/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.pgm_protocol.8.prop5-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 21:01:33,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 21:01:33,976 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 21:01:33,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 21:01:33,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 21:01:33,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 21:01:33,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 21:01:33,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 21:01:33,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 21:01:33,995 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 21:01:33,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 21:01:33,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 21:01:33,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 21:01:33,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 21:01:33,996 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 21:01:33,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 21:01:33,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 21:01:33,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 21:01:33,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 21:01:33,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 21:01:33,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 21:01:33,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 21:01:33,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 21:01:33,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 21:01:33,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 21:01:33,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 21:01:33,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 21:01:33,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 21:01:33,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 21:01:33,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 21:01:33,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 21:01:34,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 21:01:34,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 21:01:34,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 21:01:34,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 21:01:34,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 21:01:34,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 21:01:34,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 21:01:34,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 21:01:34,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 21:01:34,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 21:01:34,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 21:01:34,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 21:01:34,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 21:01:34,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 21:01:34,190 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 21:01:34,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop5-func-interl.c [2023-12-25 21:01:35,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 21:01:35,632 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 21:01:35,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop5-func-interl.c [2023-12-25 21:01:35,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48fc9cdbb/5621a2fafb83471ab30e9d57dd203982/FLAGb77c25c4c [2023-12-25 21:01:35,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48fc9cdbb/5621a2fafb83471ab30e9d57dd203982 [2023-12-25 21:01:35,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 21:01:35,684 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 21:01:35,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 21:01:35,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 21:01:35,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 21:01:35,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:01:35" (1/1) ... [2023-12-25 21:01:35,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d52768f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:35, skipping insertion in model container [2023-12-25 21:01:35,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:01:35" (1/1) ... [2023-12-25 21:01:35,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 21:01:36,046 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.pgm_protocol.8.prop5-func-interl.c[1179,1192] [2023-12-25 21:01:37,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 21:01:37,066 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 21:01:37,074 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.pgm_protocol.8.prop5-func-interl.c[1179,1192] [2023-12-25 21:01:37,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 21:01:37,827 INFO L206 MainTranslator]: Completed translation [2023-12-25 21:01:37,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37 WrapperNode [2023-12-25 21:01:37,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 21:01:37,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 21:01:37,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 21:01:37,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 21:01:37,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:38,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:41,402 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49778 [2023-12-25 21:01:41,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 21:01:41,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 21:01:41,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 21:01:41,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 21:01:41,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:41,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:42,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:43,011 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 21:01:43,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:43,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:44,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:44,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:44,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:44,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:45,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 21:01:45,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 21:01:45,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 21:01:45,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 21:01:45,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (1/1) ... [2023-12-25 21:01:45,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 21:01:45,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:01:45,389 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 21:01:45,423 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 21:01:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 21:01:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 21:01:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 21:01:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 21:01:47,344 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 21:01:47,346 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 21:02:04,169 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 21:02:04,641 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 21:02:04,642 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 21:02:04,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:02:04 BoogieIcfgContainer [2023-12-25 21:02:04,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 21:02:04,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 21:02:04,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 21:02:04,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 21:02:04,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:01:35" (1/3) ... [2023-12-25 21:02:04,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53dfcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:02:04, skipping insertion in model container [2023-12-25 21:02:04,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:01:37" (2/3) ... [2023-12-25 21:02:04,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53dfcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:02:04, skipping insertion in model container [2023-12-25 21:02:04,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:02:04" (3/3) ... [2023-12-25 21:02:04,647 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.8.prop5-func-interl.c [2023-12-25 21:02:04,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 21:02:04,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 21:02:04,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 21:02:04,758 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;@32d524a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 21:02:04,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 21:02:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 10909 states, 10907 states have (on average 1.6672778949298614) internal successors, (18185), 10908 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-25 21:02:04,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:04,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:04,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:04,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1392263095, now seen corresponding path program 1 times [2023-12-25 21:02:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585568834] [2023-12-25 21:02:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:06,915 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 21:02:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585568834] [2023-12-25 21:02:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585568834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:06,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:06,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:02:06,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595413254] [2023-12-25 21:02:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:06,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:02:06,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:02:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:02:06,966 INFO L87 Difference]: Start difference. First operand has 10909 states, 10907 states have (on average 1.6672778949298614) internal successors, (18185), 10908 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:07,440 INFO L93 Difference]: Finished difference Result 21283 states and 35481 transitions. [2023-12-25 21:02:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:02:07,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2023-12-25 21:02:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:07,492 INFO L225 Difference]: With dead ends: 21283 [2023-12-25 21:02:07,492 INFO L226 Difference]: Without dead ends: 10909 [2023-12-25 21:02:07,543 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 21:02:07,545 INFO L413 NwaCegarLoop]: 18178 mSDtfsCounter, 1 mSDsluCounter, 36351 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54529 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:07,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54529 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 21:02:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10909 states. [2023-12-25 21:02:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10909 to 10909. [2023-12-25 21:02:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 10908 states have (on average 1.6669416941694168) internal successors, (18183), 10908 states have internal predecessors, (18183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 18183 transitions. [2023-12-25 21:02:07,730 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 18183 transitions. Word has length 488 [2023-12-25 21:02:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:07,731 INFO L495 AbstractCegarLoop]: Abstraction has 10909 states and 18183 transitions. [2023-12-25 21:02:07,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 18183 transitions. [2023-12-25 21:02:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-25 21:02:07,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:07,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:07,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 21:02:07,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:07,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash 212270419, now seen corresponding path program 1 times [2023-12-25 21:02:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:07,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169854221] [2023-12-25 21:02:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:07,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:08,396 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 21:02:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169854221] [2023-12-25 21:02:08,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169854221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:08,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:02:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360819064] [2023-12-25 21:02:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:08,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:02:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:02:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:02:08,404 INFO L87 Difference]: Start difference. First operand 10909 states and 18183 transitions. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:08,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:08,690 INFO L93 Difference]: Finished difference Result 21286 states and 35479 transitions. [2023-12-25 21:02:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:02:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 489 [2023-12-25 21:02:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:08,718 INFO L225 Difference]: With dead ends: 21286 [2023-12-25 21:02:08,718 INFO L226 Difference]: Without dead ends: 10912 [2023-12-25 21:02:08,729 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 21:02:08,731 INFO L413 NwaCegarLoop]: 18178 mSDtfsCounter, 1 mSDsluCounter, 36349 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54527 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:08,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54527 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 21:02:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2023-12-25 21:02:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10911. [2023-12-25 21:02:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10911 states, 10910 states have (on average 1.666819431714024) internal successors, (18185), 10910 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 18185 transitions. [2023-12-25 21:02:08,969 INFO L78 Accepts]: Start accepts. Automaton has 10911 states and 18185 transitions. Word has length 489 [2023-12-25 21:02:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:08,970 INFO L495 AbstractCegarLoop]: Abstraction has 10911 states and 18185 transitions. [2023-12-25 21:02:08,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 10911 states and 18185 transitions. [2023-12-25 21:02:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-25 21:02:08,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:08,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:08,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 21:02:08,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:08,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2073198671, now seen corresponding path program 1 times [2023-12-25 21:02:08,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:08,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366042201] [2023-12-25 21:02:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:08,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:09,834 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 21:02:09,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:09,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366042201] [2023-12-25 21:02:09,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366042201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:09,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:09,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:02:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984472526] [2023-12-25 21:02:09,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:02:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:09,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:02:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:02:09,837 INFO L87 Difference]: Start difference. First operand 10911 states and 18185 transitions. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:19,461 INFO L93 Difference]: Finished difference Result 49955 states and 82511 transitions. [2023-12-25 21:02:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 21:02:19,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 490 [2023-12-25 21:02:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:19,502 INFO L225 Difference]: With dead ends: 49955 [2023-12-25 21:02:19,502 INFO L226 Difference]: Without dead ends: 21287 [2023-12-25 21:02:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-25 21:02:19,526 INFO L413 NwaCegarLoop]: 17140 mSDtfsCounter, 120882 mSDsluCounter, 47448 mSDsCounter, 0 mSdLazyCounter, 8393 mSolverCounterSat, 2264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120882 SdHoareTripleChecker+Valid, 64588 SdHoareTripleChecker+Invalid, 10657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2264 IncrementalHoareTripleChecker+Valid, 8393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:19,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120882 Valid, 64588 Invalid, 10657 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2264 Valid, 8393 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-25 21:02:19,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21287 states. [2023-12-25 21:02:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21287 to 11096. [2023-12-25 21:02:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11096 states, 11095 states have (on average 1.6666967102298333) internal successors, (18492), 11095 states have internal predecessors, (18492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11096 states to 11096 states and 18492 transitions. [2023-12-25 21:02:19,734 INFO L78 Accepts]: Start accepts. Automaton has 11096 states and 18492 transitions. Word has length 490 [2023-12-25 21:02:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:19,735 INFO L495 AbstractCegarLoop]: Abstraction has 11096 states and 18492 transitions. [2023-12-25 21:02:19,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 11096 states and 18492 transitions. [2023-12-25 21:02:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-25 21:02:19,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:19,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:19,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 21:02:19,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:19,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1442771577, now seen corresponding path program 1 times [2023-12-25 21:02:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:19,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905437722] [2023-12-25 21:02:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:20,802 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 21:02:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:20,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905437722] [2023-12-25 21:02:20,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905437722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:20,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:20,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:02:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597188357] [2023-12-25 21:02:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:02:20,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:02:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:02:20,805 INFO L87 Difference]: Start difference. First operand 11096 states and 18492 transitions. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:31,342 INFO L93 Difference]: Finished difference Result 31663 states and 52772 transitions. [2023-12-25 21:02:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:02:31,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 491 [2023-12-25 21:02:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:31,369 INFO L225 Difference]: With dead ends: 31663 [2023-12-25 21:02:31,369 INFO L226 Difference]: Without dead ends: 21287 [2023-12-25 21:02:31,378 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 21:02:31,384 INFO L413 NwaCegarLoop]: 13301 mSDtfsCounter, 52279 mSDsluCounter, 26596 mSDsCounter, 0 mSdLazyCounter, 14645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52279 SdHoareTripleChecker+Valid, 39897 SdHoareTripleChecker+Invalid, 14645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:31,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52279 Valid, 39897 Invalid, 14645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14645 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-25 21:02:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21287 states. [2023-12-25 21:02:31,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21287 to 11097. [2023-12-25 21:02:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11097 states, 11096 states have (on average 1.6666366258111032) internal successors, (18493), 11096 states have internal predecessors, (18493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11097 states to 11097 states and 18493 transitions. [2023-12-25 21:02:31,555 INFO L78 Accepts]: Start accepts. Automaton has 11097 states and 18493 transitions. Word has length 491 [2023-12-25 21:02:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:31,555 INFO L495 AbstractCegarLoop]: Abstraction has 11097 states and 18493 transitions. [2023-12-25 21:02:31,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11097 states and 18493 transitions. [2023-12-25 21:02:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-25 21:02:31,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:31,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:31,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 21:02:31,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:31,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1049744567, now seen corresponding path program 1 times [2023-12-25 21:02:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:31,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249290392] [2023-12-25 21:02:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:32,972 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 21:02:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249290392] [2023-12-25 21:02:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249290392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:32,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:32,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:02:32,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128007429] [2023-12-25 21:02:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:32,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:02:32,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:02:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:02:32,976 INFO L87 Difference]: Start difference. First operand 11097 states and 18493 transitions. Second operand has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:33,450 INFO L93 Difference]: Finished difference Result 31852 states and 53085 transitions. [2023-12-25 21:02:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 21:02:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 491 [2023-12-25 21:02:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:33,477 INFO L225 Difference]: With dead ends: 31852 [2023-12-25 21:02:33,478 INFO L226 Difference]: Without dead ends: 21476 [2023-12-25 21:02:33,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-25 21:02:33,492 INFO L413 NwaCegarLoop]: 18484 mSDtfsCounter, 69250 mSDsluCounter, 54832 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69250 SdHoareTripleChecker+Valid, 73316 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:33,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69250 Valid, 73316 Invalid, 29 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 21:02:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21476 states. [2023-12-25 21:02:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21476 to 11105. [2023-12-25 21:02:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11105 states, 11104 states have (on average 1.6663364553314122) internal successors, (18503), 11104 states have internal predecessors, (18503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11105 states to 11105 states and 18503 transitions. [2023-12-25 21:02:33,652 INFO L78 Accepts]: Start accepts. Automaton has 11105 states and 18503 transitions. Word has length 491 [2023-12-25 21:02:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 11105 states and 18503 transitions. [2023-12-25 21:02:33,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11105 states and 18503 transitions. [2023-12-25 21:02:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-25 21:02:33,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:33,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:33,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 21:02:33,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:33,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1401722777, now seen corresponding path program 1 times [2023-12-25 21:02:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:33,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544366479] [2023-12-25 21:02:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:34,301 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 21:02:34,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:34,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544366479] [2023-12-25 21:02:34,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544366479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:34,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:34,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:02:34,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552429714] [2023-12-25 21:02:34,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:34,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:02:34,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:34,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:02:34,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:02:34,304 INFO L87 Difference]: Start difference. First operand 11105 states and 18503 transitions. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:34,990 INFO L93 Difference]: Finished difference Result 21499 states and 35821 transitions. [2023-12-25 21:02:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:02:34,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2023-12-25 21:02:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:35,005 INFO L225 Difference]: With dead ends: 21499 [2023-12-25 21:02:35,005 INFO L226 Difference]: Without dead ends: 11115 [2023-12-25 21:02:35,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:02:35,014 INFO L413 NwaCegarLoop]: 17907 mSDtfsCounter, 17706 mSDsluCounter, 35809 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17706 SdHoareTripleChecker+Valid, 53716 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:35,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17706 Valid, 53716 Invalid, 814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 21:02:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11115 states. [2023-12-25 21:02:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11115 to 11111. [2023-12-25 21:02:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11111 states, 11110 states have (on average 1.6656165616561656) internal successors, (18505), 11110 states have internal predecessors, (18505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11111 states to 11111 states and 18505 transitions. [2023-12-25 21:02:35,141 INFO L78 Accepts]: Start accepts. Automaton has 11111 states and 18505 transitions. Word has length 492 [2023-12-25 21:02:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:35,143 INFO L495 AbstractCegarLoop]: Abstraction has 11111 states and 18505 transitions. [2023-12-25 21:02:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 11111 states and 18505 transitions. [2023-12-25 21:02:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-25 21:02:35,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:35,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:35,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 21:02:35,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:35,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1988528791, now seen corresponding path program 1 times [2023-12-25 21:02:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:35,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468422006] [2023-12-25 21:02:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:36,415 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 21:02:36,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468422006] [2023-12-25 21:02:36,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468422006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:36,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:36,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:02:36,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417719343] [2023-12-25 21:02:36,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:36,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 21:02:36,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 21:02:36,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:02:36,418 INFO L87 Difference]: Start difference. First operand 11111 states and 18505 transitions. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:37,890 INFO L93 Difference]: Finished difference Result 31875 states and 53092 transitions. [2023-12-25 21:02:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 21:02:37,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2023-12-25 21:02:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:37,918 INFO L225 Difference]: With dead ends: 31875 [2023-12-25 21:02:37,918 INFO L226 Difference]: Without dead ends: 21481 [2023-12-25 21:02:37,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 21:02:37,931 INFO L413 NwaCegarLoop]: 18197 mSDtfsCounter, 69848 mSDsluCounter, 72197 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69848 SdHoareTripleChecker+Valid, 90394 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:37,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69848 Valid, 90394 Invalid, 1369 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 21:02:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21481 states. [2023-12-25 21:02:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21481 to 11110. [2023-12-25 21:02:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11110 states, 11109 states have (on average 1.6654964443244216) internal successors, (18502), 11109 states have internal predecessors, (18502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11110 states to 11110 states and 18502 transitions. [2023-12-25 21:02:38,080 INFO L78 Accepts]: Start accepts. Automaton has 11110 states and 18502 transitions. Word has length 492 [2023-12-25 21:02:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:38,081 INFO L495 AbstractCegarLoop]: Abstraction has 11110 states and 18502 transitions. [2023-12-25 21:02:38,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 11110 states and 18502 transitions. [2023-12-25 21:02:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-25 21:02:38,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:38,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:02:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 21:02:38,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -349008931, now seen corresponding path program 1 times [2023-12-25 21:02:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624434879] [2023-12-25 21:02:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:02:38,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:38,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624434879] [2023-12-25 21:02:38,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624434879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:38,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 21:02:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759172534] [2023-12-25 21:02:38,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:38,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:02:38,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:02:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:02:38,674 INFO L87 Difference]: Start difference. First operand 11110 states and 18502 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:38,886 INFO L93 Difference]: Finished difference Result 21493 states and 35797 transitions. [2023-12-25 21:02:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:02:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 493 [2023-12-25 21:02:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:38,900 INFO L225 Difference]: With dead ends: 21493 [2023-12-25 21:02:38,900 INFO L226 Difference]: Without dead ends: 11099 [2023-12-25 21:02:38,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:02:38,911 INFO L413 NwaCegarLoop]: 18413 mSDtfsCounter, 34975 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34975 SdHoareTripleChecker+Valid, 19598 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:38,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34975 Valid, 19598 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 21:02:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2023-12-25 21:02:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 11099. [2023-12-25 21:02:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.6655253198774553) internal successors, (18484), 11098 states have internal predecessors, (18484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18484 transitions. [2023-12-25 21:02:39,045 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18484 transitions. Word has length 493 [2023-12-25 21:02:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:39,046 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18484 transitions. [2023-12-25 21:02:39,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:39,046 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18484 transitions. [2023-12-25 21:02:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7388 [2023-12-25 21:02:39,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:39,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 21:02:39,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:39,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 164131858, now seen corresponding path program 1 times [2023-12-25 21:02:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:39,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115012342] [2023-12-25 21:02:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:40,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:02:40,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665927954] [2023-12-25 21:02:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:02:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:02:40,356 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 21:02:40,360 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 21:02:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:02:50,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 37063 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:02:50,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:02:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:02:52,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:02:52,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:02:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115012342] [2023-12-25 21:02:52,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:02:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665927954] [2023-12-25 21:02:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665927954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:02:52,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:02:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:02:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979499676] [2023-12-25 21:02:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:02:52,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:02:52,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:02:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:02:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:02:52,077 INFO L87 Difference]: Start difference. First operand 11099 states and 18484 transitions. Second operand has 5 states, 5 states have (on average 1477.4) internal successors, (7387), 4 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:02:56,831 INFO L93 Difference]: Finished difference Result 22059 states and 36739 transitions. [2023-12-25 21:02:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:02:56,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1477.4) internal successors, (7387), 4 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7387 [2023-12-25 21:02:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:02:56,842 INFO L225 Difference]: With dead ends: 22059 [2023-12-25 21:02:56,842 INFO L226 Difference]: Without dead ends: 11679 [2023-12-25 21:02:56,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7387 GetRequests, 7383 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:02:56,850 INFO L413 NwaCegarLoop]: 14068 mSDtfsCounter, 34968 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 6060 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34968 SdHoareTripleChecker+Valid, 15532 SdHoareTripleChecker+Invalid, 6060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:02:56,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34968 Valid, 15532 Invalid, 6060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6060 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-25 21:02:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11679 states. [2023-12-25 21:02:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11679 to 11099. [2023-12-25 21:02:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.6654352135519914) internal successors, (18483), 11098 states have internal predecessors, (18483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18483 transitions. [2023-12-25 21:02:57,076 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18483 transitions. Word has length 7387 [2023-12-25 21:02:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:02:57,077 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18483 transitions. [2023-12-25 21:02:57,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1477.4) internal successors, (7387), 4 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:02:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18483 transitions. [2023-12-25 21:02:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7389 [2023-12-25 21:02:57,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:02:57,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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21:02:57,502 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 21:02:57,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:02:57,616 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:02:57,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:02:57,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1570621420, now seen corresponding path program 1 times [2023-12-25 21:02:57,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:02:57,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092853050] [2023-12-25 21:02:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:57,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:02:58,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:02:58,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526520013] [2023-12-25 21:02:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:02:58,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:02:58,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:02:58,310 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 21:02:58,311 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 21:03:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:03:07,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 37064 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:03:07,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:03:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:03:08,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:03:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:03:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092853050] [2023-12-25 21:03:08,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:03:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526520013] [2023-12-25 21:03:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526520013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:03:08,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:03:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:03:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857008188] [2023-12-25 21:03:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:03:08,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:03:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:03:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:03:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:03:08,872 INFO L87 Difference]: Start difference. First operand 11099 states and 18483 transitions. Second operand has 5 states, 5 states have (on average 1477.6) internal successors, (7388), 4 states have internal predecessors, (7388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:03:12,861 INFO L93 Difference]: Finished difference Result 22072 states and 36758 transitions. [2023-12-25 21:03:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:03:12,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1477.6) internal successors, (7388), 4 states have internal predecessors, (7388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7388 [2023-12-25 21:03:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:03:12,874 INFO L225 Difference]: With dead ends: 22072 [2023-12-25 21:03:12,874 INFO L226 Difference]: Without dead ends: 11692 [2023-12-25 21:03:12,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7388 GetRequests, 7384 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:03:12,882 INFO L413 NwaCegarLoop]: 14087 mSDtfsCounter, 52260 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 6062 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52260 SdHoareTripleChecker+Valid, 15571 SdHoareTripleChecker+Invalid, 6062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 21:03:12,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52260 Valid, 15571 Invalid, 6062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6062 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 21:03:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11692 states. [2023-12-25 21:03:12,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11692 to 11099. [2023-12-25 21:03:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.6653451072265273) internal successors, (18482), 11098 states have internal predecessors, (18482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18482 transitions. [2023-12-25 21:03:12,992 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18482 transitions. Word has length 7388 [2023-12-25 21:03:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:03:12,993 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18482 transitions. [2023-12-25 21:03:12,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1477.6) internal successors, (7388), 4 states have internal predecessors, (7388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18482 transitions. [2023-12-25 21:03:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7390 [2023-12-25 21:03:13,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:03:13,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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21:03:13,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-25 21:03:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-25 21:03:13,621 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:03:13,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:03:13,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1763564267, now seen corresponding path program 1 times [2023-12-25 21:03:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:03:13,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453089985] [2023-12-25 21:03:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:03:13,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:03:14,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:03:14,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389006215] [2023-12-25 21:03:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:03:14,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:03:14,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:03:14,327 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 21:03:14,329 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 21:03:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:03:23,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 37065 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:03:23,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:03:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:03:24,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:03:24,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:03:24,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453089985] [2023-12-25 21:03:24,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:03:24,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389006215] [2023-12-25 21:03:24,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389006215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:03:24,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:03:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:03:24,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524808605] [2023-12-25 21:03:24,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:03:24,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:03:24,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:03:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:03:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:03:24,886 INFO L87 Difference]: Start difference. First operand 11099 states and 18482 transitions. Second operand has 5 states, 5 states have (on average 1477.8) internal successors, (7389), 4 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:03:29,340 INFO L93 Difference]: Finished difference Result 22088 states and 36782 transitions. [2023-12-25 21:03:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:03:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1477.8) internal successors, (7389), 4 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7389 [2023-12-25 21:03:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:03:29,380 INFO L225 Difference]: With dead ends: 22088 [2023-12-25 21:03:29,380 INFO L226 Difference]: Without dead ends: 11708 [2023-12-25 21:03:29,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7389 GetRequests, 7385 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:03:29,404 INFO L413 NwaCegarLoop]: 14111 mSDtfsCounter, 34964 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 6064 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34964 SdHoareTripleChecker+Valid, 15620 SdHoareTripleChecker+Invalid, 6064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 21:03:29,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34964 Valid, 15620 Invalid, 6064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6064 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 21:03:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2023-12-25 21:03:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 11099. [2023-12-25 21:03:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.6652550009010632) internal successors, (18481), 11098 states have internal predecessors, (18481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18481 transitions. [2023-12-25 21:03:29,563 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18481 transitions. Word has length 7389 [2023-12-25 21:03:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:03:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18481 transitions. [2023-12-25 21:03:29,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1477.8) internal successors, (7389), 4 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18481 transitions. [2023-12-25 21:03:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7391 [2023-12-25 21:03:29,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:03:29,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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21:03:30,026 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 21:03:30,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:03:30,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:03:30,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:03:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash -40125231, now seen corresponding path program 1 times [2023-12-25 21:03:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:03:30,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407109507] [2023-12-25 21:03:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:03:30,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:03:30,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:03:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105924116] [2023-12-25 21:03:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:03:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:03:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:03:30,820 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 21:03:30,833 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 21:03:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:03:39,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 37066 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:03:39,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:03:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:03:40,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:03:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:03:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407109507] [2023-12-25 21:03:40,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:03:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105924116] [2023-12-25 21:03:40,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105924116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:03:40,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:03:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:03:40,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828014556] [2023-12-25 21:03:40,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:03:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:03:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:03:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:03:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:03:40,885 INFO L87 Difference]: Start difference. First operand 11099 states and 18481 transitions. Second operand has 5 states, 5 states have (on average 1478.0) internal successors, (7390), 4 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:03:44,528 INFO L93 Difference]: Finished difference Result 22095 states and 36791 transitions. [2023-12-25 21:03:44,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:03:44,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1478.0) internal successors, (7390), 4 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7390 [2023-12-25 21:03:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:03:44,541 INFO L225 Difference]: With dead ends: 22095 [2023-12-25 21:03:44,541 INFO L226 Difference]: Without dead ends: 11715 [2023-12-25 21:03:44,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7390 GetRequests, 7386 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:03:44,551 INFO L413 NwaCegarLoop]: 14120 mSDtfsCounter, 52238 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 6066 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52238 SdHoareTripleChecker+Valid, 15639 SdHoareTripleChecker+Invalid, 6066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:03:44,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52238 Valid, 15639 Invalid, 6066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6066 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 21:03:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11715 states. [2023-12-25 21:03:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11715 to 11099. [2023-12-25 21:03:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.6651648945755992) internal successors, (18480), 11098 states have internal predecessors, (18480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18480 transitions. [2023-12-25 21:03:44,663 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18480 transitions. Word has length 7390 [2023-12-25 21:03:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:03:44,664 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18480 transitions. [2023-12-25 21:03:44,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1478.0) internal successors, (7390), 4 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18480 transitions. [2023-12-25 21:03:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7392 [2023-12-25 21:03:44,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:03:44,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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21:03:45,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 21:03:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:03:45,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:03:45,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:03:45,195 INFO L85 PathProgramCache]: Analyzing trace with hash 584507620, now seen corresponding path program 1 times [2023-12-25 21:03:45,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:03:45,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756800534] [2023-12-25 21:03:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:03:45,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:03:45,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:03:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081303998] [2023-12-25 21:03:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:03:45,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:03:45,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:03:45,779 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 21:03:45,781 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 21:03:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:03:54,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 37067 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:03:54,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:03:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:03:55,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:03:55,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:03:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756800534] [2023-12-25 21:03:55,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:03:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081303998] [2023-12-25 21:03:55,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081303998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:03:55,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:03:55,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:03:55,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287671249] [2023-12-25 21:03:55,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:03:55,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:03:55,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:03:55,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:03:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:03:55,937 INFO L87 Difference]: Start difference. First operand 11099 states and 18480 transitions. Second operand has 5 states, 5 states have (on average 1478.2) internal successors, (7391), 4 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:03:59,682 INFO L93 Difference]: Finished difference Result 22099 states and 36795 transitions. [2023-12-25 21:03:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:03:59,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1478.2) internal successors, (7391), 4 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7391 [2023-12-25 21:03:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:03:59,704 INFO L225 Difference]: With dead ends: 22099 [2023-12-25 21:03:59,704 INFO L226 Difference]: Without dead ends: 11719 [2023-12-25 21:03:59,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7391 GetRequests, 7387 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:03:59,714 INFO L413 NwaCegarLoop]: 14124 mSDtfsCounter, 34960 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6068 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34960 SdHoareTripleChecker+Valid, 15648 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:03:59,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34960 Valid, 15648 Invalid, 6068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6068 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:03:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2023-12-25 21:03:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 11099. [2023-12-25 21:03:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.665074788250135) internal successors, (18479), 11098 states have internal predecessors, (18479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18479 transitions. [2023-12-25 21:03:59,886 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18479 transitions. Word has length 7391 [2023-12-25 21:03:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:03:59,887 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18479 transitions. [2023-12-25 21:03:59,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1478.2) internal successors, (7391), 4 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:03:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18479 transitions. [2023-12-25 21:04:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7393 [2023-12-25 21:04:00,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:04:00,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:00,318 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 21:04:00,429 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,SelfDestructingSolverStorable12 [2023-12-25 21:04:00,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:04:00,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:04:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash 670746662, now seen corresponding path program 1 times [2023-12-25 21:04:00,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:04:00,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851059273] [2023-12-25 21:04:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:04:01,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:04:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388434572] [2023-12-25 21:04:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:04:01,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:04:01,071 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 21:04:01,073 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 21:04:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:04:10,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 37068 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:04:10,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:04:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:04:11,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:04:11,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:04:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851059273] [2023-12-25 21:04:11,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:04:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388434572] [2023-12-25 21:04:11,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388434572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:04:11,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:04:11,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:04:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029870521] [2023-12-25 21:04:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:04:11,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:04:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:04:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:04:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:04:11,232 INFO L87 Difference]: Start difference. First operand 11099 states and 18479 transitions. Second operand has 5 states, 5 states have (on average 1478.4) internal successors, (7392), 4 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:04:15,661 INFO L93 Difference]: Finished difference Result 22124 states and 36834 transitions. [2023-12-25 21:04:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:04:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1478.4) internal successors, (7392), 4 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7392 [2023-12-25 21:04:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:04:15,671 INFO L225 Difference]: With dead ends: 22124 [2023-12-25 21:04:15,672 INFO L226 Difference]: Without dead ends: 11744 [2023-12-25 21:04:15,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7392 GetRequests, 7388 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:04:15,678 INFO L413 NwaCegarLoop]: 14163 mSDtfsCounter, 34958 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 6070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34958 SdHoareTripleChecker+Valid, 15727 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 21:04:15,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34958 Valid, 15727 Invalid, 6070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6070 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 21:04:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11744 states. [2023-12-25 21:04:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11744 to 11099. [2023-12-25 21:04:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.6649846819246712) internal successors, (18478), 11098 states have internal predecessors, (18478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18478 transitions. [2023-12-25 21:04:15,784 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18478 transitions. Word has length 7392 [2023-12-25 21:04:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:04:15,785 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18478 transitions. [2023-12-25 21:04:15,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1478.4) internal successors, (7392), 4 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18478 transitions. [2023-12-25 21:04:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7394 [2023-12-25 21:04:16,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:04:16,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:16,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 21:04:16,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:04:16,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:04:16,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:04:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash 831339855, now seen corresponding path program 1 times [2023-12-25 21:04:16,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:04:16,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031514053] [2023-12-25 21:04:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:16,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:04:16,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:04:16,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990856263] [2023-12-25 21:04:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:16,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:04:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:04:16,965 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 21:04:16,984 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 21:04:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:04:26,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 37069 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:04:26,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:04:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:04:27,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:04:27,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:04:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031514053] [2023-12-25 21:04:27,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:04:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990856263] [2023-12-25 21:04:27,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990856263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:04:27,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:04:27,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:04:27,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123334965] [2023-12-25 21:04:27,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:04:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:04:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:04:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:04:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:04:27,796 INFO L87 Difference]: Start difference. First operand 11099 states and 18478 transitions. Second operand has 5 states, 5 states have (on average 1478.6) internal successors, (7393), 4 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:04:32,937 INFO L93 Difference]: Finished difference Result 22143 states and 36863 transitions. [2023-12-25 21:04:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:04:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1478.6) internal successors, (7393), 4 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7393 [2023-12-25 21:04:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:04:32,949 INFO L225 Difference]: With dead ends: 22143 [2023-12-25 21:04:32,950 INFO L226 Difference]: Without dead ends: 11763 [2023-12-25 21:04:32,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7393 GetRequests, 7389 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:04:32,958 INFO L413 NwaCegarLoop]: 14192 mSDtfsCounter, 34956 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 6072 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34956 SdHoareTripleChecker+Valid, 15786 SdHoareTripleChecker+Invalid, 6072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-25 21:04:32,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34956 Valid, 15786 Invalid, 6072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6072 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-25 21:04:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2023-12-25 21:04:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11099. [2023-12-25 21:04:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.664894575599207) internal successors, (18477), 11098 states have internal predecessors, (18477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18477 transitions. [2023-12-25 21:04:33,058 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18477 transitions. Word has length 7393 [2023-12-25 21:04:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:04:33,059 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18477 transitions. [2023-12-25 21:04:33,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1478.6) internal successors, (7393), 4 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18477 transitions. [2023-12-25 21:04:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7395 [2023-12-25 21:04:33,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:04:33,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:33,543 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 21:04:33,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:04:33,652 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:04:33,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:04:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2062654781, now seen corresponding path program 1 times [2023-12-25 21:04:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:04:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228333185] [2023-12-25 21:04:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:04:34,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:04:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836452173] [2023-12-25 21:04:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:34,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:04:34,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:04:34,213 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 21:04:34,214 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 21:04:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:04:42,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 37070 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 21:04:42,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:04:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:04:44,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:04:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:04:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228333185] [2023-12-25 21:04:44,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:04:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836452173] [2023-12-25 21:04:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836452173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:04:44,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:04:44,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:04:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489626182] [2023-12-25 21:04:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:04:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:04:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:04:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:04:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:04:44,487 INFO L87 Difference]: Start difference. First operand 11099 states and 18477 transitions. Second operand has 5 states, 5 states have (on average 1478.8) internal successors, (7394), 4 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:04:49,579 INFO L93 Difference]: Finished difference Result 22156 states and 36882 transitions. [2023-12-25 21:04:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:04:49,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1478.8) internal successors, (7394), 4 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7394 [2023-12-25 21:04:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:04:49,590 INFO L225 Difference]: With dead ends: 22156 [2023-12-25 21:04:49,591 INFO L226 Difference]: Without dead ends: 11776 [2023-12-25 21:04:49,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7394 GetRequests, 7390 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:04:49,598 INFO L413 NwaCegarLoop]: 14211 mSDtfsCounter, 52184 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 6074 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52184 SdHoareTripleChecker+Valid, 15825 SdHoareTripleChecker+Invalid, 6074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-25 21:04:49,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52184 Valid, 15825 Invalid, 6074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6074 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-25 21:04:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11776 states. [2023-12-25 21:04:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11776 to 11099. [2023-12-25 21:04:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11099 states, 11098 states have (on average 1.664804469273743) internal successors, (18476), 11098 states have internal predecessors, (18476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 18476 transitions. [2023-12-25 21:04:49,697 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 18476 transitions. Word has length 7394 [2023-12-25 21:04:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:04:49,698 INFO L495 AbstractCegarLoop]: Abstraction has 11099 states and 18476 transitions. [2023-12-25 21:04:49,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1478.8) internal successors, (7394), 4 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:04:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 18476 transitions. [2023-12-25 21:04:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7396 [2023-12-25 21:04:50,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:04:50,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:50,130 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 21:04:50,239 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,SelfDestructingSolverStorable15 [2023-12-25 21:04:50,240 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:04:50,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:04:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1471940782, now seen corresponding path program 1 times [2023-12-25 21:04:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:04:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531911834] [2023-12-25 21:04:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:04:50,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:04:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528529159] [2023-12-25 21:04:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:04:50,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:04:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:04:50,818 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 21:04:50,820 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 21:04:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:04:59,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 37071 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 21:04:59,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:05:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:05:20,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:05:20,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:05:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531911834] [2023-12-25 21:05:20,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:05:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528529159] [2023-12-25 21:05:20,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528529159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:05:20,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:05:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:05:20,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622755844] [2023-12-25 21:05:20,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:05:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:05:20,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:05:20,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:05:20,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:05:20,049 INFO L87 Difference]: Start difference. First operand 11099 states and 18476 transitions. Second operand has 5 states, 5 states have (on average 1479.0) internal successors, (7395), 5 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:05:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:05:31,574 INFO L93 Difference]: Finished difference Result 31671 states and 52731 transitions. [2023-12-25 21:05:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:05:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1479.0) internal successors, (7395), 5 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7395 [2023-12-25 21:05:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:05:31,598 INFO L225 Difference]: With dead ends: 31671 [2023-12-25 21:05:31,598 INFO L226 Difference]: Without dead ends: 21291 [2023-12-25 21:05:31,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7396 GetRequests, 7391 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:05:31,607 INFO L413 NwaCegarLoop]: 13754 mSDtfsCounter, 10200 mSDsluCounter, 40310 mSDsCounter, 0 mSdLazyCounter, 18604 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10200 SdHoareTripleChecker+Valid, 54064 SdHoareTripleChecker+Invalid, 18604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:05:31,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10200 Valid, 54064 Invalid, 18604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 18604 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-25 21:05:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21291 states. [2023-12-25 21:05:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21291 to 21281. [2023-12-25 21:05:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21281 states, 21280 states have (on average 1.6650845864661654) internal successors, (35433), 21280 states have internal predecessors, (35433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:05:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21281 states to 21281 states and 35433 transitions. [2023-12-25 21:05:31,857 INFO L78 Accepts]: Start accepts. Automaton has 21281 states and 35433 transitions. Word has length 7395 [2023-12-25 21:05:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:05:31,861 INFO L495 AbstractCegarLoop]: Abstraction has 21281 states and 35433 transitions. [2023-12-25 21:05:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1479.0) internal successors, (7395), 5 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:05:31,863 INFO L276 IsEmpty]: Start isEmpty. Operand 21281 states and 35433 transitions. [2023-12-25 21:05:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7397 [2023-12-25 21:05:32,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:05:32,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:32,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 21:05:32,432 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,SelfDestructingSolverStorable16 [2023-12-25 21:05:32,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:05:32,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:05:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -813385566, now seen corresponding path program 1 times [2023-12-25 21:05:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:05:32,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339829045] [2023-12-25 21:05:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:05:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:05:33,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:05:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105621386] [2023-12-25 21:05:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:05:33,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:05:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:05:33,195 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 21:05:33,197 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 21:05:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:05:42,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 37074 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 21:05:42,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:05:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-25 21:05:43,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:05:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-25 21:05:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:05:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339829045] [2023-12-25 21:05:43,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:05:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105621386] [2023-12-25 21:05:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105621386] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:05:43,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 21:05:43,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-25 21:05:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793241022] [2023-12-25 21:05:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:05:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:05:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:05:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:05:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 21:05:43,312 INFO L87 Difference]: Start difference. First operand 21281 states and 35433 transitions. Second operand has 4 states, 4 states have (on average 1818.5) internal successors, (7274), 4 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:05:43,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:05:43,674 INFO L93 Difference]: Finished difference Result 42029 states and 69979 transitions. [2023-12-25 21:05:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:05:43,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1818.5) internal successors, (7274), 4 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7396 [2023-12-25 21:05:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:05:43,704 INFO L225 Difference]: With dead ends: 42029 [2023-12-25 21:05:43,705 INFO L226 Difference]: Without dead ends: 21467 [2023-12-25 21:05:43,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14790 GetRequests, 14782 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 21:05:43,721 INFO L413 NwaCegarLoop]: 35419 mSDtfsCounter, 17258 mSDsluCounter, 53566 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17258 SdHoareTripleChecker+Valid, 88985 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:05:43,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17258 Valid, 88985 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 21:05:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21467 states. [2023-12-25 21:05:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21467 to 21273. [2023-12-25 21:05:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21273 states, 21272 states have (on average 1.6650996615268898) internal successors, (35420), 21272 states have internal predecessors, (35420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:05:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21273 states to 21273 states and 35420 transitions. [2023-12-25 21:05:43,986 INFO L78 Accepts]: Start accepts. Automaton has 21273 states and 35420 transitions. Word has length 7396 [2023-12-25 21:05:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:05:43,990 INFO L495 AbstractCegarLoop]: Abstraction has 21273 states and 35420 transitions. [2023-12-25 21:05:43,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1818.5) internal successors, (7274), 4 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:05:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21273 states and 35420 transitions. [2023-12-25 21:05:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7398 [2023-12-25 21:05:44,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:05:44,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:44,446 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 21:05:44,544 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,SelfDestructingSolverStorable17 [2023-12-25 21:05:44,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:05:44,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:05:44,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2141993850, now seen corresponding path program 1 times [2023-12-25 21:05:44,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:05:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379531167] [2023-12-25 21:05:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:05:44,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:05:45,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:05:45,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799798731] [2023-12-25 21:05:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:05:45,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:05:45,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:05:45,126 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 21:05:45,128 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 21:05:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:05:54,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 37077 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 21:05:55,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:06:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:06:19,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:06:19,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:06:19,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379531167] [2023-12-25 21:06:19,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:06:19,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799798731] [2023-12-25 21:06:19,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799798731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:06:19,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:06:19,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:06:19,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415120237] [2023-12-25 21:06:19,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:06:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 21:06:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:06:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 21:06:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:06:19,527 INFO L87 Difference]: Start difference. First operand 21273 states and 35420 transitions. Second operand has 7 states, 7 states have (on average 1056.7142857142858) internal successors, (7397), 6 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:06:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:06:28,087 INFO L93 Difference]: Finished difference Result 52131 states and 86784 transitions. [2023-12-25 21:06:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:06:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1056.7142857142858) internal successors, (7397), 6 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7397 [2023-12-25 21:06:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:06:28,122 INFO L225 Difference]: With dead ends: 52131 [2023-12-25 21:06:28,122 INFO L226 Difference]: Without dead ends: 31577 [2023-12-25 21:06:28,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7399 GetRequests, 7391 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-25 21:06:28,141 INFO L413 NwaCegarLoop]: 13681 mSDtfsCounter, 75720 mSDsluCounter, 44740 mSDsCounter, 0 mSdLazyCounter, 14590 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75720 SdHoareTripleChecker+Valid, 58421 SdHoareTripleChecker+Invalid, 14708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 14590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:06:28,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75720 Valid, 58421 Invalid, 14708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 14590 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-25 21:06:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31577 states. [2023-12-25 21:06:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31577 to 27127. [2023-12-25 21:06:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27127 states, 27126 states have (on average 1.6649708766497087) internal successors, (45164), 27126 states have internal predecessors, (45164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:06:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27127 states to 27127 states and 45164 transitions. [2023-12-25 21:06:28,450 INFO L78 Accepts]: Start accepts. Automaton has 27127 states and 45164 transitions. Word has length 7397 [2023-12-25 21:06:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:06:28,455 INFO L495 AbstractCegarLoop]: Abstraction has 27127 states and 45164 transitions. [2023-12-25 21:06:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1056.7142857142858) internal successors, (7397), 6 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:06:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 27127 states and 45164 transitions. [2023-12-25 21:06:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7399 [2023-12-25 21:06:28,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:06:28,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 21:06:29,031 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 21:06:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:06:29,116 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:06:29,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:06:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash -742908010, now seen corresponding path program 1 times [2023-12-25 21:06:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:06:29,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12224100] [2023-12-25 21:06:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:06:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:06:29,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:06:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373456111] [2023-12-25 21:06:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:06:29,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:06:29,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:06:29,725 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 21:06:29,740 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 21:06:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:06:38,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 37080 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 21:06:38,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:06:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:06:43,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:06:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:06:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12224100] [2023-12-25 21:06:43,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:06:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373456111] [2023-12-25 21:06:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373456111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:06:43,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:06:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:06:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250043154] [2023-12-25 21:06:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:06:43,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:06:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:06:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:06:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:06:43,085 INFO L87 Difference]: Start difference. First operand 27127 states and 45164 transitions. Second operand has 6 states, 6 states have (on average 1233.0) internal successors, (7398), 6 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:06:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:06:53,570 INFO L93 Difference]: Finished difference Result 60014 states and 99942 transitions. [2023-12-25 21:06:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 21:06:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1233.0) internal successors, (7398), 6 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7398 [2023-12-25 21:06:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:06:53,610 INFO L225 Difference]: With dead ends: 60014 [2023-12-25 21:06:53,610 INFO L226 Difference]: Without dead ends: 38231 [2023-12-25 21:06:53,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7400 GetRequests, 7393 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:06:53,634 INFO L413 NwaCegarLoop]: 19282 mSDtfsCounter, 25575 mSDsluCounter, 51813 mSDsCounter, 0 mSdLazyCounter, 23182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25575 SdHoareTripleChecker+Valid, 71095 SdHoareTripleChecker+Invalid, 23183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:06:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25575 Valid, 71095 Invalid, 23183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23182 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-25 21:06:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2023-12-25 21:06:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 29585. [2023-12-25 21:06:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29585 states, 29584 states have (on average 1.6649878312601407) internal successors, (49257), 29584 states have internal predecessors, (49257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:06:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29585 states to 29585 states and 49257 transitions. [2023-12-25 21:06:53,966 INFO L78 Accepts]: Start accepts. Automaton has 29585 states and 49257 transitions. Word has length 7398 [2023-12-25 21:06:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:06:53,968 INFO L495 AbstractCegarLoop]: Abstraction has 29585 states and 49257 transitions. [2023-12-25 21:06:53,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1233.0) internal successors, (7398), 6 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:06:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 29585 states and 49257 transitions. [2023-12-25 21:06:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7400 [2023-12-25 21:06:54,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:06:54,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:54,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-25 21:06:54,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:06:54,588 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:06:54,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:06:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash -906307028, now seen corresponding path program 1 times [2023-12-25 21:06:54,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:06:54,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522040305] [2023-12-25 21:06:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:06:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:06:55,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:06:55,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697748096] [2023-12-25 21:06:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:06:55,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:06:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:06:55,121 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 21:06:55,123 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 21:07:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:07:03,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 37084 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 21:07:03,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:07:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:07:09,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:07:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:07:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522040305] [2023-12-25 21:07:09,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:07:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697748096] [2023-12-25 21:07:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697748096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:07:09,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:07:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:07:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010122607] [2023-12-25 21:07:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:07:09,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:07:09,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:07:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:07:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:07:09,643 INFO L87 Difference]: Start difference. First operand 29585 states and 49257 transitions. Second operand has 6 states, 6 states have (on average 1233.1666666666667) internal successors, (7399), 6 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:07:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:07:18,271 INFO L93 Difference]: Finished difference Result 61243 states and 101986 transitions. [2023-12-25 21:07:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 21:07:18,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1233.1666666666667) internal successors, (7399), 6 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7399 [2023-12-25 21:07:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:07:18,304 INFO L225 Difference]: With dead ends: 61243 [2023-12-25 21:07:18,304 INFO L226 Difference]: Without dead ends: 38231 [2023-12-25 21:07:18,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7400 GetRequests, 7394 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 21:07:18,313 INFO L413 NwaCegarLoop]: 13280 mSDtfsCounter, 27689 mSDsluCounter, 39820 mSDsCounter, 0 mSdLazyCounter, 19547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27689 SdHoareTripleChecker+Valid, 53100 SdHoareTripleChecker+Invalid, 19548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-25 21:07:18,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27689 Valid, 53100 Invalid, 19548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19547 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-25 21:07:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2023-12-25 21:07:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 31089. [2023-12-25 21:07:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31089 states, 31088 states have (on average 1.6649832732887289) internal successors, (51761), 31088 states have internal predecessors, (51761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:07:18,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31089 states to 31089 states and 51761 transitions. [2023-12-25 21:07:18,619 INFO L78 Accepts]: Start accepts. Automaton has 31089 states and 51761 transitions. Word has length 7399 [2023-12-25 21:07:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:07:18,621 INFO L495 AbstractCegarLoop]: Abstraction has 31089 states and 51761 transitions. [2023-12-25 21:07:18,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1233.1666666666667) internal successors, (7399), 6 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:07:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 31089 states and 51761 transitions. [2023-12-25 21:07:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7401 [2023-12-25 21:07:18,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:07:18,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:19,019 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 21:07:19,136 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,SelfDestructingSolverStorable20 [2023-12-25 21:07:19,137 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:07:19,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:07:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1101832338, now seen corresponding path program 1 times [2023-12-25 21:07:19,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:07:19,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852420610] [2023-12-25 21:07:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:07:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:07:19,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:07:19,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211325009] [2023-12-25 21:07:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:07:19,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:07:19,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:07:19,825 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 21:07:19,826 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 21:07:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:07:28,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 37087 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 21:07:28,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:07:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:07:36,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:07:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:07:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852420610] [2023-12-25 21:07:36,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:07:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211325009] [2023-12-25 21:07:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211325009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:07:36,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:07:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:07:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573334832] [2023-12-25 21:07:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:07:36,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:07:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:07:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:07:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:07:36,736 INFO L87 Difference]: Start difference. First operand 31089 states and 51761 transitions. Second operand has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:07:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:07:46,557 INFO L93 Difference]: Finished difference Result 62747 states and 104488 transitions. [2023-12-25 21:07:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 21:07:46,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7400 [2023-12-25 21:07:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:07:46,596 INFO L225 Difference]: With dead ends: 62747 [2023-12-25 21:07:46,596 INFO L226 Difference]: Without dead ends: 38231 [2023-12-25 21:07:46,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7401 GetRequests, 7395 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 21:07:46,618 INFO L413 NwaCegarLoop]: 13280 mSDtfsCounter, 25929 mSDsluCounter, 39820 mSDsCounter, 0 mSdLazyCounter, 19547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25929 SdHoareTripleChecker+Valid, 53100 SdHoareTripleChecker+Invalid, 19548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:07:46,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25929 Valid, 53100 Invalid, 19548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19547 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-25 21:07:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2023-12-25 21:07:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 33723. [2023-12-25 21:07:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33723 states, 33722 states have (on average 1.665055453413202) internal successors, (56149), 33722 states have internal predecessors, (56149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:07:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33723 states to 33723 states and 56149 transitions. [2023-12-25 21:07:46,983 INFO L78 Accepts]: Start accepts. Automaton has 33723 states and 56149 transitions. Word has length 7400 [2023-12-25 21:07:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:07:46,986 INFO L495 AbstractCegarLoop]: Abstraction has 33723 states and 56149 transitions. [2023-12-25 21:07:46,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:07:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 33723 states and 56149 transitions. [2023-12-25 21:07:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7402 [2023-12-25 21:07:47,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:07:47,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:47,535 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 21:07:47,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:07:47,643 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:07:47,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:07:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2133722368, now seen corresponding path program 1 times [2023-12-25 21:07:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:07:47,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34443116] [2023-12-25 21:07:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:07:47,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:07:48,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:07:48,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174452302] [2023-12-25 21:07:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:07:48,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:07:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:07:48,372 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 21:07:48,374 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 21:07:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:07:57,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 37091 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 21:07:57,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:08:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:08:05,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:08:05,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:08:05,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34443116] [2023-12-25 21:08:05,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:08:05,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174452302] [2023-12-25 21:08:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174452302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:08:05,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:08:05,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:08:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482933873] [2023-12-25 21:08:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:08:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:08:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:08:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:08:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:08:05,045 INFO L87 Difference]: Start difference. First operand 33723 states and 56149 transitions. Second operand has 6 states, 6 states have (on average 1233.5) internal successors, (7401), 6 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:08:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:08:14,529 INFO L93 Difference]: Finished difference Result 65381 states and 108874 transitions. [2023-12-25 21:08:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 21:08:14,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1233.5) internal successors, (7401), 6 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7401 [2023-12-25 21:08:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:08:14,564 INFO L225 Difference]: With dead ends: 65381 [2023-12-25 21:08:14,564 INFO L226 Difference]: Without dead ends: 38231 [2023-12-25 21:08:14,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7402 GetRequests, 7396 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 21:08:14,581 INFO L413 NwaCegarLoop]: 13280 mSDtfsCounter, 20057 mSDsluCounter, 39820 mSDsCounter, 0 mSdLazyCounter, 19547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20057 SdHoareTripleChecker+Valid, 53100 SdHoareTripleChecker+Invalid, 19548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:08:14,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20057 Valid, 53100 Invalid, 19548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19547 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-25 21:08:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2023-12-25 21:08:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 33849. [2023-12-25 21:08:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33849 states, 33848 states have (on average 1.6650023635074451) internal successors, (56357), 33848 states have internal predecessors, (56357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:08:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33849 states to 33849 states and 56357 transitions. [2023-12-25 21:08:14,937 INFO L78 Accepts]: Start accepts. Automaton has 33849 states and 56357 transitions. Word has length 7401 [2023-12-25 21:08:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:08:14,939 INFO L495 AbstractCegarLoop]: Abstraction has 33849 states and 56357 transitions. [2023-12-25 21:08:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1233.5) internal successors, (7401), 6 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:08:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 33849 states and 56357 transitions. [2023-12-25 21:08:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7403 [2023-12-25 21:08:15,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:08:15,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-25 21:08:15,438 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 21:08:15,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:08:15,544 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:08:15,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:08:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1334600238, now seen corresponding path program 1 times [2023-12-25 21:08:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:08:15,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631672992] [2023-12-25 21:08:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:08:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:08:16,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:08:16,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400680861] [2023-12-25 21:08:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:08:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:08:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:08:16,118 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 21:08:16,119 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 21:08:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:08:25,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 37094 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 21:08:25,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:08:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:08:33,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 21:08:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:08:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631672992] [2023-12-25 21:08:33,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 21:08:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400680861] [2023-12-25 21:08:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400680861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:08:33,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:08:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 21:08:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564459840] [2023-12-25 21:08:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:08:33,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:08:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:08:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:08:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:08:33,967 INFO L87 Difference]: Start difference. First operand 33849 states and 56357 transitions. Second operand has 6 states, 6 states have (on average 1233.6666666666667) internal successors, (7402), 6 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:08:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:08:42,933 INFO L93 Difference]: Finished difference Result 65507 states and 109080 transitions. [2023-12-25 21:08:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 21:08:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1233.6666666666667) internal successors, (7402), 6 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7402 [2023-12-25 21:08:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:08:42,976 INFO L225 Difference]: With dead ends: 65507 [2023-12-25 21:08:42,976 INFO L226 Difference]: Without dead ends: 38231 [2023-12-25 21:08:43,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7403 GetRequests, 7397 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 21:08:43,074 INFO L413 NwaCegarLoop]: 13280 mSDtfsCounter, 20029 mSDsluCounter, 39820 mSDsCounter, 0 mSdLazyCounter, 19547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20029 SdHoareTripleChecker+Valid, 53100 SdHoareTripleChecker+Invalid, 19548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:08:43,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20029 Valid, 53100 Invalid, 19548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19547 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-25 21:08:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2023-12-25 21:08:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 33927. [2023-12-25 21:08:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33927 states, 33926 states have (on average 1.664947238106467) internal successors, (56485), 33926 states have internal predecessors, (56485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:08:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33927 states to 33927 states and 56485 transitions. [2023-12-25 21:08:43,419 INFO L78 Accepts]: Start accepts. Automaton has 33927 states and 56485 transitions. Word has length 7402 [2023-12-25 21:08:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:08:43,422 INFO L495 AbstractCegarLoop]: Abstraction has 33927 states and 56485 transitions. [2023-12-25 21:08:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1233.6666666666667) internal successors, (7402), 6 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:08:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 33927 states and 56485 transitions. [2023-12-25 21:08:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7404 [2023-12-25 21:08:43,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:08:43,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:43,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 21:08:43,917 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,SelfDestructingSolverStorable23 [2023-12-25 21:08:43,917 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:08:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:08:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -873216686, now seen corresponding path program 1 times [2023-12-25 21:08:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:08:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925614010] [2023-12-25 21:08:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:08:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:08:44,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 21:08:44,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898851279] [2023-12-25 21:08:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:08:44,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:08:44,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:08:44,581 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 21:08:44,583 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 21:08:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:08:53,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 37097 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 21:08:54,086 INFO L285 TraceCheckSpWp]: Computing forward predicates...