0 states have call successors, (0), 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 17:47:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 8419 transitions. [2023-12-25 17:47:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3148 [2023-12-25 17:47:03,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:03,614 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:03,656 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 17:47:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-25 17:47:03,840 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:03,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash -534980779, now seen corresponding path program 1 times [2023-12-25 17:47:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109857023] [2023-12-25 17:47:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:04,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:04,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313978007] [2023-12-25 17:47:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:04,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:04,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:04,053 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 17:47:04,055 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 17:47:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:07,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 14387 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:07,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 28 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:08,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-25 17:47:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109857023] [2023-12-25 17:47:08,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313978007] [2023-12-25 17:47:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313978007] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:08,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:08,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037955769] [2023-12-25 17:47:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:08,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:08,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:08,094 INFO L87 Difference]: Start difference. First operand 5057 states and 8419 transitions. Second operand has 4 states, 4 states have (on average 726.0) internal successors, (2904), 4 states have internal predecessors, (2904), 0 states have call successors, (0), 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 17:47:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:08,216 INFO L93 Difference]: Finished difference Result 14053 states and 23448 transitions. [2023-12-25 17:47:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:08,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 726.0) internal successors, (2904), 4 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3147 [2023-12-25 17:47:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:08,227 INFO L225 Difference]: With dead ends: 14053 [2023-12-25 17:47:08,227 INFO L226 Difference]: Without dead ends: 9518 [2023-12-25 17:47:08,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6293 GetRequests, 6283 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:08,232 INFO L413 NwaCegarLoop]: 8317 mSDtfsCounter, 7435 mSDsluCounter, 16006 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7435 SdHoareTripleChecker+Valid, 24323 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 17:47:08,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7435 Valid, 24323 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9518 states. [2023-12-25 17:47:08,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9518 to 5059. [2023-12-25 17:47:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 1.6648873072360617) internal successors, (8421), 5058 states have internal predecessors, (8421), 0 states have call successors, (0), 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 17:47:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 8421 transitions. [2023-12-25 17:47:08,330 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 8421 transitions. Word has length 3147 [2023-12-25 17:47:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 5059 states and 8421 transitions. [2023-12-25 17:47:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 726.0) internal successors, (2904), 4 states have internal predecessors, (2904), 0 states have call successors, (0), 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 17:47:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 8421 transitions. [2023-12-25 17:47:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3149 [2023-12-25 17:47:08,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:08,386 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:08,430 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 17:47:08,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:08,602 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:08,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 183003507, now seen corresponding path program 1 times [2023-12-25 17:47:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:08,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892322890] [2023-12-25 17:47:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:08,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:08,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302923256] [2023-12-25 17:47:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:08,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:08,864 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 17:47:08,867 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 17:47:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:12,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 14390 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:12,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 30 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:12,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-25 17:47:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892322890] [2023-12-25 17:47:12,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302923256] [2023-12-25 17:47:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302923256] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:12,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:12,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:12,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292622731] [2023-12-25 17:47:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:12,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:12,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:12,647 INFO L87 Difference]: Start difference. First operand 5059 states and 8421 transitions. Second operand has 4 states, 4 states have (on average 726.75) internal successors, (2907), 4 states have internal predecessors, (2907), 0 states have call successors, (0), 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 17:47:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:12,766 INFO L93 Difference]: Finished difference Result 14059 states and 23454 transitions. [2023-12-25 17:47:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 726.75) internal successors, (2907), 4 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3148 [2023-12-25 17:47:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:12,776 INFO L225 Difference]: With dead ends: 14059 [2023-12-25 17:47:12,776 INFO L226 Difference]: Without dead ends: 9519 [2023-12-25 17:47:12,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6295 GetRequests, 6285 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:12,780 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 7432 mSDsluCounter, 16001 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7432 SdHoareTripleChecker+Valid, 24313 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 17:47:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7432 Valid, 24313 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9519 states. [2023-12-25 17:47:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9519 to 5061. [2023-12-25 17:47:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 5060 states have (on average 1.6646245059288538) internal successors, (8423), 5060 states have internal predecessors, (8423), 0 states have call successors, (0), 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 17:47:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 8423 transitions. [2023-12-25 17:47:12,831 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 8423 transitions. Word has length 3148 [2023-12-25 17:47:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 5061 states and 8423 transitions. [2023-12-25 17:47:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 726.75) internal successors, (2907), 4 states have internal predecessors, (2907), 0 states have call successors, (0), 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 17:47:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 8423 transitions. [2023-12-25 17:47:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3150 [2023-12-25 17:47:12,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:12,885 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:12,924 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 17:47:13,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:13,113 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:13,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1302063441, now seen corresponding path program 1 times [2023-12-25 17:47:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504612950] [2023-12-25 17:47:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:13,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506106766] [2023-12-25 17:47:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:13,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:13,314 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 17:47:13,337 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 17:47:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:16,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 14393 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:16,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:17,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-25 17:47:17,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:17,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504612950] [2023-12-25 17:47:17,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:17,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506106766] [2023-12-25 17:47:17,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506106766] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:17,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:17,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:17,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518470740] [2023-12-25 17:47:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:17,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:17,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:17,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:17,263 INFO L87 Difference]: Start difference. First operand 5061 states and 8423 transitions. Second operand has 4 states, 4 states have (on average 727.5) internal successors, (2910), 4 states have internal predecessors, (2910), 0 states have call successors, (0), 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 17:47:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:17,385 INFO L93 Difference]: Finished difference Result 14065 states and 23460 transitions. [2023-12-25 17:47:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:17,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 727.5) internal successors, (2910), 4 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3149 [2023-12-25 17:47:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:17,395 INFO L225 Difference]: With dead ends: 14065 [2023-12-25 17:47:17,395 INFO L226 Difference]: Without dead ends: 9520 [2023-12-25 17:47:17,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6297 GetRequests, 6287 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:17,400 INFO L413 NwaCegarLoop]: 8307 mSDtfsCounter, 7429 mSDsluCounter, 15996 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7429 SdHoareTripleChecker+Valid, 24303 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 17:47:17,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7429 Valid, 24303 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:17,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9520 states. [2023-12-25 17:47:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9520 to 5063. [2023-12-25 17:47:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5063 states, 5062 states have (on average 1.6643619122876334) internal successors, (8425), 5062 states have internal predecessors, (8425), 0 states have call successors, (0), 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 17:47:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5063 states to 5063 states and 8425 transitions. [2023-12-25 17:47:17,452 INFO L78 Accepts]: Start accepts. Automaton has 5063 states and 8425 transitions. Word has length 3149 [2023-12-25 17:47:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:17,453 INFO L495 AbstractCegarLoop]: Abstraction has 5063 states and 8425 transitions. [2023-12-25 17:47:17,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 727.5) internal successors, (2910), 4 states have internal predecessors, (2910), 0 states have call successors, (0), 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 17:47:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5063 states and 8425 transitions. [2023-12-25 17:47:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3151 [2023-12-25 17:47:17,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:17,506 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:17,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-25 17:47:17,720 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,SelfDestructingSolverStorable52 [2023-12-25 17:47:17,720 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:17,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:17,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1399404313, now seen corresponding path program 1 times [2023-12-25 17:47:17,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:17,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022577200] [2023-12-25 17:47:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:17,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:17,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20057418] [2023-12-25 17:47:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:17,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:17,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:17,928 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 17:47:17,930 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 17:47:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:21,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 14396 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:21,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 34 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:21,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-25 17:47:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022577200] [2023-12-25 17:47:21,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20057418] [2023-12-25 17:47:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20057418] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:21,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32513778] [2023-12-25 17:47:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:21,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:21,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:21,835 INFO L87 Difference]: Start difference. First operand 5063 states and 8425 transitions. Second operand has 4 states, 4 states have (on average 728.25) internal successors, (2913), 4 states have internal predecessors, (2913), 0 states have call successors, (0), 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 17:47:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:21,999 INFO L93 Difference]: Finished difference Result 14071 states and 23466 transitions. [2023-12-25 17:47:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 728.25) internal successors, (2913), 4 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3150 [2023-12-25 17:47:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:22,013 INFO L225 Difference]: With dead ends: 14071 [2023-12-25 17:47:22,013 INFO L226 Difference]: Without dead ends: 9521 [2023-12-25 17:47:22,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6299 GetRequests, 6289 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:22,025 INFO L413 NwaCegarLoop]: 8302 mSDtfsCounter, 7426 mSDsluCounter, 15991 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7426 SdHoareTripleChecker+Valid, 24293 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 17:47:22,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7426 Valid, 24293 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9521 states. [2023-12-25 17:47:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 5065. [2023-12-25 17:47:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5065 states, 5064 states have (on average 1.6640995260663507) internal successors, (8427), 5064 states have internal predecessors, (8427), 0 states have call successors, (0), 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 17:47:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 8427 transitions. [2023-12-25 17:47:22,108 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 8427 transitions. Word has length 3150 [2023-12-25 17:47:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 5065 states and 8427 transitions. [2023-12-25 17:47:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 728.25) internal successors, (2913), 4 states have internal predecessors, (2913), 0 states have call successors, (0), 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 17:47:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 8427 transitions. [2023-12-25 17:47:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3152 [2023-12-25 17:47:22,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:22,242 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:22,287 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 17:47:22,442 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,SelfDestructingSolverStorable53 [2023-12-25 17:47:22,443 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:22,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1042099851, now seen corresponding path program 1 times [2023-12-25 17:47:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:22,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712346395] [2023-12-25 17:47:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:22,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070647755] [2023-12-25 17:47:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:22,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:22,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:22,681 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 17:47:22,685 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 17:47:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:25,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 14400 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:26,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 36 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:26,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-25 17:47:26,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712346395] [2023-12-25 17:47:26,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070647755] [2023-12-25 17:47:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070647755] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:26,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576849869] [2023-12-25 17:47:26,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:26,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:26,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:26,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:26,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:26,527 INFO L87 Difference]: Start difference. First operand 5065 states and 8427 transitions. Second operand has 4 states, 4 states have (on average 729.0) internal successors, (2916), 4 states have internal predecessors, (2916), 0 states have call successors, (0), 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 17:47:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:26,651 INFO L93 Difference]: Finished difference Result 14077 states and 23472 transitions. [2023-12-25 17:47:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.0) internal successors, (2916), 4 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3151 [2023-12-25 17:47:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:26,662 INFO L225 Difference]: With dead ends: 14077 [2023-12-25 17:47:26,662 INFO L226 Difference]: Without dead ends: 9522 [2023-12-25 17:47:26,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6301 GetRequests, 6291 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:26,667 INFO L413 NwaCegarLoop]: 8297 mSDtfsCounter, 7423 mSDsluCounter, 15986 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7423 SdHoareTripleChecker+Valid, 24283 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 17:47:26,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7423 Valid, 24283 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9522 states. [2023-12-25 17:47:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9522 to 5067. [2023-12-25 17:47:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 5066 states have (on average 1.6638373470193446) internal successors, (8429), 5066 states have internal predecessors, (8429), 0 states have call successors, (0), 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 17:47:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 8429 transitions. [2023-12-25 17:47:26,727 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 8429 transitions. Word has length 3151 [2023-12-25 17:47:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:26,728 INFO L495 AbstractCegarLoop]: Abstraction has 5067 states and 8429 transitions. [2023-12-25 17:47:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.0) internal successors, (2916), 4 states have internal predecessors, (2916), 0 states have call successors, (0), 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 17:47:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 8429 transitions. [2023-12-25 17:47:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3153 [2023-12-25 17:47:26,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:26,781 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:26,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 17:47:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:27,004 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:27,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -750849727, now seen corresponding path program 1 times [2023-12-25 17:47:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651245389] [2023-12-25 17:47:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:27,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:27,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316524773] [2023-12-25 17:47:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:27,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:27,210 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 17:47:27,237 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 17:47:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:30,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 14403 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:30,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 38 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:30,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-25 17:47:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651245389] [2023-12-25 17:47:31,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316524773] [2023-12-25 17:47:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316524773] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:31,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:31,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37567733] [2023-12-25 17:47:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:31,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:31,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:31,015 INFO L87 Difference]: Start difference. First operand 5067 states and 8429 transitions. Second operand has 4 states, 4 states have (on average 729.75) internal successors, (2919), 4 states have internal predecessors, (2919), 0 states have call successors, (0), 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 17:47:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:31,132 INFO L93 Difference]: Finished difference Result 14083 states and 23478 transitions. [2023-12-25 17:47:31,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:31,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.75) internal successors, (2919), 4 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3152 [2023-12-25 17:47:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:31,142 INFO L225 Difference]: With dead ends: 14083 [2023-12-25 17:47:31,142 INFO L226 Difference]: Without dead ends: 9523 [2023-12-25 17:47:31,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6303 GetRequests, 6293 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:31,146 INFO L413 NwaCegarLoop]: 8292 mSDtfsCounter, 7420 mSDsluCounter, 15981 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7420 SdHoareTripleChecker+Valid, 24273 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 17:47:31,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7420 Valid, 24273 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2023-12-25 17:47:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5069. [2023-12-25 17:47:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 1.6635753749013418) internal successors, (8431), 5068 states have internal predecessors, (8431), 0 states have call successors, (0), 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 17:47:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 8431 transitions. [2023-12-25 17:47:31,282 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 8431 transitions. Word has length 3152 [2023-12-25 17:47:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:31,283 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 8431 transitions. [2023-12-25 17:47:31,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.75) internal successors, (2919), 4 states have internal predecessors, (2919), 0 states have call successors, (0), 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 17:47:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 8431 transitions. [2023-12-25 17:47:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3154 [2023-12-25 17:47:31,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:31,336 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:31,372 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 17:47:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:31,550 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:31,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1352930843, now seen corresponding path program 1 times [2023-12-25 17:47:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344290095] [2023-12-25 17:47:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:31,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363873221] [2023-12-25 17:47:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:31,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:31,798 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 17:47:31,800 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 17:47:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:35,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 14406 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:35,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 40 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:35,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-25 17:47:35,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344290095] [2023-12-25 17:47:35,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363873221] [2023-12-25 17:47:35,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363873221] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:35,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:35,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:35,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759170892] [2023-12-25 17:47:35,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:35,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:35,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:35,839 INFO L87 Difference]: Start difference. First operand 5069 states and 8431 transitions. Second operand has 4 states, 4 states have (on average 730.5) internal successors, (2922), 4 states have internal predecessors, (2922), 0 states have call successors, (0), 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 17:47:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:35,988 INFO L93 Difference]: Finished difference Result 14089 states and 23484 transitions. [2023-12-25 17:47:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 730.5) internal successors, (2922), 4 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3153 [2023-12-25 17:47:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:36,003 INFO L225 Difference]: With dead ends: 14089 [2023-12-25 17:47:36,003 INFO L226 Difference]: Without dead ends: 9524 [2023-12-25 17:47:36,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6305 GetRequests, 6295 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:36,010 INFO L413 NwaCegarLoop]: 8287 mSDtfsCounter, 7417 mSDsluCounter, 15976 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7417 SdHoareTripleChecker+Valid, 24263 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 17:47:36,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7417 Valid, 24263 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9524 states. [2023-12-25 17:47:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9524 to 5071. [2023-12-25 17:47:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5071 states, 5070 states have (on average 1.6633136094674557) internal successors, (8433), 5070 states have internal predecessors, (8433), 0 states have call successors, (0), 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 17:47:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5071 states to 5071 states and 8433 transitions. [2023-12-25 17:47:36,089 INFO L78 Accepts]: Start accepts. Automaton has 5071 states and 8433 transitions. Word has length 3153 [2023-12-25 17:47:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:36,091 INFO L495 AbstractCegarLoop]: Abstraction has 5071 states and 8433 transitions. [2023-12-25 17:47:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 730.5) internal successors, (2922), 4 states have internal predecessors, (2922), 0 states have call successors, (0), 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 17:47:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5071 states and 8433 transitions. [2023-12-25 17:47:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3155 [2023-12-25 17:47:36,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:36,154 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, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:36,209 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 17:47:36,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:36,356 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1372791527, now seen corresponding path program 1 times [2023-12-25 17:47:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:36,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512624748] [2023-12-25 17:47:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:36,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:36,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:36,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303613925] [2023-12-25 17:47:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:36,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:36,633 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 17:47:36,636 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 17:47:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:40,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 14409 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:40,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 42 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:40,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-25 17:47:40,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512624748] [2023-12-25 17:47:40,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303613925] [2023-12-25 17:47:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303613925] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:40,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826419438] [2023-12-25 17:47:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:40,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:40,909 INFO L87 Difference]: Start difference. First operand 5071 states and 8433 transitions. Second operand has 4 states, 4 states have (on average 731.25) internal successors, (2925), 4 states have internal predecessors, (2925), 0 states have call successors, (0), 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 17:47:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:41,043 INFO L93 Difference]: Finished difference Result 14095 states and 23490 transitions. [2023-12-25 17:47:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:41,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 731.25) internal successors, (2925), 4 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3154 [2023-12-25 17:47:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:41,054 INFO L225 Difference]: With dead ends: 14095 [2023-12-25 17:47:41,055 INFO L226 Difference]: Without dead ends: 9525 [2023-12-25 17:47:41,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6307 GetRequests, 6297 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:41,061 INFO L413 NwaCegarLoop]: 8282 mSDtfsCounter, 7414 mSDsluCounter, 15971 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7414 SdHoareTripleChecker+Valid, 24253 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 17:47:41,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7414 Valid, 24253 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2023-12-25 17:47:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5073. [2023-12-25 17:47:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 5072 states have (on average 1.663052050473186) internal successors, (8435), 5072 states have internal predecessors, (8435), 0 states have call successors, (0), 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 17:47:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 8435 transitions. [2023-12-25 17:47:41,125 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 8435 transitions. Word has length 3154 [2023-12-25 17:47:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:41,127 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 8435 transitions. [2023-12-25 17:47:41,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 731.25) internal successors, (2925), 4 states have internal predecessors, (2925), 0 states have call successors, (0), 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 17:47:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 8435 transitions. [2023-12-25 17:47:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3156 [2023-12-25 17:47:41,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:41,181 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, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:41,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 17:47:41,400 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,SelfDestructingSolverStorable57 [2023-12-25 17:47:41,400 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:41,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash -403633471, now seen corresponding path program 1 times [2023-12-25 17:47:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242747600] [2023-12-25 17:47:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:41,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:41,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116482506] [2023-12-25 17:47:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:41,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:41,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:41,641 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 17:47:41,645 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 17:47:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:44,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 14413 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:44,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 44 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:45,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-25 17:47:45,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242747600] [2023-12-25 17:47:45,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116482506] [2023-12-25 17:47:45,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116482506] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:45,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:45,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867124469] [2023-12-25 17:47:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:45,262 INFO L87 Difference]: Start difference. First operand 5073 states and 8435 transitions. Second operand has 4 states, 4 states have (on average 732.0) internal successors, (2928), 4 states have internal predecessors, (2928), 0 states have call successors, (0), 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 17:47:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:45,386 INFO L93 Difference]: Finished difference Result 14101 states and 23496 transitions. [2023-12-25 17:47:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 732.0) internal successors, (2928), 4 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3155 [2023-12-25 17:47:45,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:45,396 INFO L225 Difference]: With dead ends: 14101 [2023-12-25 17:47:45,396 INFO L226 Difference]: Without dead ends: 9526 [2023-12-25 17:47:45,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6309 GetRequests, 6299 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:45,400 INFO L413 NwaCegarLoop]: 8277 mSDtfsCounter, 7411 mSDsluCounter, 15966 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7411 SdHoareTripleChecker+Valid, 24243 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 17:47:45,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7411 Valid, 24243 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2023-12-25 17:47:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 5075. [2023-12-25 17:47:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5075 states, 5074 states have (on average 1.6627906976744187) internal successors, (8437), 5074 states have internal predecessors, (8437), 0 states have call successors, (0), 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 17:47:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5075 states to 5075 states and 8437 transitions. [2023-12-25 17:47:45,452 INFO L78 Accepts]: Start accepts. Automaton has 5075 states and 8437 transitions. Word has length 3155 [2023-12-25 17:47:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:45,453 INFO L495 AbstractCegarLoop]: Abstraction has 5075 states and 8437 transitions. [2023-12-25 17:47:45,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 732.0) internal successors, (2928), 4 states have internal predecessors, (2928), 0 states have call successors, (0), 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 17:47:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5075 states and 8437 transitions. [2023-12-25 17:47:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3157 [2023-12-25 17:47:45,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:45,516 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, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:45,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-25 17:47:45,732 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,SelfDestructingSolverStorable58 [2023-12-25 17:47:45,732 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:45,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash -87273969, now seen corresponding path program 1 times [2023-12-25 17:47:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022871674] [2023-12-25 17:47:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:45,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:45,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685933466] [2023-12-25 17:47:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:45,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:45,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:45,959 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 17:47:45,960 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 17:47:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:49,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 14416 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:49,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 46 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:49,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-25 17:47:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022871674] [2023-12-25 17:47:49,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685933466] [2023-12-25 17:47:49,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685933466] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:49,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:49,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:49,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20023189] [2023-12-25 17:47:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:49,791 INFO L87 Difference]: Start difference. First operand 5075 states and 8437 transitions. Second operand has 4 states, 4 states have (on average 732.75) internal successors, (2931), 4 states have internal predecessors, (2931), 0 states have call successors, (0), 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 17:47:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:49,933 INFO L93 Difference]: Finished difference Result 14107 states and 23502 transitions. [2023-12-25 17:47:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:49,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 732.75) internal successors, (2931), 4 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3156 [2023-12-25 17:47:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:49,944 INFO L225 Difference]: With dead ends: 14107 [2023-12-25 17:47:49,944 INFO L226 Difference]: Without dead ends: 9527 [2023-12-25 17:47:49,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6311 GetRequests, 6301 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:49,948 INFO L413 NwaCegarLoop]: 8272 mSDtfsCounter, 7408 mSDsluCounter, 15961 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7408 SdHoareTripleChecker+Valid, 24233 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 17:47:49,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7408 Valid, 24233 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9527 states. [2023-12-25 17:47:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9527 to 5077. [2023-12-25 17:47:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 1.6625295508274232) internal successors, (8439), 5076 states have internal predecessors, (8439), 0 states have call successors, (0), 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 17:47:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 8439 transitions. [2023-12-25 17:47:50,000 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 8439 transitions. Word has length 3156 [2023-12-25 17:47:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:50,002 INFO L495 AbstractCegarLoop]: Abstraction has 5077 states and 8439 transitions. [2023-12-25 17:47:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 732.75) internal successors, (2931), 4 states have internal predecessors, (2931), 0 states have call successors, (0), 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 17:47:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 8439 transitions. [2023-12-25 17:47:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3158 [2023-12-25 17:47:50,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:50,056 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, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:50,093 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 17:47:50,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-25 17:47:50,272 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:50,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1622917659, now seen corresponding path program 1 times [2023-12-25 17:47:50,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:50,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252489669] [2023-12-25 17:47:50,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:50,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:50,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:50,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695003593] [2023-12-25 17:47:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:50,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:50,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:50,478 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 17:47:50,480 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 17:47:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:53,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 14419 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:53,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:54,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-25 17:47:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252489669] [2023-12-25 17:47:54,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695003593] [2023-12-25 17:47:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695003593] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795013553] [2023-12-25 17:47:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:54,224 INFO L87 Difference]: Start difference. First operand 5077 states and 8439 transitions. Second operand has 4 states, 4 states have (on average 733.5) internal successors, (2934), 4 states have internal predecessors, (2934), 0 states have call successors, (0), 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 17:47:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:54,343 INFO L93 Difference]: Finished difference Result 14113 states and 23508 transitions. [2023-12-25 17:47:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:54,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 733.5) internal successors, (2934), 4 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3157 [2023-12-25 17:47:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:54,354 INFO L225 Difference]: With dead ends: 14113 [2023-12-25 17:47:54,354 INFO L226 Difference]: Without dead ends: 9528 [2023-12-25 17:47:54,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6313 GetRequests, 6303 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:54,359 INFO L413 NwaCegarLoop]: 8267 mSDtfsCounter, 7405 mSDsluCounter, 15956 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7405 SdHoareTripleChecker+Valid, 24223 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 17:47:54,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7405 Valid, 24223 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9528 states. [2023-12-25 17:47:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9528 to 5079. [2023-12-25 17:47:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 5078 states have (on average 1.662268609688854) internal successors, (8441), 5078 states have internal predecessors, (8441), 0 states have call successors, (0), 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 17:47:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 8441 transitions. [2023-12-25 17:47:54,412 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 8441 transitions. Word has length 3157 [2023-12-25 17:47:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:54,413 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 8441 transitions. [2023-12-25 17:47:54,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 733.5) internal successors, (2934), 4 states have internal predecessors, (2934), 0 states have call successors, (0), 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 17:47:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 8441 transitions. [2023-12-25 17:47:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3159 [2023-12-25 17:47:54,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:54,466 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, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:54,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-25 17:47:54,680 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,SelfDestructingSolverStorable60 [2023-12-25 17:47:54,680 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:54,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash 727671733, now seen corresponding path program 1 times [2023-12-25 17:47:54,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:54,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385787155] [2023-12-25 17:47:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:54,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:54,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:54,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541181156] [2023-12-25 17:47:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:54,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:54,894 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 17:47:54,895 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 17:47:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:47:58,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 14422 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:47:58,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:47:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 50 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:47:58,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:47:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-12-25 17:47:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:47:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385787155] [2023-12-25 17:47:58,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:47:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541181156] [2023-12-25 17:47:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541181156] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:47:58,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:47:58,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:47:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887216564] [2023-12-25 17:47:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:47:58,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:47:58,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:47:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:47:58,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:47:58,774 INFO L87 Difference]: Start difference. First operand 5079 states and 8441 transitions. Second operand has 4 states, 4 states have (on average 734.25) internal successors, (2937), 4 states have internal predecessors, (2937), 0 states have call successors, (0), 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 17:47:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:47:58,907 INFO L93 Difference]: Finished difference Result 14119 states and 23514 transitions. [2023-12-25 17:47:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:47:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 734.25) internal successors, (2937), 4 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3158 [2023-12-25 17:47:58,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:47:58,917 INFO L225 Difference]: With dead ends: 14119 [2023-12-25 17:47:58,918 INFO L226 Difference]: Without dead ends: 9529 [2023-12-25 17:47:58,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6315 GetRequests, 6305 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:47:58,923 INFO L413 NwaCegarLoop]: 8262 mSDtfsCounter, 7402 mSDsluCounter, 15951 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7402 SdHoareTripleChecker+Valid, 24213 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 17:47:58,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7402 Valid, 24213 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:47:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2023-12-25 17:47:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 5081. [2023-12-25 17:47:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 1.662007874015748) internal successors, (8443), 5080 states have internal predecessors, (8443), 0 states have call successors, (0), 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 17:47:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 8443 transitions. [2023-12-25 17:47:59,009 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 8443 transitions. Word has length 3158 [2023-12-25 17:47:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:47:59,010 INFO L495 AbstractCegarLoop]: Abstraction has 5081 states and 8443 transitions. [2023-12-25 17:47:59,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 734.25) internal successors, (2937), 4 states have internal predecessors, (2937), 0 states have call successors, (0), 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 17:47:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 8443 transitions. [2023-12-25 17:47:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3160 [2023-12-25 17:47:59,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:47:59,063 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, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:59,119 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 17:47:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:59,277 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:47:59,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:47:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -508171273, now seen corresponding path program 1 times [2023-12-25 17:47:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:47:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353400516] [2023-12-25 17:47:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:47:59,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:47:59,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061627035] [2023-12-25 17:47:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:47:59,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:47:59,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:47:59,498 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 17:47:59,500 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 17:48:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:02,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 14426 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:02,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 52 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:03,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-25 17:48:03,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:03,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353400516] [2023-12-25 17:48:03,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:03,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061627035] [2023-12-25 17:48:03,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061627035] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:03,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:03,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:03,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975657679] [2023-12-25 17:48:03,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:03,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:03,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:03,091 INFO L87 Difference]: Start difference. First operand 5081 states and 8443 transitions. Second operand has 4 states, 4 states have (on average 735.0) internal successors, (2940), 4 states have internal predecessors, (2940), 0 states have call successors, (0), 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 17:48:03,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:03,211 INFO L93 Difference]: Finished difference Result 14125 states and 23520 transitions. [2023-12-25 17:48:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 735.0) internal successors, (2940), 4 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3159 [2023-12-25 17:48:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:03,221 INFO L225 Difference]: With dead ends: 14125 [2023-12-25 17:48:03,221 INFO L226 Difference]: Without dead ends: 9530 [2023-12-25 17:48:03,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6317 GetRequests, 6307 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:03,226 INFO L413 NwaCegarLoop]: 8257 mSDtfsCounter, 7399 mSDsluCounter, 15946 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7399 SdHoareTripleChecker+Valid, 24203 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 17:48:03,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7399 Valid, 24203 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2023-12-25 17:48:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 5083. [2023-12-25 17:48:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5083 states, 5082 states have (on average 1.6617473435655254) internal successors, (8445), 5082 states have internal predecessors, (8445), 0 states have call successors, (0), 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 17:48:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 8445 transitions. [2023-12-25 17:48:03,406 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 8445 transitions. Word has length 3159 [2023-12-25 17:48:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 5083 states and 8445 transitions. [2023-12-25 17:48:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 735.0) internal successors, (2940), 4 states have internal predecessors, (2940), 0 states have call successors, (0), 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 17:48:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 8445 transitions. [2023-12-25 17:48:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3161 [2023-12-25 17:48:03,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:03,461 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, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:03,498 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 17:48:03,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:03,688 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:03,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 375128029, now seen corresponding path program 1 times [2023-12-25 17:48:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:03,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745399271] [2023-12-25 17:48:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:03,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931570642] [2023-12-25 17:48:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:03,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:03,901 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 17:48:03,903 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 17:48:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:07,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 14429 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:07,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 54 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:07,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-25 17:48:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745399271] [2023-12-25 17:48:07,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931570642] [2023-12-25 17:48:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931570642] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:07,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758179929] [2023-12-25 17:48:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:07,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:07,756 INFO L87 Difference]: Start difference. First operand 5083 states and 8445 transitions. Second operand has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 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 17:48:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:07,868 INFO L93 Difference]: Finished difference Result 14134 states and 23529 transitions. [2023-12-25 17:48:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:07,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3160 [2023-12-25 17:48:07,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:07,878 INFO L225 Difference]: With dead ends: 14134 [2023-12-25 17:48:07,878 INFO L226 Difference]: Without dead ends: 9534 [2023-12-25 17:48:07,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6319 GetRequests, 6309 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:07,883 INFO L413 NwaCegarLoop]: 8249 mSDtfsCounter, 7394 mSDsluCounter, 15938 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7394 SdHoareTripleChecker+Valid, 24187 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 17:48:07,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7394 Valid, 24187 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9534 states. [2023-12-25 17:48:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9534 to 5091. [2023-12-25 17:48:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5091 states, 5090 states have (on average 1.6611001964636543) internal successors, (8455), 5090 states have internal predecessors, (8455), 0 states have call successors, (0), 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 17:48:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 8455 transitions. [2023-12-25 17:48:07,944 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 8455 transitions. Word has length 3160 [2023-12-25 17:48:07,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:07,945 INFO L495 AbstractCegarLoop]: Abstraction has 5091 states and 8455 transitions. [2023-12-25 17:48:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 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 17:48:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 8455 transitions. [2023-12-25 17:48:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3162 [2023-12-25 17:48:07,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:08,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:08,062 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 17:48:08,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:08,212 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:08,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1955162261, now seen corresponding path program 1 times [2023-12-25 17:48:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609351703] [2023-12-25 17:48:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:08,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117872991] [2023-12-25 17:48:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:08,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:08,419 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 17:48:08,421 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 17:48:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:11,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 14432 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:48:11,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 58 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:12,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-25 17:48:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609351703] [2023-12-25 17:48:12,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117872991] [2023-12-25 17:48:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117872991] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:12,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:12,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:48:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130902350] [2023-12-25 17:48:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:12,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:48:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:48:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:48:12,240 INFO L87 Difference]: Start difference. First operand 5091 states and 8455 transitions. Second operand has 5 states, 5 states have (on average 589.6) internal successors, (2948), 5 states have internal predecessors, (2948), 0 states have call successors, (0), 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 17:48:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:12,472 INFO L93 Difference]: Finished difference Result 18757 states and 31221 transitions. [2023-12-25 17:48:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:48:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 589.6) internal successors, (2948), 5 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3161 [2023-12-25 17:48:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:12,486 INFO L225 Difference]: With dead ends: 18757 [2023-12-25 17:48:12,486 INFO L226 Difference]: Without dead ends: 14146 [2023-12-25 17:48:12,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6324 GetRequests, 6310 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:48:12,493 INFO L413 NwaCegarLoop]: 15708 mSDtfsCounter, 14863 mSDsluCounter, 39096 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14863 SdHoareTripleChecker+Valid, 54804 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:48:12,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14863 Valid, 54804 Invalid, 43 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14146 states. [2023-12-25 17:48:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14146 to 5101. [2023-12-25 17:48:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 1.660392156862745) internal successors, (8468), 5100 states have internal predecessors, (8468), 0 states have call successors, (0), 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 17:48:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 8468 transitions. [2023-12-25 17:48:12,562 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 8468 transitions. Word has length 3161 [2023-12-25 17:48:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:12,564 INFO L495 AbstractCegarLoop]: Abstraction has 5101 states and 8468 transitions. [2023-12-25 17:48:12,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 589.6) internal successors, (2948), 5 states have internal predecessors, (2948), 0 states have call successors, (0), 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 17:48:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 8468 transitions. [2023-12-25 17:48:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3163 [2023-12-25 17:48:12,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:12,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:12,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-25 17:48:12,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:12,833 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:12,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash -981085335, now seen corresponding path program 1 times [2023-12-25 17:48:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:12,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146836625] [2023-12-25 17:48:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:13,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:13,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138887881] [2023-12-25 17:48:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:13,050 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 17:48:13,051 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 17:48:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:16,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 14435 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:16,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 62 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:16,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-25 17:48:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146836625] [2023-12-25 17:48:16,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138887881] [2023-12-25 17:48:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138887881] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:16,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:16,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670838480] [2023-12-25 17:48:16,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:16,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:16,918 INFO L87 Difference]: Start difference. First operand 5101 states and 8468 transitions. Second operand has 4 states, 4 states have (on average 737.75) internal successors, (2951), 4 states have internal predecessors, (2951), 0 states have call successors, (0), 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 17:48:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:17,033 INFO L93 Difference]: Finished difference Result 14180 states and 23586 transitions. [2023-12-25 17:48:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 737.75) internal successors, (2951), 4 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3162 [2023-12-25 17:48:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:17,044 INFO L225 Difference]: With dead ends: 14180 [2023-12-25 17:48:17,045 INFO L226 Difference]: Without dead ends: 9555 [2023-12-25 17:48:17,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6323 GetRequests, 6313 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:17,050 INFO L413 NwaCegarLoop]: 8235 mSDtfsCounter, 7390 mSDsluCounter, 15924 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7390 SdHoareTripleChecker+Valid, 24159 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 17:48:17,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7390 Valid, 24159 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9555 states. [2023-12-25 17:48:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9555 to 5105. [2023-12-25 17:48:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 1.6598746081504703) internal successors, (8472), 5104 states have internal predecessors, (8472), 0 states have call successors, (0), 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 17:48:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 8472 transitions. [2023-12-25 17:48:17,114 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 8472 transitions. Word has length 3162 [2023-12-25 17:48:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:17,115 INFO L495 AbstractCegarLoop]: Abstraction has 5105 states and 8472 transitions. [2023-12-25 17:48:17,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 737.75) internal successors, (2951), 4 states have internal predecessors, (2951), 0 states have call successors, (0), 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 17:48:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 8472 transitions. [2023-12-25 17:48:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3164 [2023-12-25 17:48:17,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:17,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:17,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-25 17:48:17,384 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,SelfDestructingSolverStorable65 [2023-12-25 17:48:17,384 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1647236421, now seen corresponding path program 1 times [2023-12-25 17:48:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170604675] [2023-12-25 17:48:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:17,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117821097] [2023-12-25 17:48:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:17,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:17,589 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 17:48:17,592 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 17:48:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:20,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 14438 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:20,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 64 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:21,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-25 17:48:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:21,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170604675] [2023-12-25 17:48:21,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:21,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117821097] [2023-12-25 17:48:21,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117821097] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:21,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:21,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:21,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529364906] [2023-12-25 17:48:21,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:21,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:21,388 INFO L87 Difference]: Start difference. First operand 5105 states and 8472 transitions. Second operand has 4 states, 4 states have (on average 738.75) internal successors, (2955), 4 states have internal predecessors, (2955), 0 states have call successors, (0), 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 17:48:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:21,510 INFO L93 Difference]: Finished difference Result 14198 states and 23605 transitions. [2023-12-25 17:48:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:21,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 738.75) internal successors, (2955), 4 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3163 [2023-12-25 17:48:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:21,522 INFO L225 Difference]: With dead ends: 14198 [2023-12-25 17:48:21,522 INFO L226 Difference]: Without dead ends: 9563 [2023-12-25 17:48:21,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6325 GetRequests, 6315 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:21,528 INFO L413 NwaCegarLoop]: 8227 mSDtfsCounter, 7385 mSDsluCounter, 15916 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7385 SdHoareTripleChecker+Valid, 24143 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 17:48:21,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7385 Valid, 24143 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9563 states. [2023-12-25 17:48:21,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9563 to 5115. [2023-12-25 17:48:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 1.6589753617520533) internal successors, (8484), 5114 states have internal predecessors, (8484), 0 states have call successors, (0), 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 17:48:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 8484 transitions. [2023-12-25 17:48:21,604 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 8484 transitions. Word has length 3163 [2023-12-25 17:48:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:21,606 INFO L495 AbstractCegarLoop]: Abstraction has 5115 states and 8484 transitions. [2023-12-25 17:48:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 738.75) internal successors, (2955), 4 states have internal predecessors, (2955), 0 states have call successors, (0), 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 17:48:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 8484 transitions. [2023-12-25 17:48:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3165 [2023-12-25 17:48:21,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:21,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:21,713 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 17:48:21,875 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,SelfDestructingSolverStorable66 [2023-12-25 17:48:21,876 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:21,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash -307370637, now seen corresponding path program 1 times [2023-12-25 17:48:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:21,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320249317] [2023-12-25 17:48:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:22,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:22,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557862932] [2023-12-25 17:48:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:22,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:22,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:22,217 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 17:48:22,241 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 17:48:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:25,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 14442 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:25,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 68 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:25,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 17:48:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320249317] [2023-12-25 17:48:25,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557862932] [2023-12-25 17:48:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557862932] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:25,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:25,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882794587] [2023-12-25 17:48:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:25,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:25,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:25,879 INFO L87 Difference]: Start difference. First operand 5115 states and 8484 transitions. Second operand has 4 states, 4 states have (on average 739.75) internal successors, (2959), 4 states have internal predecessors, (2959), 0 states have call successors, (0), 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 17:48:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:26,002 INFO L93 Difference]: Finished difference Result 14225 states and 23636 transitions. [2023-12-25 17:48:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:26,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 739.75) internal successors, (2959), 4 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3164 [2023-12-25 17:48:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:26,013 INFO L225 Difference]: With dead ends: 14225 [2023-12-25 17:48:26,013 INFO L226 Difference]: Without dead ends: 9577 [2023-12-25 17:48:26,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6327 GetRequests, 6317 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:26,020 INFO L413 NwaCegarLoop]: 8219 mSDtfsCounter, 7382 mSDsluCounter, 15908 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7382 SdHoareTripleChecker+Valid, 24127 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 17:48:26,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7382 Valid, 24127 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2023-12-25 17:48:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 5125. [2023-12-25 17:48:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 1.6580796252927401) internal successors, (8496), 5124 states have internal predecessors, (8496), 0 states have call successors, (0), 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 17:48:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 8496 transitions. [2023-12-25 17:48:26,082 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 8496 transitions. Word has length 3164 [2023-12-25 17:48:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:26,083 INFO L495 AbstractCegarLoop]: Abstraction has 5125 states and 8496 transitions. [2023-12-25 17:48:26,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 739.75) internal successors, (2959), 4 states have internal predecessors, (2959), 0 states have call successors, (0), 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 17:48:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 8496 transitions. [2023-12-25 17:48:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3166 [2023-12-25 17:48:26,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:26,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:26,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-25 17:48:26,360 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,SelfDestructingSolverStorable67 [2023-12-25 17:48:26,360 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:26,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:26,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1792388535, now seen corresponding path program 1 times [2023-12-25 17:48:26,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:26,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762034845] [2023-12-25 17:48:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:26,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:26,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363997997] [2023-12-25 17:48:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:26,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:26,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:26,575 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 17:48:26,577 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 17:48:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:29,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 14445 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:29,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 72 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:30,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-25 17:48:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762034845] [2023-12-25 17:48:30,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363997997] [2023-12-25 17:48:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363997997] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:30,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:30,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:30,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262537744] [2023-12-25 17:48:30,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:30,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:30,299 INFO L87 Difference]: Start difference. First operand 5125 states and 8496 transitions. Second operand has 4 states, 4 states have (on average 740.5) internal successors, (2962), 4 states have internal predecessors, (2962), 0 states have call successors, (0), 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 17:48:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:30,416 INFO L93 Difference]: Finished difference Result 14252 states and 23667 transitions. [2023-12-25 17:48:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:30,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 740.5) internal successors, (2962), 4 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3165 [2023-12-25 17:48:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:30,426 INFO L225 Difference]: With dead ends: 14252 [2023-12-25 17:48:30,426 INFO L226 Difference]: Without dead ends: 9588 [2023-12-25 17:48:30,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6329 GetRequests, 6319 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:30,431 INFO L413 NwaCegarLoop]: 8214 mSDtfsCounter, 7381 mSDsluCounter, 15903 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7381 SdHoareTripleChecker+Valid, 24117 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 17:48:30,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7381 Valid, 24117 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9588 states. [2023-12-25 17:48:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9588 to 5129. [2023-12-25 17:48:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 1.6575663026521061) internal successors, (8500), 5128 states have internal predecessors, (8500), 0 states have call successors, (0), 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 17:48:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 8500 transitions. [2023-12-25 17:48:30,486 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 8500 transitions. Word has length 3165 [2023-12-25 17:48:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 5129 states and 8500 transitions. [2023-12-25 17:48:30,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 740.5) internal successors, (2962), 4 states have internal predecessors, (2962), 0 states have call successors, (0), 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 17:48:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 8500 transitions. [2023-12-25 17:48:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3167 [2023-12-25 17:48:30,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:30,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:30,700 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 17:48:30,872 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,SelfDestructingSolverStorable68 [2023-12-25 17:48:30,873 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:30,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -603887079, now seen corresponding path program 1 times [2023-12-25 17:48:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:30,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493055323] [2023-12-25 17:48:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:31,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709651010] [2023-12-25 17:48:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:31,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:31,081 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 17:48:31,083 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 17:48:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:34,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 14448 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:34,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 74 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:34,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-25 17:48:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493055323] [2023-12-25 17:48:34,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709651010] [2023-12-25 17:48:34,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709651010] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:34,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:34,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128076700] [2023-12-25 17:48:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:34,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:34,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:34,706 INFO L87 Difference]: Start difference. First operand 5129 states and 8500 transitions. Second operand has 4 states, 4 states have (on average 741.5) internal successors, (2966), 4 states have internal predecessors, (2966), 0 states have call successors, (0), 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 17:48:34,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:34,823 INFO L93 Difference]: Finished difference Result 14270 states and 23686 transitions. [2023-12-25 17:48:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 741.5) internal successors, (2966), 4 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3166 [2023-12-25 17:48:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:34,832 INFO L225 Difference]: With dead ends: 14270 [2023-12-25 17:48:34,832 INFO L226 Difference]: Without dead ends: 9596 [2023-12-25 17:48:34,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6331 GetRequests, 6321 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:34,836 INFO L413 NwaCegarLoop]: 8205 mSDtfsCounter, 7376 mSDsluCounter, 15894 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7376 SdHoareTripleChecker+Valid, 24099 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 17:48:34,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7376 Valid, 24099 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2023-12-25 17:48:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 5139. [2023-12-25 17:48:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 1.6568703775788245) internal successors, (8513), 5138 states have internal predecessors, (8513), 0 states have call successors, (0), 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 17:48:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 8513 transitions. [2023-12-25 17:48:34,885 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 8513 transitions. Word has length 3166 [2023-12-25 17:48:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:34,886 INFO L495 AbstractCegarLoop]: Abstraction has 5139 states and 8513 transitions. [2023-12-25 17:48:34,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 741.5) internal successors, (2966), 4 states have internal predecessors, (2966), 0 states have call successors, (0), 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 17:48:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 8513 transitions. [2023-12-25 17:48:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3168 [2023-12-25 17:48:34,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:34,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:34,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-25 17:48:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:35,148 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:35,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash 567127979, now seen corresponding path program 1 times [2023-12-25 17:48:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:35,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324950043] [2023-12-25 17:48:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:35,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510425988] [2023-12-25 17:48:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:35,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:35,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:35,428 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 17:48:35,429 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 17:48:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:38,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 14451 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:38,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 78 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:39,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-12-25 17:48:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324950043] [2023-12-25 17:48:39,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510425988] [2023-12-25 17:48:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510425988] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856328412] [2023-12-25 17:48:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:39,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:39,230 INFO L87 Difference]: Start difference. First operand 5139 states and 8513 transitions. Second operand has 4 states, 4 states have (on average 742.5) internal successors, (2970), 4 states have internal predecessors, (2970), 0 states have call successors, (0), 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 17:48:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:39,371 INFO L93 Difference]: Finished difference Result 14297 states and 23719 transitions. [2023-12-25 17:48:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:39,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 742.5) internal successors, (2970), 4 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3167 [2023-12-25 17:48:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:39,385 INFO L225 Difference]: With dead ends: 14297 [2023-12-25 17:48:39,385 INFO L226 Difference]: Without dead ends: 9610 [2023-12-25 17:48:39,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6333 GetRequests, 6323 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:39,392 INFO L413 NwaCegarLoop]: 8197 mSDtfsCounter, 7373 mSDsluCounter, 15886 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7373 SdHoareTripleChecker+Valid, 24083 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 17:48:39,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7373 Valid, 24083 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9610 states. [2023-12-25 17:48:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9610 to 5149. [2023-12-25 17:48:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 1.6559829059829059) internal successors, (8525), 5148 states have internal predecessors, (8525), 0 states have call successors, (0), 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 17:48:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8525 transitions. [2023-12-25 17:48:39,463 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8525 transitions. Word has length 3167 [2023-12-25 17:48:39,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:39,465 INFO L495 AbstractCegarLoop]: Abstraction has 5149 states and 8525 transitions. [2023-12-25 17:48:39,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 742.5) internal successors, (2970), 4 states have internal predecessors, (2970), 0 states have call successors, (0), 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 17:48:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8525 transitions. [2023-12-25 17:48:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3169 [2023-12-25 17:48:39,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:39,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:39,580 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 17:48:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:39,752 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -835512539, now seen corresponding path program 1 times [2023-12-25 17:48:39,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:39,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731193739] [2023-12-25 17:48:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:40,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:40,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138875888] [2023-12-25 17:48:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:40,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:40,018 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 17:48:40,022 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 17:48:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:43,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 14454 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:48:43,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 82 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:43,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-25 17:48:43,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731193739] [2023-12-25 17:48:43,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138875888] [2023-12-25 17:48:43,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138875888] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:43,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:43,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:48:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042353328] [2023-12-25 17:48:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:48:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:48:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:48:43,771 INFO L87 Difference]: Start difference. First operand 5149 states and 8525 transitions. Second operand has 5 states, 5 states have (on average 594.6) internal successors, (2973), 5 states have internal predecessors, (2973), 0 states have call successors, (0), 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 17:48:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:44,115 INFO L93 Difference]: Finished difference Result 19020 states and 31541 transitions. [2023-12-25 17:48:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:48:44,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 594.6) internal successors, (2973), 5 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3168 [2023-12-25 17:48:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:44,126 INFO L225 Difference]: With dead ends: 19020 [2023-12-25 17:48:44,126 INFO L226 Difference]: Without dead ends: 14317 [2023-12-25 17:48:44,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6336 GetRequests, 6323 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:48:44,129 INFO L413 NwaCegarLoop]: 15667 mSDtfsCounter, 14847 mSDsluCounter, 39017 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14847 SdHoareTripleChecker+Valid, 54684 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:48:44,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14847 Valid, 54684 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14317 states. [2023-12-25 17:48:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14317 to 5153. [2023-12-25 17:48:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 1.655473602484472) internal successors, (8529), 5152 states have internal predecessors, (8529), 0 states have call successors, (0), 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 17:48:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8529 transitions. [2023-12-25 17:48:44,188 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8529 transitions. Word has length 3168 [2023-12-25 17:48:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:44,189 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 8529 transitions. [2023-12-25 17:48:44,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 594.6) internal successors, (2973), 5 states have internal predecessors, (2973), 0 states have call successors, (0), 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 17:48:44,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8529 transitions. [2023-12-25 17:48:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3170 [2023-12-25 17:48:44,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:44,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:44,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-25 17:48:44,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:44,456 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:44,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash -116616569, now seen corresponding path program 1 times [2023-12-25 17:48:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623250411] [2023-12-25 17:48:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:44,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:44,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83733873] [2023-12-25 17:48:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:44,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:44,670 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 17:48:44,671 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 17:48:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:47,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 14458 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:47,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 84 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:48,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-25 17:48:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623250411] [2023-12-25 17:48:48,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83733873] [2023-12-25 17:48:48,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83733873] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:48,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:48,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289524282] [2023-12-25 17:48:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:48,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:48,196 INFO L87 Difference]: Start difference. First operand 5153 states and 8529 transitions. Second operand has 4 states, 4 states have (on average 744.25) internal successors, (2977), 4 states have internal predecessors, (2977), 0 states have call successors, (0), 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 17:48:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:48,319 INFO L93 Difference]: Finished difference Result 14342 states and 23769 transitions. [2023-12-25 17:48:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:48,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 744.25) internal successors, (2977), 4 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3169 [2023-12-25 17:48:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:48,328 INFO L225 Difference]: With dead ends: 14342 [2023-12-25 17:48:48,328 INFO L226 Difference]: Without dead ends: 9629 [2023-12-25 17:48:48,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6337 GetRequests, 6327 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:48,331 INFO L413 NwaCegarLoop]: 8184 mSDtfsCounter, 7367 mSDsluCounter, 15873 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7367 SdHoareTripleChecker+Valid, 24057 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 17:48:48,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7367 Valid, 24057 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:48,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9629 states. [2023-12-25 17:48:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9629 to 5163. [2023-12-25 17:48:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 1.6545912437039907) internal successors, (8541), 5162 states have internal predecessors, (8541), 0 states have call successors, (0), 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 17:48:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 8541 transitions. [2023-12-25 17:48:48,379 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 8541 transitions. Word has length 3169 [2023-12-25 17:48:48,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:48,380 INFO L495 AbstractCegarLoop]: Abstraction has 5163 states and 8541 transitions. [2023-12-25 17:48:48,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 744.25) internal successors, (2977), 4 states have internal predecessors, (2977), 0 states have call successors, (0), 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 17:48:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 8541 transitions. [2023-12-25 17:48:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3171 [2023-12-25 17:48:48,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:48,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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17:48:48,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-25 17:48:48,660 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,SelfDestructingSolverStorable72 [2023-12-25 17:48:48,660 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:48,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1355762701, now seen corresponding path program 1 times [2023-12-25 17:48:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560035895] [2023-12-25 17:48:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:48,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700343905] [2023-12-25 17:48:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:48,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:48,869 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 17:48:48,872 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 17:48:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:52,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 14461 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:52,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 88 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:52,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-25 17:48:52,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:52,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560035895] [2023-12-25 17:48:52,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:52,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700343905] [2023-12-25 17:48:52,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700343905] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:52,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:52,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:52,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306094021] [2023-12-25 17:48:52,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:52,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:52,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:52,713 INFO L87 Difference]: Start difference. First operand 5163 states and 8541 transitions. Second operand has 4 states, 4 states have (on average 745.25) internal successors, (2981), 4 states have internal predecessors, (2981), 0 states have call successors, (0), 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 17:48:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:52,825 INFO L93 Difference]: Finished difference Result 14369 states and 23800 transitions. [2023-12-25 17:48:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:52,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 745.25) internal successors, (2981), 4 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3170 [2023-12-25 17:48:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:52,834 INFO L225 Difference]: With dead ends: 14369 [2023-12-25 17:48:52,834 INFO L226 Difference]: Without dead ends: 9643 [2023-12-25 17:48:52,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6339 GetRequests, 6329 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:52,838 INFO L413 NwaCegarLoop]: 8176 mSDtfsCounter, 7364 mSDsluCounter, 15865 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7364 SdHoareTripleChecker+Valid, 24041 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 17:48:52,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7364 Valid, 24041 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2023-12-25 17:48:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 5173. [2023-12-25 17:48:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 1.6537122969837588) internal successors, (8553), 5172 states have internal predecessors, (8553), 0 states have call successors, (0), 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 17:48:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 8553 transitions. [2023-12-25 17:48:52,885 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 8553 transitions. Word has length 3170 [2023-12-25 17:48:52,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:52,886 INFO L495 AbstractCegarLoop]: Abstraction has 5173 states and 8553 transitions. [2023-12-25 17:48:52,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 745.25) internal successors, (2981), 4 states have internal predecessors, (2981), 0 states have call successors, (0), 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 17:48:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 8553 transitions. [2023-12-25 17:48:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3172 [2023-12-25 17:48:52,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:52,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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17:48:52,979 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 17:48:53,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:53,156 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:53,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1225824317, now seen corresponding path program 1 times [2023-12-25 17:48:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422160452] [2023-12-25 17:48:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:53,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356818999] [2023-12-25 17:48:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:53,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:53,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:53,369 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 17:48:53,376 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 17:48:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:48:56,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 14465 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:48:56,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:48:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 92 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:48:57,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:48:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-25 17:48:57,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:48:57,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422160452] [2023-12-25 17:48:57,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:48:57,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356818999] [2023-12-25 17:48:57,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356818999] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:48:57,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:48:57,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:48:57,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540899865] [2023-12-25 17:48:57,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:48:57,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:48:57,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:48:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:48:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:48:57,129 INFO L87 Difference]: Start difference. First operand 5173 states and 8553 transitions. Second operand has 4 states, 4 states have (on average 746.25) internal successors, (2985), 4 states have internal predecessors, (2985), 0 states have call successors, (0), 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 17:48:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:48:57,245 INFO L93 Difference]: Finished difference Result 14399 states and 23834 transitions. [2023-12-25 17:48:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:48:57,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 746.25) internal successors, (2985), 4 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3171 [2023-12-25 17:48:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:48:57,254 INFO L225 Difference]: With dead ends: 14399 [2023-12-25 17:48:57,254 INFO L226 Difference]: Without dead ends: 9657 [2023-12-25 17:48:57,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6341 GetRequests, 6331 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:48:57,258 INFO L413 NwaCegarLoop]: 8168 mSDtfsCounter, 7361 mSDsluCounter, 15857 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7361 SdHoareTripleChecker+Valid, 24025 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 17:48:57,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7361 Valid, 24025 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:48:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9657 states. [2023-12-25 17:48:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9657 to 5183. [2023-12-25 17:48:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 1.6528367425704362) internal successors, (8565), 5182 states have internal predecessors, (8565), 0 states have call successors, (0), 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 17:48:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 8565 transitions. [2023-12-25 17:48:57,309 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 8565 transitions. Word has length 3171 [2023-12-25 17:48:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:48:57,310 INFO L495 AbstractCegarLoop]: Abstraction has 5183 states and 8565 transitions. [2023-12-25 17:48:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 746.25) internal successors, (2985), 4 states have internal predecessors, (2985), 0 states have call successors, (0), 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 17:48:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 8565 transitions. [2023-12-25 17:48:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3173 [2023-12-25 17:48:57,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:48:57,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 17:48:57,402 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 17:48:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:57,588 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:48:57,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:48:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2145031233, now seen corresponding path program 1 times [2023-12-25 17:48:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:48:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388375517] [2023-12-25 17:48:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:48:57,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:48:57,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886078464] [2023-12-25 17:48:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:48:57,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:48:57,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:48:57,791 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 17:48:57,792 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 17:49:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:00,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 14468 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:01,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 96 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:01,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-25 17:49:01,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388375517] [2023-12-25 17:49:01,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886078464] [2023-12-25 17:49:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886078464] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:01,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:01,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623422924] [2023-12-25 17:49:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:01,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:01,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:01,416 INFO L87 Difference]: Start difference. First operand 5183 states and 8565 transitions. Second operand has 4 states, 4 states have (on average 747.25) internal successors, (2989), 4 states have internal predecessors, (2989), 0 states have call successors, (0), 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 17:49:01,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:01,533 INFO L93 Difference]: Finished difference Result 14429 states and 23868 transitions. [2023-12-25 17:49:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:01,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 747.25) internal successors, (2989), 4 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3172 [2023-12-25 17:49:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:01,543 INFO L225 Difference]: With dead ends: 14429 [2023-12-25 17:49:01,543 INFO L226 Difference]: Without dead ends: 9671 [2023-12-25 17:49:01,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6343 GetRequests, 6333 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:49:01,548 INFO L413 NwaCegarLoop]: 8160 mSDtfsCounter, 7358 mSDsluCounter, 15849 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7358 SdHoareTripleChecker+Valid, 24009 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 17:49:01,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7358 Valid, 24009 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9671 states. [2023-12-25 17:49:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9671 to 5193. [2023-12-25 17:49:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 1.651964560862866) internal successors, (8577), 5192 states have internal predecessors, (8577), 0 states have call successors, (0), 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 17:49:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 8577 transitions. [2023-12-25 17:49:01,602 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 8577 transitions. Word has length 3172 [2023-12-25 17:49:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:01,603 INFO L495 AbstractCegarLoop]: Abstraction has 5193 states and 8577 transitions. [2023-12-25 17:49:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 747.25) internal successors, (2989), 4 states have internal predecessors, (2989), 0 states have call successors, (0), 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 17:49:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 8577 transitions. [2023-12-25 17:49:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3174 [2023-12-25 17:49:01,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:01,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 17:49:01,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:01,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:01,884 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:01,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash -98589325, now seen corresponding path program 1 times [2023-12-25 17:49:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939458768] [2023-12-25 17:49:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:01,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:02,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:02,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106488447] [2023-12-25 17:49:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:02,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:02,113 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 17:49:02,114 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 17:49:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:05,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 14472 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:05,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 100 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:05,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 17:49:05,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939458768] [2023-12-25 17:49:05,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106488447] [2023-12-25 17:49:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106488447] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:05,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:05,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:05,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518260727] [2023-12-25 17:49:05,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:05,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:05,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:05,867 INFO L87 Difference]: Start difference. First operand 5193 states and 8577 transitions. Second operand has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 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 17:49:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:05,989 INFO L93 Difference]: Finished difference Result 14459 states and 23902 transitions. [2023-12-25 17:49:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3173 [2023-12-25 17:49:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:05,999 INFO L225 Difference]: With dead ends: 14459 [2023-12-25 17:49:05,999 INFO L226 Difference]: Without dead ends: 9685 [2023-12-25 17:49:06,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6345 GetRequests, 6335 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:49:06,004 INFO L413 NwaCegarLoop]: 8152 mSDtfsCounter, 7355 mSDsluCounter, 15841 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7355 SdHoareTripleChecker+Valid, 23993 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 17:49:06,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7355 Valid, 23993 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9685 states. [2023-12-25 17:49:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9685 to 5203. [2023-12-25 17:49:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.6510957324106112) internal successors, (8589), 5202 states have internal predecessors, (8589), 0 states have call successors, (0), 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 17:49:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 8589 transitions. [2023-12-25 17:49:06,059 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 8589 transitions. Word has length 3173 [2023-12-25 17:49:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:06,060 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 8589 transitions. [2023-12-25 17:49:06,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 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 17:49:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 8589 transitions. [2023-12-25 17:49:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3175 [2023-12-25 17:49:06,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:06,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:06,152 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 17:49:06,340 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,SelfDestructingSolverStorable76 [2023-12-25 17:49:06,341 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:06,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash 103487503, now seen corresponding path program 1 times [2023-12-25 17:49:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:06,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777566035] [2023-12-25 17:49:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:06,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:06,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404507874] [2023-12-25 17:49:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:06,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:06,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:06,558 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 17:49:06,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-25 17:49:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:09,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 14475 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:09,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 104 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:10,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-25 17:49:10,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:10,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777566035] [2023-12-25 17:49:10,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:10,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404507874] [2023-12-25 17:49:10,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404507874] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:10,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650238254] [2023-12-25 17:49:10,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:10,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:10,341 INFO L87 Difference]: Start difference. First operand 5203 states and 8589 transitions. Second operand has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 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 17:49:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:10,457 INFO L93 Difference]: Finished difference Result 14489 states and 23936 transitions. [2023-12-25 17:49:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:10,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3174 [2023-12-25 17:49:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:10,467 INFO L225 Difference]: With dead ends: 14489 [2023-12-25 17:49:10,467 INFO L226 Difference]: Without dead ends: 9699 [2023-12-25 17:49:10,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6347 GetRequests, 6337 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:49:10,472 INFO L413 NwaCegarLoop]: 8144 mSDtfsCounter, 7352 mSDsluCounter, 15833 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7352 SdHoareTripleChecker+Valid, 23977 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 17:49:10,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7352 Valid, 23977 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9699 states. [2023-12-25 17:49:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9699 to 5213. [2023-12-25 17:49:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 1.6502302379125096) internal successors, (8601), 5212 states have internal predecessors, (8601), 0 states have call successors, (0), 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 17:49:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 8601 transitions. [2023-12-25 17:49:10,526 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 8601 transitions. Word has length 3174 [2023-12-25 17:49:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:10,528 INFO L495 AbstractCegarLoop]: Abstraction has 5213 states and 8601 transitions. [2023-12-25 17:49:10,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 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 17:49:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 8601 transitions. [2023-12-25 17:49:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3176 [2023-12-25 17:49:10,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:10,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:10,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-25 17:49:10,808 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,SelfDestructingSolverStorable77 [2023-12-25 17:49:10,808 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:10,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 150313513, now seen corresponding path program 1 times [2023-12-25 17:49:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807466023] [2023-12-25 17:49:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:11,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:11,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341162260] [2023-12-25 17:49:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:11,116 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:11,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-25 17:49:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:14,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 14479 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:14,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 108 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:14,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-25 17:49:14,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807466023] [2023-12-25 17:49:14,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341162260] [2023-12-25 17:49:14,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341162260] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:14,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:14,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:14,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100999176] [2023-12-25 17:49:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:14,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:14,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:14,796 INFO L87 Difference]: Start difference. First operand 5213 states and 8601 transitions. Second operand has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 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 17:49:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:14,919 INFO L93 Difference]: Finished difference Result 14519 states and 23970 transitions. [2023-12-25 17:49:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:14,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3175 [2023-12-25 17:49:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:14,929 INFO L225 Difference]: With dead ends: 14519 [2023-12-25 17:49:14,929 INFO L226 Difference]: Without dead ends: 9713 [2023-12-25 17:49:14,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6349 GetRequests, 6339 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:49:14,934 INFO L413 NwaCegarLoop]: 8136 mSDtfsCounter, 7349 mSDsluCounter, 15825 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7349 SdHoareTripleChecker+Valid, 23961 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 17:49:14,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7349 Valid, 23961 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2023-12-25 17:49:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 5223. [2023-12-25 17:49:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 1.6493680582152432) internal successors, (8613), 5222 states have internal predecessors, (8613), 0 states have call successors, (0), 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 17:49:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 8613 transitions. [2023-12-25 17:49:14,991 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 8613 transitions. Word has length 3175 [2023-12-25 17:49:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:14,993 INFO L495 AbstractCegarLoop]: Abstraction has 5223 states and 8613 transitions. [2023-12-25 17:49:14,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 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 17:49:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 8613 transitions. [2023-12-25 17:49:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3177 [2023-12-25 17:49:15,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:15,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:15,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:15,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-12-25 17:49:15,260 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:15,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2022400163, now seen corresponding path program 1 times [2023-12-25 17:49:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467079868] [2023-12-25 17:49:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:15,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319271460] [2023-12-25 17:49:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:15,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:15,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:15,478 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-25 17:49:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:18,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 14482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:18,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 112 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:19,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-25 17:49:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467079868] [2023-12-25 17:49:19,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319271460] [2023-12-25 17:49:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319271460] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:49:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485939258] [2023-12-25 17:49:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:49:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:49:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:19,206 INFO L87 Difference]: Start difference. First operand 5223 states and 8613 transitions. Second operand has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 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 17:49:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:19,588 INFO L93 Difference]: Finished difference Result 19058 states and 31545 transitions. [2023-12-25 17:49:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:19,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3176 [2023-12-25 17:49:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:19,599 INFO L225 Difference]: With dead ends: 19058 [2023-12-25 17:49:19,599 INFO L226 Difference]: Without dead ends: 14460 [2023-12-25 17:49:19,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6350 GetRequests, 6339 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:19,602 INFO L413 NwaCegarLoop]: 22490 mSDtfsCounter, 14813 mSDsluCounter, 52654 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14813 SdHoareTripleChecker+Valid, 75144 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:19,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14813 Valid, 75144 Invalid, 38 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14460 states. [2023-12-25 17:49:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14460 to 5225. [2023-12-25 17:49:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:19,661 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3176 [2023-12-25 17:49:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:19,663 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:19,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 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 17:49:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3178 [2023-12-25 17:49:19,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:19,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:19,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-12-25 17:49:19,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-12-25 17:49:19,944 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -299290941, now seen corresponding path program 1 times [2023-12-25 17:49:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164349088] [2023-12-25 17:49:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:20,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:20,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178929925] [2023-12-25 17:49:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:20,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:20,153 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:20,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-25 17:49:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:23,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 14485 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:49:23,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 108 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:23,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-25 17:49:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164349088] [2023-12-25 17:49:23,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178929925] [2023-12-25 17:49:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178929925] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:23,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:23,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:23,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671174667] [2023-12-25 17:49:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:23,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:23,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:23,882 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 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 17:49:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:24,017 INFO L93 Difference]: Finished difference Result 14257 states and 23624 transitions. [2023-12-25 17:49:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:49:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3177 [2023-12-25 17:49:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:24,027 INFO L225 Difference]: With dead ends: 14257 [2023-12-25 17:49:24,027 INFO L226 Difference]: Without dead ends: 9657 [2023-12-25 17:49:24,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6352 GetRequests, 6343 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:24,032 INFO L413 NwaCegarLoop]: 15024 mSDtfsCounter, 7346 mSDsluCounter, 22710 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7346 SdHoareTripleChecker+Valid, 37734 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:24,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7346 Valid, 37734 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9657 states. [2023-12-25 17:49:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9657 to 5225. [2023-12-25 17:49:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:24,087 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3177 [2023-12-25 17:49:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:24,089 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:24,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 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 17:49:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3179 [2023-12-25 17:49:24,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:24,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:24,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:24,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:24,356 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:24,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1179928029, now seen corresponding path program 1 times [2023-12-25 17:49:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348928713] [2023-12-25 17:49:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:24,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689912809] [2023-12-25 17:49:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:24,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:24,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:24,576 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:24,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-25 17:49:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:27,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 14488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:49:27,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 104 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:28,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 17:49:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348928713] [2023-12-25 17:49:28,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689912809] [2023-12-25 17:49:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689912809] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:28,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:49:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705514707] [2023-12-25 17:49:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:28,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:49:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:49:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:28,544 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 599.8) internal successors, (2999), 5 states have internal predecessors, (2999), 0 states have call successors, (0), 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 17:49:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:28,784 INFO L93 Difference]: Finished difference Result 19050 states and 31537 transitions. [2023-12-25 17:49:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 599.8) internal successors, (2999), 5 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3178 [2023-12-25 17:49:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:28,800 INFO L225 Difference]: With dead ends: 19050 [2023-12-25 17:49:28,800 INFO L226 Difference]: Without dead ends: 14450 [2023-12-25 17:49:28,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6354 GetRequests, 6343 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:28,807 INFO L413 NwaCegarLoop]: 22500 mSDtfsCounter, 14819 mSDsluCounter, 52674 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14819 SdHoareTripleChecker+Valid, 75174 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:28,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14819 Valid, 75174 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14450 states. [2023-12-25 17:49:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 5225. [2023-12-25 17:49:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:28,886 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3178 [2023-12-25 17:49:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:28,887 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 599.8) internal successors, (2999), 5 states have internal predecessors, (2999), 0 states have call successors, (0), 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 17:49:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:28,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3180 [2023-12-25 17:49:28,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:28,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:28,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:29,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:29,147 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:29,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash -483300481, now seen corresponding path program 1 times [2023-12-25 17:49:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732704953] [2023-12-25 17:49:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:29,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:29,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279710250] [2023-12-25 17:49:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:29,378 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:29,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-25 17:49:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:32,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 14491 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:49:32,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 100 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:32,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-25 17:49:33,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:33,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732704953] [2023-12-25 17:49:33,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:33,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279710250] [2023-12-25 17:49:33,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279710250] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:33,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:33,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153077057] [2023-12-25 17:49:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:33,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:33,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:33,228 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 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 17:49:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:33,365 INFO L93 Difference]: Finished difference Result 14269 states and 23644 transitions. [2023-12-25 17:49:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:49:33,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3179 [2023-12-25 17:49:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:33,376 INFO L225 Difference]: With dead ends: 14269 [2023-12-25 17:49:33,376 INFO L226 Difference]: Without dead ends: 9669 [2023-12-25 17:49:33,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6356 GetRequests, 6347 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:33,380 INFO L413 NwaCegarLoop]: 15034 mSDtfsCounter, 7352 mSDsluCounter, 22720 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7352 SdHoareTripleChecker+Valid, 37754 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:33,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7352 Valid, 37754 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2023-12-25 17:49:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 5225. [2023-12-25 17:49:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:33,438 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3179 [2023-12-25 17:49:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:33,439 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:33,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 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 17:49:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3181 [2023-12-25 17:49:33,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:33,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:33,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:33,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:33,716 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:33,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2073027549, now seen corresponding path program 1 times [2023-12-25 17:49:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489480214] [2023-12-25 17:49:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:33,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147646055] [2023-12-25 17:49:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:33,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:33,934 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:33,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-25 17:49:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:37,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 14494 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:37,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 96 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:37,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-25 17:49:37,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489480214] [2023-12-25 17:49:37,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147646055] [2023-12-25 17:49:37,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147646055] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:37,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:37,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:49:37,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584185135] [2023-12-25 17:49:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:37,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:49:37,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:37,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:49:37,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:37,822 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 599.0) internal successors, (2995), 5 states have internal predecessors, (2995), 0 states have call successors, (0), 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 17:49:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:38,075 INFO L93 Difference]: Finished difference Result 19040 states and 31531 transitions. [2023-12-25 17:49:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:38,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 599.0) internal successors, (2995), 5 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3180 [2023-12-25 17:49:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:38,092 INFO L225 Difference]: With dead ends: 19040 [2023-12-25 17:49:38,092 INFO L226 Difference]: Without dead ends: 14440 [2023-12-25 17:49:38,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6358 GetRequests, 6347 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:38,099 INFO L413 NwaCegarLoop]: 22510 mSDtfsCounter, 14825 mSDsluCounter, 52694 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14825 SdHoareTripleChecker+Valid, 75204 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:38,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14825 Valid, 75204 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:38,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14440 states. [2023-12-25 17:49:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14440 to 5225. [2023-12-25 17:49:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:38,179 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3180 [2023-12-25 17:49:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:38,180 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 599.0) internal successors, (2995), 5 states have internal predecessors, (2995), 0 states have call successors, (0), 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 17:49:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3182 [2023-12-25 17:49:38,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:38,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:38,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-12-25 17:49:38,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:38,453 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:38,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1053047739, now seen corresponding path program 1 times [2023-12-25 17:49:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:38,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620145852] [2023-12-25 17:49:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:38,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:38,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:38,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163430727] [2023-12-25 17:49:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:38,660 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:38,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-25 17:49:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:41,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 14497 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:49:41,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 92 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:42,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-12-25 17:49:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620145852] [2023-12-25 17:49:42,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163430727] [2023-12-25 17:49:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163430727] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:42,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768981356] [2023-12-25 17:49:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:42,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:42,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:42,519 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 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 17:49:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:42,661 INFO L93 Difference]: Finished difference Result 14281 states and 23664 transitions. [2023-12-25 17:49:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:49:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3181 [2023-12-25 17:49:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:42,671 INFO L225 Difference]: With dead ends: 14281 [2023-12-25 17:49:42,671 INFO L226 Difference]: Without dead ends: 9681 [2023-12-25 17:49:42,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6360 GetRequests, 6351 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:42,675 INFO L413 NwaCegarLoop]: 15044 mSDtfsCounter, 7358 mSDsluCounter, 22730 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7358 SdHoareTripleChecker+Valid, 37774 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:42,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7358 Valid, 37774 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9681 states. [2023-12-25 17:49:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9681 to 5225. [2023-12-25 17:49:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:42,728 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3181 [2023-12-25 17:49:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:42,730 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:42,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 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 17:49:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3183 [2023-12-25 17:49:42,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:42,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:42,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:43,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:43,008 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:43,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:43,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1303837021, now seen corresponding path program 1 times [2023-12-25 17:49:43,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:43,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289168204] [2023-12-25 17:49:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:43,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:43,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206247923] [2023-12-25 17:49:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:43,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:43,292 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:43,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-25 17:49:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:46,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 14500 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:49:46,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 88 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:46,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-25 17:49:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289168204] [2023-12-25 17:49:46,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206247923] [2023-12-25 17:49:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206247923] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:46,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:46,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:49:46,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658146991] [2023-12-25 17:49:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:49:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:49:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:46,997 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 598.2) internal successors, (2991), 5 states have internal predecessors, (2991), 0 states have call successors, (0), 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 17:49:47,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:47,266 INFO L93 Difference]: Finished difference Result 19030 states and 31525 transitions. [2023-12-25 17:49:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:47,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 598.2) internal successors, (2991), 5 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3182 [2023-12-25 17:49:47,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:47,283 INFO L225 Difference]: With dead ends: 19030 [2023-12-25 17:49:47,283 INFO L226 Difference]: Without dead ends: 14430 [2023-12-25 17:49:47,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6362 GetRequests, 6351 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:47,290 INFO L413 NwaCegarLoop]: 22520 mSDtfsCounter, 14831 mSDsluCounter, 52714 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14831 SdHoareTripleChecker+Valid, 75234 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:47,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14831 Valid, 75234 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:49:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14430 states. [2023-12-25 17:49:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14430 to 5225. [2023-12-25 17:49:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:47,369 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3182 [2023-12-25 17:49:47,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:47,371 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:47,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 598.2) internal successors, (2991), 5 states have internal predecessors, (2991), 0 states have call successors, (0), 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 17:49:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3184 [2023-12-25 17:49:47,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:47,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:47,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:47,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2023-12-25 17:49:47,652 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:47,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1594368137, now seen corresponding path program 1 times [2023-12-25 17:49:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778340715] [2023-12-25 17:49:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:47,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:47,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493048778] [2023-12-25 17:49:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:47,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:47,858 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:47,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-25 17:49:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:51,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 14503 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:49:51,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 84 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:51,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-25 17:49:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778340715] [2023-12-25 17:49:51,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493048778] [2023-12-25 17:49:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493048778] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:49:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976751708] [2023-12-25 17:49:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:51,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:49:51,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:49:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:51,549 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 4 states, 4 states have (on average 747.25) internal successors, (2989), 4 states have internal predecessors, (2989), 0 states have call successors, (0), 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 17:49:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:51,684 INFO L93 Difference]: Finished difference Result 14293 states and 23684 transitions. [2023-12-25 17:49:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:49:51,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 747.25) internal successors, (2989), 4 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3183 [2023-12-25 17:49:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:51,694 INFO L225 Difference]: With dead ends: 14293 [2023-12-25 17:49:51,694 INFO L226 Difference]: Without dead ends: 9693 [2023-12-25 17:49:51,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6364 GetRequests, 6355 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:49:51,698 INFO L413 NwaCegarLoop]: 15054 mSDtfsCounter, 7364 mSDsluCounter, 22740 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7364 SdHoareTripleChecker+Valid, 37794 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:51,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7364 Valid, 37794 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9693 states. [2023-12-25 17:49:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9693 to 5225. [2023-12-25 17:49:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:51,756 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3183 [2023-12-25 17:49:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:51,758 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:51,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 747.25) internal successors, (2989), 4 states have internal predecessors, (2989), 0 states have call successors, (0), 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 17:49:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3185 [2023-12-25 17:49:51,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:51,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:51,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:52,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-12-25 17:49:52,040 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:52,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:52,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1892612515, now seen corresponding path program 1 times [2023-12-25 17:49:52,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:52,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47731552] [2023-12-25 17:49:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:52,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:52,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147186263] [2023-12-25 17:49:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:52,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:52,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:52,252 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:52,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-25 17:49:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:49:55,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 14506 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:49:55,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:49:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 78 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:49:55,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:49:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 17:49:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:49:56,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47731552] [2023-12-25 17:49:56,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:49:56,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147186263] [2023-12-25 17:49:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147186263] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:49:56,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:49:56,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:49:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559012748] [2023-12-25 17:49:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:49:56,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:49:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:49:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:49:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:56,248 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 597.2) internal successors, (2986), 5 states have internal predecessors, (2986), 0 states have call successors, (0), 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 17:49:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:49:56,496 INFO L93 Difference]: Finished difference Result 19018 states and 31516 transitions. [2023-12-25 17:49:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:49:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 597.2) internal successors, (2986), 5 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3184 [2023-12-25 17:49:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:49:56,513 INFO L225 Difference]: With dead ends: 19018 [2023-12-25 17:49:56,513 INFO L226 Difference]: Without dead ends: 14418 [2023-12-25 17:49:56,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6366 GetRequests, 6355 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:49:56,520 INFO L413 NwaCegarLoop]: 22533 mSDtfsCounter, 14840 mSDsluCounter, 52740 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14840 SdHoareTripleChecker+Valid, 75273 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:49:56,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14840 Valid, 75273 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:49:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2023-12-25 17:49:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 5225. [2023-12-25 17:49:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:49:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:49:56,600 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3184 [2023-12-25 17:49:56,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:49:56,601 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:49:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 597.2) internal successors, (2986), 5 states have internal predecessors, (2986), 0 states have call successors, (0), 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 17:49:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:49:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3186 [2023-12-25 17:49:56,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:49:56,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:49:56,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-25 17:49:56,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:56,860 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:49:56,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:49:56,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1272484365, now seen corresponding path program 1 times [2023-12-25 17:49:56,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:49:56,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755545414] [2023-12-25 17:49:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:56,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:49:57,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:49:57,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281523082] [2023-12-25 17:49:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:49:57,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:49:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:49:57,069 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:49:57,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-25 17:50:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:00,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 14509 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:50:00,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 74 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:00,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:50:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-25 17:50:01,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755545414] [2023-12-25 17:50:01,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281523082] [2023-12-25 17:50:01,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281523082] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:50:01,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:50:01,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:50:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302741048] [2023-12-25 17:50:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:50:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:50:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:01,008 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 596.8) internal successors, (2984), 5 states have internal predecessors, (2984), 0 states have call successors, (0), 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 17:50:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:01,254 INFO L93 Difference]: Finished difference Result 19019 states and 31520 transitions. [2023-12-25 17:50:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:50:01,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 596.8) internal successors, (2984), 5 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3185 [2023-12-25 17:50:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:01,272 INFO L225 Difference]: With dead ends: 19019 [2023-12-25 17:50:01,272 INFO L226 Difference]: Without dead ends: 14419 [2023-12-25 17:50:01,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6368 GetRequests, 6357 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:01,279 INFO L413 NwaCegarLoop]: 22537 mSDtfsCounter, 14843 mSDsluCounter, 52748 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14843 SdHoareTripleChecker+Valid, 75285 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:01,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14843 Valid, 75285 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:50:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14419 states. [2023-12-25 17:50:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14419 to 5225. [2023-12-25 17:50:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:50:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:50:01,352 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3185 [2023-12-25 17:50:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:50:01,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 596.8) internal successors, (2984), 5 states have internal predecessors, (2984), 0 states have call successors, (0), 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 17:50:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:50:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3187 [2023-12-25 17:50:01,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:01,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:01,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:01,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:01,633 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:01,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash -234907873, now seen corresponding path program 1 times [2023-12-25 17:50:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:01,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228533444] [2023-12-25 17:50:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:01,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:01,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534200517] [2023-12-25 17:50:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:01,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:01,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:01,844 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:01,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-25 17:50:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:05,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 14513 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:50:05,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 68 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:05,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:50:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-25 17:50:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228533444] [2023-12-25 17:50:05,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534200517] [2023-12-25 17:50:05,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534200517] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:50:05,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:50:05,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 17:50:05,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389631892] [2023-12-25 17:50:05,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:05,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:50:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:50:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:50:05,695 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 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 17:50:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:05,831 INFO L93 Difference]: Finished difference Result 14317 states and 23724 transitions. [2023-12-25 17:50:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:50:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3186 [2023-12-25 17:50:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:05,841 INFO L225 Difference]: With dead ends: 14317 [2023-12-25 17:50:05,842 INFO L226 Difference]: Without dead ends: 9717 [2023-12-25 17:50:05,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6370 GetRequests, 6361 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:50:05,846 INFO L413 NwaCegarLoop]: 15074 mSDtfsCounter, 7379 mSDsluCounter, 22760 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7379 SdHoareTripleChecker+Valid, 37834 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:05,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7379 Valid, 37834 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:50:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9717 states. [2023-12-25 17:50:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9717 to 5225. [2023-12-25 17:50:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:50:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:50:05,922 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3186 [2023-12-25 17:50:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:05,923 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:50:05,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 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 17:50:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:50:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3188 [2023-12-25 17:50:05,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:05,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:06,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-12-25 17:50:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-12-25 17:50:06,205 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:06,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1141165041, now seen corresponding path program 1 times [2023-12-25 17:50:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:06,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616354369] [2023-12-25 17:50:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:06,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614209838] [2023-12-25 17:50:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:06,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:06,492 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:06,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-25 17:50:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:09,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 14516 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:50:09,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 64 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:10,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:50:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-12-25 17:50:10,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616354369] [2023-12-25 17:50:10,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614209838] [2023-12-25 17:50:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614209838] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:50:10,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:50:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:50:10,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88048579] [2023-12-25 17:50:10,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:10,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:50:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:50:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:10,298 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 595.6) internal successors, (2978), 5 states have internal predecessors, (2978), 0 states have call successors, (0), 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 17:50:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:10,556 INFO L93 Difference]: Finished difference Result 19007 states and 31512 transitions. [2023-12-25 17:50:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:50:10,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 595.6) internal successors, (2978), 5 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3187 [2023-12-25 17:50:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:10,575 INFO L225 Difference]: With dead ends: 19007 [2023-12-25 17:50:10,576 INFO L226 Difference]: Without dead ends: 14407 [2023-12-25 17:50:10,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6372 GetRequests, 6361 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:10,584 INFO L413 NwaCegarLoop]: 22550 mSDtfsCounter, 14852 mSDsluCounter, 52774 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14852 SdHoareTripleChecker+Valid, 75324 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:10,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14852 Valid, 75324 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:50:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2023-12-25 17:50:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 5225. [2023-12-25 17:50:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:50:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:50:10,667 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3187 [2023-12-25 17:50:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:10,669 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:50:10,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 595.6) internal successors, (2978), 5 states have internal predecessors, (2978), 0 states have call successors, (0), 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 17:50:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:50:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3189 [2023-12-25 17:50:10,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:10,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:10,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-12-25 17:50:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:10,939 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:10,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2094448285, now seen corresponding path program 1 times [2023-12-25 17:50:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165242231] [2023-12-25 17:50:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:10,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:11,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:11,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880314563] [2023-12-25 17:50:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:11,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:11,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:11,164 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:11,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-25 17:50:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:14,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 14519 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:50:14,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 58 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:14,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:50:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-25 17:50:15,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165242231] [2023-12-25 17:50:15,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880314563] [2023-12-25 17:50:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880314563] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:50:15,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:50:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:50:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830339777] [2023-12-25 17:50:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:15,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:50:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:50:15,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:15,029 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 595.0) internal successors, (2975), 5 states have internal predecessors, (2975), 0 states have call successors, (0), 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 17:50:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:15,276 INFO L93 Difference]: Finished difference Result 18996 states and 31499 transitions. [2023-12-25 17:50:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:50:15,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 595.0) internal successors, (2975), 5 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3188 [2023-12-25 17:50:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:15,292 INFO L225 Difference]: With dead ends: 18996 [2023-12-25 17:50:15,292 INFO L226 Difference]: Without dead ends: 14396 [2023-12-25 17:50:15,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6374 GetRequests, 6363 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:15,298 INFO L413 NwaCegarLoop]: 22557 mSDtfsCounter, 14858 mSDsluCounter, 52788 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14858 SdHoareTripleChecker+Valid, 75345 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:15,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14858 Valid, 75345 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:50:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14396 states. [2023-12-25 17:50:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14396 to 5225. [2023-12-25 17:50:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:50:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:50:15,368 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3188 [2023-12-25 17:50:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:15,369 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:50:15,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 595.0) internal successors, (2975), 5 states have internal predecessors, (2975), 0 states have call successors, (0), 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 17:50:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:50:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3190 [2023-12-25 17:50:15,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:15,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:15,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:15,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:15,636 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:15,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1540789897, now seen corresponding path program 1 times [2023-12-25 17:50:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:15,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861354293] [2023-12-25 17:50:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:15,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:15,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861317339] [2023-12-25 17:50:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:15,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:15,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:15,843 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:15,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-25 17:50:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:19,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 14523 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:50:19,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 54 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:19,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:50:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-25 17:50:19,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861354293] [2023-12-25 17:50:19,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861317339] [2023-12-25 17:50:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861317339] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:50:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:50:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 17:50:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070599601] [2023-12-25 17:50:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:19,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:50:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:19,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:50:19,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:19,731 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 5 states, 5 states have (on average 594.4) internal successors, (2972), 5 states have internal predecessors, (2972), 0 states have call successors, (0), 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 17:50:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:19,988 INFO L93 Difference]: Finished difference Result 18999 states and 31506 transitions. [2023-12-25 17:50:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:50:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 594.4) internal successors, (2972), 5 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3189 [2023-12-25 17:50:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:20,005 INFO L225 Difference]: With dead ends: 18999 [2023-12-25 17:50:20,005 INFO L226 Difference]: Without dead ends: 14399 [2023-12-25 17:50:20,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6376 GetRequests, 6365 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:50:20,013 INFO L413 NwaCegarLoop]: 22562 mSDtfsCounter, 14861 mSDsluCounter, 52798 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14861 SdHoareTripleChecker+Valid, 75360 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:20,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14861 Valid, 75360 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:50:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14399 states. [2023-12-25 17:50:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14399 to 5225. [2023-12-25 17:50:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 1.6491194486983154) internal successors, (8615), 5224 states have internal predecessors, (8615), 0 states have call successors, (0), 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 17:50:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8615 transitions. [2023-12-25 17:50:20,099 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8615 transitions. Word has length 3189 [2023-12-25 17:50:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:20,101 INFO L495 AbstractCegarLoop]: Abstraction has 5225 states and 8615 transitions. [2023-12-25 17:50:20,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 594.4) internal successors, (2972), 5 states have internal predecessors, (2972), 0 states have call successors, (0), 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 17:50:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8615 transitions. [2023-12-25 17:50:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:20,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:20,155 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:20,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:20,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2023-12-25 17:50:20,364 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:20,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:20,365 INFO L85 PathProgramCache]: Analyzing trace with hash -562471387, now seen corresponding path program 1 times [2023-12-25 17:50:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:20,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349997160] [2023-12-25 17:50:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:20,576 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762330710] [2023-12-25 17:50:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:20,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:20,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:20,578 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:20,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-25 17:50:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:24,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:24,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:24,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349997160] [2023-12-25 17:50:24,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762330710] [2023-12-25 17:50:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762330710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:24,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:24,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632298263] [2023-12-25 17:50:24,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:24,117 INFO L87 Difference]: Start difference. First operand 5225 states and 8615 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:24,319 INFO L93 Difference]: Finished difference Result 14424 states and 23898 transitions. [2023-12-25 17:50:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:24,328 INFO L225 Difference]: With dead ends: 14424 [2023-12-25 17:50:24,328 INFO L226 Difference]: Without dead ends: 9824 [2023-12-25 17:50:24,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:24,333 INFO L413 NwaCegarLoop]: 8449 mSDtfsCounter, 7472 mSDsluCounter, 33011 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 41460 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:24,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 41460 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9824 states. [2023-12-25 17:50:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9824 to 5230. [2023-12-25 17:50:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 1.6484987569324918) internal successors, (8620), 5229 states have internal predecessors, (8620), 0 states have call successors, (0), 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 17:50:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 8620 transitions. [2023-12-25 17:50:24,389 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 8620 transitions. Word has length 3190 [2023-12-25 17:50:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:24,389 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 8620 transitions. [2023-12-25 17:50:24,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 8620 transitions. [2023-12-25 17:50:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:24,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:24,444 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:24,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:24,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:24,661 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:24,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 972247587, now seen corresponding path program 1 times [2023-12-25 17:50:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:24,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105961358] [2023-12-25 17:50:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:24,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:24,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896013094] [2023-12-25 17:50:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:24,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:24,867 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:24,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-25 17:50:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:28,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:28,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:28,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:28,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:28,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105961358] [2023-12-25 17:50:28,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:28,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896013094] [2023-12-25 17:50:28,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896013094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:28,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740499978] [2023-12-25 17:50:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:28,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:28,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:28,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:28,292 INFO L87 Difference]: Start difference. First operand 5230 states and 8620 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:28,606 INFO L93 Difference]: Finished difference Result 14439 states and 23913 transitions. [2023-12-25 17:50:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:28,613 INFO L225 Difference]: With dead ends: 14439 [2023-12-25 17:50:28,613 INFO L226 Difference]: Without dead ends: 9834 [2023-12-25 17:50:28,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:28,615 INFO L413 NwaCegarLoop]: 8730 mSDtfsCounter, 7472 mSDsluCounter, 33854 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 42584 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:28,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 42584 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2023-12-25 17:50:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 5235. [2023-12-25 17:50:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 1.6478792510508216) internal successors, (8625), 5234 states have internal predecessors, (8625), 0 states have call successors, (0), 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 17:50:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 8625 transitions. [2023-12-25 17:50:28,671 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 8625 transitions. Word has length 3190 [2023-12-25 17:50:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:28,672 INFO L495 AbstractCegarLoop]: Abstraction has 5235 states and 8625 transitions. [2023-12-25 17:50:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 8625 transitions. [2023-12-25 17:50:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:28,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:28,727 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:28,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:28,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:28,940 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:28,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:28,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1341035937, now seen corresponding path program 1 times [2023-12-25 17:50:28,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:28,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53960] [2023-12-25 17:50:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:28,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:29,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064909952] [2023-12-25 17:50:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:29,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:29,151 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:29,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-12-25 17:50:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:32,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:32,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:32,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:32,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:32,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53960] [2023-12-25 17:50:32,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:32,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064909952] [2023-12-25 17:50:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064909952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:32,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:32,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848467818] [2023-12-25 17:50:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:32,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:32,511 INFO L87 Difference]: Start difference. First operand 5235 states and 8625 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:32,707 INFO L93 Difference]: Finished difference Result 14453 states and 23927 transitions. [2023-12-25 17:50:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:32,716 INFO L225 Difference]: With dead ends: 14453 [2023-12-25 17:50:32,716 INFO L226 Difference]: Without dead ends: 9843 [2023-12-25 17:50:32,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:32,721 INFO L413 NwaCegarLoop]: 8809 mSDtfsCounter, 7472 mSDsluCounter, 34091 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 42900 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:32,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 42900 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9843 states. [2023-12-25 17:50:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9843 to 5240. [2023-12-25 17:50:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5240 states, 5239 states have (on average 1.64726092765795) internal successors, (8630), 5239 states have internal predecessors, (8630), 0 states have call successors, (0), 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 17:50:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5240 states to 5240 states and 8630 transitions. [2023-12-25 17:50:32,779 INFO L78 Accepts]: Start accepts. Automaton has 5240 states and 8630 transitions. Word has length 3190 [2023-12-25 17:50:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:32,779 INFO L495 AbstractCegarLoop]: Abstraction has 5240 states and 8630 transitions. [2023-12-25 17:50:32,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:32,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5240 states and 8630 transitions. [2023-12-25 17:50:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:32,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:32,833 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:32,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:33,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2023-12-25 17:50:33,060 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:33,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1786682849, now seen corresponding path program 1 times [2023-12-25 17:50:33,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:33,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544130121] [2023-12-25 17:50:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:33,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:33,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:33,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59033260] [2023-12-25 17:50:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:33,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:33,269 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:33,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-12-25 17:50:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:36,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:36,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:36,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:36,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544130121] [2023-12-25 17:50:36,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59033260] [2023-12-25 17:50:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59033260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:36,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:36,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339820015] [2023-12-25 17:50:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:36,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:36,822 INFO L87 Difference]: Start difference. First operand 5240 states and 8630 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:37,045 INFO L93 Difference]: Finished difference Result 14469 states and 23943 transitions. [2023-12-25 17:50:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:37,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:37,054 INFO L225 Difference]: With dead ends: 14469 [2023-12-25 17:50:37,054 INFO L226 Difference]: Without dead ends: 9854 [2023-12-25 17:50:37,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:37,059 INFO L413 NwaCegarLoop]: 10355 mSDtfsCounter, 7472 mSDsluCounter, 38729 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 49084 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:37,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 49084 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9854 states. [2023-12-25 17:50:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9854 to 5245. [2023-12-25 17:50:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 1.6466437833714722) internal successors, (8635), 5244 states have internal predecessors, (8635), 0 states have call successors, (0), 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 17:50:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 8635 transitions. [2023-12-25 17:50:37,119 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 8635 transitions. Word has length 3190 [2023-12-25 17:50:37,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:37,120 INFO L495 AbstractCegarLoop]: Abstraction has 5245 states and 8635 transitions. [2023-12-25 17:50:37,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 8635 transitions. [2023-12-25 17:50:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:37,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:37,175 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:37,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-12-25 17:50:37,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:37,401 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:37,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash -849224419, now seen corresponding path program 1 times [2023-12-25 17:50:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340161277] [2023-12-25 17:50:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:37,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:37,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376714310] [2023-12-25 17:50:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:37,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:37,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:37,625 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:37,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-12-25 17:50:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:40,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:40,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:41,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340161277] [2023-12-25 17:50:41,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376714310] [2023-12-25 17:50:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376714310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978420780] [2023-12-25 17:50:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:41,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:41,038 INFO L87 Difference]: Start difference. First operand 5245 states and 8635 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:41,253 INFO L93 Difference]: Finished difference Result 14483 states and 23957 transitions. [2023-12-25 17:50:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:41,263 INFO L225 Difference]: With dead ends: 14483 [2023-12-25 17:50:41,263 INFO L226 Difference]: Without dead ends: 9863 [2023-12-25 17:50:41,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:41,269 INFO L413 NwaCegarLoop]: 10514 mSDtfsCounter, 7472 mSDsluCounter, 39206 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 49720 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:41,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 49720 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9863 states. [2023-12-25 17:50:41,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9863 to 5250. [2023-12-25 17:50:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 5249 states have (on average 1.6460278148218708) internal successors, (8640), 5249 states have internal predecessors, (8640), 0 states have call successors, (0), 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 17:50:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 8640 transitions. [2023-12-25 17:50:41,333 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 8640 transitions. Word has length 3190 [2023-12-25 17:50:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:41,334 INFO L495 AbstractCegarLoop]: Abstraction has 5250 states and 8640 transitions. [2023-12-25 17:50:41,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 8640 transitions. [2023-12-25 17:50:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:41,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:41,389 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:41,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:41,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:41,616 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:41,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1043359461, now seen corresponding path program 1 times [2023-12-25 17:50:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:41,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35468163] [2023-12-25 17:50:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:41,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:41,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:41,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008875622] [2023-12-25 17:50:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:41,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:41,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:41,841 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:41,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-12-25 17:50:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:45,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:45,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:45,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35468163] [2023-12-25 17:50:45,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008875622] [2023-12-25 17:50:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008875622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:45,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942180310] [2023-12-25 17:50:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:45,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:45,352 INFO L87 Difference]: Start difference. First operand 5250 states and 8640 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:45,563 INFO L93 Difference]: Finished difference Result 14498 states and 23972 transitions. [2023-12-25 17:50:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:45,573 INFO L225 Difference]: With dead ends: 14498 [2023-12-25 17:50:45,573 INFO L226 Difference]: Without dead ends: 9873 [2023-12-25 17:50:45,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:45,578 INFO L413 NwaCegarLoop]: 10735 mSDtfsCounter, 7472 mSDsluCounter, 39869 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 50604 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 50604 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2023-12-25 17:50:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 5255. [2023-12-25 17:50:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 1.6454130186524554) internal successors, (8645), 5254 states have internal predecessors, (8645), 0 states have call successors, (0), 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 17:50:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 8645 transitions. [2023-12-25 17:50:45,642 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 8645 transitions. Word has length 3190 [2023-12-25 17:50:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 5255 states and 8645 transitions. [2023-12-25 17:50:45,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 8645 transitions. [2023-12-25 17:50:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:45,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:45,697 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:45,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:45,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:45,898 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:45,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash 377850521, now seen corresponding path program 1 times [2023-12-25 17:50:45,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504022777] [2023-12-25 17:50:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:45,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:46,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:46,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731111000] [2023-12-25 17:50:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:46,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:46,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:46,122 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:46,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-12-25 17:50:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:49,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:49,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:49,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504022777] [2023-12-25 17:50:49,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731111000] [2023-12-25 17:50:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731111000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852354130] [2023-12-25 17:50:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:49,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:49,726 INFO L87 Difference]: Start difference. First operand 5255 states and 8645 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:49,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:49,983 INFO L93 Difference]: Finished difference Result 14513 states and 23987 transitions. [2023-12-25 17:50:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:49,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:49,997 INFO L225 Difference]: With dead ends: 14513 [2023-12-25 17:50:49,997 INFO L226 Difference]: Without dead ends: 9883 [2023-12-25 17:50:50,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:50,005 INFO L413 NwaCegarLoop]: 11919 mSDtfsCounter, 7472 mSDsluCounter, 43421 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 55340 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:50,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 55340 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2023-12-25 17:50:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 5260. [2023-12-25 17:50:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.6447993915193002) internal successors, (8650), 5259 states have internal predecessors, (8650), 0 states have call successors, (0), 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 17:50:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 8650 transitions. [2023-12-25 17:50:50,102 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 8650 transitions. Word has length 3190 [2023-12-25 17:50:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:50,103 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 8650 transitions. [2023-12-25 17:50:50,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 8650 transitions. [2023-12-25 17:50:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:50,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:50,169 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:50,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-12-25 17:50:50,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2023-12-25 17:50:50,385 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:50,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1246587881, now seen corresponding path program 1 times [2023-12-25 17:50:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519081327] [2023-12-25 17:50:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:50,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:50,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:50,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377842815] [2023-12-25 17:50:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:50,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:50,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:50,650 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:50,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-12-25 17:50:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:54,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:50:54,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:50:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:50:54,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:50:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:50:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519081327] [2023-12-25 17:50:54,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:50:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377842815] [2023-12-25 17:50:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377842815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:50:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:50:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:50:54,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458176302] [2023-12-25 17:50:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:50:54,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:50:54,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:50:54,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:50:54,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:50:54,395 INFO L87 Difference]: Start difference. First operand 5260 states and 8650 transitions. Second operand has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:50:54,618 INFO L93 Difference]: Finished difference Result 14528 states and 24002 transitions. [2023-12-25 17:50:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:50:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:50:54,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:50:54,628 INFO L225 Difference]: With dead ends: 14528 [2023-12-25 17:50:54,628 INFO L226 Difference]: Without dead ends: 9893 [2023-12-25 17:50:54,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3192 GetRequests, 3186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:50:54,632 INFO L413 NwaCegarLoop]: 12180 mSDtfsCounter, 7472 mSDsluCounter, 44204 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7472 SdHoareTripleChecker+Valid, 56384 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:50:54,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7472 Valid, 56384 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:50:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2023-12-25 17:50:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5265. [2023-12-25 17:50:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 1.6441869300911853) internal successors, (8655), 5264 states have internal predecessors, (8655), 0 states have call successors, (0), 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 17:50:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 8655 transitions. [2023-12-25 17:50:54,690 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 8655 transitions. Word has length 3190 [2023-12-25 17:50:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:50:54,691 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 8655 transitions. [2023-12-25 17:50:54,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 531.6666666666666) internal successors, (3190), 6 states have internal predecessors, (3190), 0 states have call successors, (0), 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 17:50:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 8655 transitions. [2023-12-25 17:50:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3191 [2023-12-25 17:50:54,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:50:54,745 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, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:50:54,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-12-25 17:50:54,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:54,964 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:50:54,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:50:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1115189013, now seen corresponding path program 1 times [2023-12-25 17:50:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:50:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633363632] [2023-12-25 17:50:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:50:55,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:50:55,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231220480] [2023-12-25 17:50:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:50:55,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:50:55,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:50:55,172 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:50:55,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-12-25 17:50:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:50:58,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 14526 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 17:50:58,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:51:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 125 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:51:01,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:51:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 175 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:51:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:51:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633363632] [2023-12-25 17:51:04,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:51:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231220480] [2023-12-25 17:51:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231220480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:51:04,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:51:04,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-12-25 17:51:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672477029] [2023-12-25 17:51:04,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:51:04,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 17:51:04,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:51:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 17:51:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:51:04,614 INFO L87 Difference]: Start difference. First operand 5265 states and 8655 transitions. Second operand has 20 states, 20 states have (on average 310.55) internal successors, (6211), 20 states have internal predecessors, (6211), 0 states have call successors, (0), 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 17:51:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:51:16,071 INFO L93 Difference]: Finished difference Result 33445 states and 55037 transitions. [2023-12-25 17:51:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 17:51:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 310.55) internal successors, (6211), 20 states have internal predecessors, (6211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3190 [2023-12-25 17:51:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:51:16,095 INFO L225 Difference]: With dead ends: 33445 [2023-12-25 17:51:16,096 INFO L226 Difference]: Without dead ends: 28805 [2023-12-25 17:51:16,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6405 GetRequests, 6367 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 17:51:16,101 INFO L413 NwaCegarLoop]: 20400 mSDtfsCounter, 122116 mSDsluCounter, 162719 mSDsCounter, 0 mSdLazyCounter, 21549 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122116 SdHoareTripleChecker+Valid, 183119 SdHoareTripleChecker+Invalid, 21973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 21549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:51:16,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122116 Valid, 183119 Invalid, 21973 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [424 Valid, 21549 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-25 17:51:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28805 states. [2023-12-25 17:51:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28805 to 10692. [2023-12-25 17:51:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10692 states, 10691 states have (on average 1.6446543821906277) internal successors, (17583), 10691 states have internal predecessors, (17583), 0 states have call successors, (0), 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 17:51:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 17583 transitions. [2023-12-25 17:51:16,270 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 17583 transitions. Word has length 3190 [2023-12-25 17:51:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:51:16,272 INFO L495 AbstractCegarLoop]: Abstraction has 10692 states and 17583 transitions. [2023-12-25 17:51:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 310.55) internal successors, (6211), 20 states have internal predecessors, (6211), 0 states have call successors, (0), 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 17:51:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 17583 transitions. [2023-12-25 17:51:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3192 [2023-12-25 17:51:16,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:51:16,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:51:16,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-12-25 17:51:16,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:51:16,553 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:51:16,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:51:16,553 INFO L85 PathProgramCache]: Analyzing trace with hash -478692959, now seen corresponding path program 1 times [2023-12-25 17:51:16,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:51:16,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996418614] [2023-12-25 17:51:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:51:16,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:51:16,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:51:16,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793013400] [2023-12-25 17:51:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:51:16,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:51:16,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:51:16,762 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:51:16,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-12-25 17:51:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:51:20,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 14529 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 17:51:20,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:51:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 88 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:51:23,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:51:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 156 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:51:26,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:51:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996418614] [2023-12-25 17:51:26,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:51:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793013400] [2023-12-25 17:51:26,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793013400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:51:26,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:51:26,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2023-12-25 17:51:26,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020638237] [2023-12-25 17:51:26,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:51:26,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 17:51:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:51:26,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 17:51:26,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-25 17:51:26,227 INFO L87 Difference]: Start difference. First operand 10692 states and 17583 transitions. Second operand has 22 states, 22 states have (on average 284.5) internal successors, (6259), 22 states have internal predecessors, (6259), 0 states have call successors, (0), 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 17:51:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:51:42,096 INFO L93 Difference]: Finished difference Result 74244 states and 122539 transitions. [2023-12-25 17:51:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 17:51:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 284.5) internal successors, (6259), 22 states have internal predecessors, (6259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3191 [2023-12-25 17:51:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:51:42,151 INFO L225 Difference]: With dead ends: 74244 [2023-12-25 17:51:42,151 INFO L226 Difference]: Without dead ends: 64594 [2023-12-25 17:51:42,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6415 GetRequests, 6368 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=478, Invalid=1874, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 17:51:42,162 INFO L413 NwaCegarLoop]: 19655 mSDtfsCounter, 122334 mSDsluCounter, 176128 mSDsCounter, 0 mSdLazyCounter, 33507 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122334 SdHoareTripleChecker+Valid, 195783 SdHoareTripleChecker+Invalid, 33514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-25 17:51:42,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122334 Valid, 195783 Invalid, 33514 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7 Valid, 33507 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-12-25 17:51:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64594 states. [2023-12-25 17:51:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64594 to 16518. [2023-12-25 17:51:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16518 states, 16517 states have (on average 1.6453351092813464) internal successors, (27176), 16517 states have internal predecessors, (27176), 0 states have call successors, (0), 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 17:51:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16518 states to 16518 states and 27176 transitions. [2023-12-25 17:51:42,548 INFO L78 Accepts]: Start accepts. Automaton has 16518 states and 27176 transitions. Word has length 3191 [2023-12-25 17:51:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:51:42,550 INFO L495 AbstractCegarLoop]: Abstraction has 16518 states and 27176 transitions. [2023-12-25 17:51:42,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 284.5) internal successors, (6259), 22 states have internal predecessors, (6259), 0 states have call successors, (0), 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 17:51:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 16518 states and 27176 transitions. [2023-12-25 17:51:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3193 [2023-12-25 17:51:42,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:51:42,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:51:42,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-12-25 17:51:42,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-12-25 17:51:42,820 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:51:42,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:51:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash 857383805, now seen corresponding path program 1 times [2023-12-25 17:51:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:51:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028699518] [2023-12-25 17:51:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:51:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:51:43,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:51:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117293053] [2023-12-25 17:51:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:51:43,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:51:43,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:51:43,036 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:51:43,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-12-25 17:51:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:51:46,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 14533 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 17:51:46,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:51:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 76 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:51:48,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:51:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 150 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:51:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:51:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028699518] [2023-12-25 17:51:52,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:51:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117293053] [2023-12-25 17:51:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117293053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:51:52,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:51:52,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-12-25 17:51:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662323332] [2023-12-25 17:51:52,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:51:52,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 17:51:52,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:51:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 17:51:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:51:52,046 INFO L87 Difference]: Start difference. First operand 16518 states and 27176 transitions. Second operand has 20 states, 20 states have (on average 313.75) internal successors, (6275), 20 states have internal predecessors, (6275), 0 states have call successors, (0), 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 17:52:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:52:02,373 INFO L93 Difference]: Finished difference Result 84628 states and 139720 transitions. [2023-12-25 17:52:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 17:52:02,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 313.75) internal successors, (6275), 20 states have internal predecessors, (6275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3192 [2023-12-25 17:52:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:52:02,430 INFO L225 Difference]: With dead ends: 84628 [2023-12-25 17:52:02,430 INFO L226 Difference]: Without dead ends: 69542 [2023-12-25 17:52:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6404 GetRequests, 6369 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=1011, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 17:52:02,439 INFO L413 NwaCegarLoop]: 13220 mSDtfsCounter, 92563 mSDsluCounter, 111963 mSDsCounter, 0 mSdLazyCounter, 22463 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92563 SdHoareTripleChecker+Valid, 125183 SdHoareTripleChecker+Invalid, 22468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:52:02,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92563 Valid, 125183 Invalid, 22468 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5 Valid, 22463 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-25 17:52:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69542 states. [2023-12-25 17:52:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69542 to 22767. [2023-12-25 17:52:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22767 states, 22766 states have (on average 1.6460511288763946) internal successors, (37474), 22766 states have internal predecessors, (37474), 0 states have call successors, (0), 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 17:52:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22767 states to 22767 states and 37474 transitions. [2023-12-25 17:52:02,945 INFO L78 Accepts]: Start accepts. Automaton has 22767 states and 37474 transitions. Word has length 3192 [2023-12-25 17:52:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:52:02,946 INFO L495 AbstractCegarLoop]: Abstraction has 22767 states and 37474 transitions. [2023-12-25 17:52:02,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 313.75) internal successors, (6275), 20 states have internal predecessors, (6275), 0 states have call successors, (0), 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 17:52:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 22767 states and 37474 transitions. [2023-12-25 17:52:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3194 [2023-12-25 17:52:03,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:52:03,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 17:52:03,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-12-25 17:52:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-12-25 17:52:03,224 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:52:03,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:52:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1986346353, now seen corresponding path program 1 times [2023-12-25 17:52:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:52:03,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218871776] [2023-12-25 17:52:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:52:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:52:03,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:52:03,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241327010] [2023-12-25 17:52:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:52:03,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:52:03,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:52:03,424 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:52:03,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-12-25 17:52:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:52:06,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 14536 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-25 17:52:06,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:52:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 64 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:52:25,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:52:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 104 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:52:42,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:52:42,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218871776] [2023-12-25 17:52:42,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:52:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241327010] [2023-12-25 17:52:42,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241327010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:52:42,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:52:42,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31] total 58 [2023-12-25 17:52:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195789174] [2023-12-25 17:52:42,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:52:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-25 17:52:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:52:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-25 17:52:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=2831, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 17:52:42,678 INFO L87 Difference]: Start difference. First operand 22767 states and 37474 transitions. Second operand has 58 states, 58 states have (on average 108.70689655172414) internal successors, (6305), 58 states have internal predecessors, (6305), 0 states have call successors, (0), 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 17:57:42,290 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-25 17:57:42,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6622 GetRequests, 6327 SyntacticMatches, 1 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30491 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=7412, Invalid=79908, Unknown=0, NotChecked=0, Total=87320 [2023-12-25 17:57:42,295 INFO L413 NwaCegarLoop]: 92129 mSDtfsCounter, 369098 mSDsluCounter, 2715741 mSDsCounter, 0 mSdLazyCounter, 305562 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369098 SdHoareTripleChecker+Valid, 2807870 SdHoareTripleChecker+Invalid, 305602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.3s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 305562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 196.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:57:42,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369098 Valid, 2807870 Invalid, 305602 Unknown, 0 Unchecked, 6.3s Time], IncrementalHoareTripleChecker [39 Valid, 305562 Invalid, 0 Unknown, 0 Unchecked, 196.9s Time] [2023-12-25 17:57:42,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-25 17:57:42,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-12-25 17:57:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:57:42,496 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 37 more [2023-12-25 17:57:42,499 INFO L158 Benchmark]: Toolchain (without parser) took 817265.16ms. Allocated memory was 211.8MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 144.3MB in the beginning and 572.8MB in the end (delta: -428.5MB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-25 17:57:42,499 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 17:57:42,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1042.16ms. Allocated memory was 211.8MB in the beginning and 273.7MB in the end (delta: 61.9MB). Free memory was 144.1MB in the beginning and 157.6MB in the end (delta: -13.5MB). Peak memory consumption was 102.9MB. Max. memory is 8.0GB. [2023-12-25 17:57:42,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 1212.37ms. Allocated memory was 273.7MB in the beginning and 1.0GB in the end (delta: 735.1MB). Free memory was 157.6MB in the beginning and 725.4MB in the end (delta: -567.8MB). Peak memory consumption was 201.3MB. Max. memory is 8.0GB. [2023-12-25 17:57:42,499 INFO L158 Benchmark]: Boogie Preprocessor took 1505.40ms. Allocated memory is still 1.0GB. Free memory was 725.4MB in the beginning and 635.7MB in the end (delta: 89.7MB). Peak memory consumption was 112.7MB. Max. memory is 8.0GB. [2023-12-25 17:57:42,500 INFO L158 Benchmark]: RCFGBuilder took 8141.16ms. Allocated memory was 1.0GB in the beginning and 3.5GB in the end (delta: 2.5GB). Free memory was 635.7MB in the beginning and 2.5GB in the end (delta: -1.9GB). Peak memory consumption was 620.8MB. Max. memory is 8.0GB. [2023-12-25 17:57:42,500 INFO L158 Benchmark]: TraceAbstraction took 805358.54ms. Allocated memory is still 3.5GB. Free memory was 2.5GB in the beginning and 572.8MB in the end (delta: 2.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-25 17:57:42,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1042.16ms. Allocated memory was 211.8MB in the beginning and 273.7MB in the end (delta: 61.9MB). Free memory was 144.1MB in the beginning and 157.6MB in the end (delta: -13.5MB). Peak memory consumption was 102.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 1212.37ms. Allocated memory was 273.7MB in the beginning and 1.0GB in the end (delta: 735.1MB). Free memory was 157.6MB in the beginning and 725.4MB in the end (delta: -567.8MB). Peak memory consumption was 201.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 1505.40ms. Allocated memory is still 1.0GB. Free memory was 725.4MB in the beginning and 635.7MB in the end (delta: 89.7MB). Peak memory consumption was 112.7MB. Max. memory is 8.0GB. * RCFGBuilder took 8141.16ms. Allocated memory was 1.0GB in the beginning and 3.5GB in the end (delta: 2.5GB). Free memory was 635.7MB in the beginning and 2.5GB in the end (delta: -1.9GB). Peak memory consumption was 620.8MB. Max. memory is 8.0GB. * TraceAbstraction took 805358.54ms. Allocated memory is still 3.5GB. Free memory was 2.5GB in the beginning and 572.8MB in the end (delta: 2.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...