/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.needham.2.prop3-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 20:01:03,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 20:01:03,258 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 20:01:03,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 20:01:03,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 20:01:03,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 20:01:03,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 20:01:03,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 20:01:03,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 20:01:03,291 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 20:01:03,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 20:01:03,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 20:01:03,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 20:01:03,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 20:01:03,292 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 20:01:03,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 20:01:03,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 20:01:03,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 20:01:03,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 20:01:03,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 20:01:03,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 20:01:03,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 20:01:03,296 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 20:01:03,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 20:01:03,296 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 20:01:03,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 20:01:03,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 20:01:03,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 20:01:03,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 20:01:03,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 20:01:03,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 20:01:03,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 20:01:03,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 20:01:03,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 20:01:03,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 20:01:03,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 20:01:03,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 20:01:03,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 20:01:03,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 20:01:03,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 20:01:03,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 20:01:03,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 20:01:03,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 20:01:03,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 20:01:03,512 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 20:01:03,513 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 20:01:03,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.2.prop3-func-interl.c [2023-12-25 20:01:04,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 20:01:04,871 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 20:01:04,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.2.prop3-func-interl.c [2023-12-25 20:01:04,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102706590/d92bfd7377c94b79a2eca56f3a6e425a/FLAG053900171 [2023-12-25 20:01:04,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102706590/d92bfd7377c94b79a2eca56f3a6e425a [2023-12-25 20:01:04,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 20:01:04,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 20:01:04,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 20:01:04,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 20:01:04,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 20:01:04,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:01:04" (1/1) ... [2023-12-25 20:01:04,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7920e599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:04, skipping insertion in model container [2023-12-25 20:01:04,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:01:04" (1/1) ... [2023-12-25 20:01:04,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 20:01:05,137 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.needham.2.prop3-func-interl.c[1174,1187] [2023-12-25 20:01:05,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 20:01:05,666 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 20:01:05,674 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.needham.2.prop3-func-interl.c[1174,1187] [2023-12-25 20:01:06,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 20:01:06,032 INFO L206 MainTranslator]: Completed translation [2023-12-25 20:01:06,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06 WrapperNode [2023-12-25 20:01:06,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 20:01:06,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 20:01:06,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 20:01:06,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 20:01:06,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:06,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:07,754 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20910 [2023-12-25 20:01:07,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 20:01:07,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 20:01:07,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 20:01:07,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 20:01:07,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:07,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:08,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:08,456 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 20:01:08,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:08,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:09,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:09,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:09,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:09,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:09,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 20:01:09,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 20:01:09,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 20:01:09,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 20:01:09,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (1/1) ... [2023-12-25 20:01:09,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 20:01:09,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:09,550 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 20:01:09,556 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 20:01:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 20:01:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 20:01:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 20:01:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 20:01:10,234 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 20:01:10,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 20:01:18,934 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 20:01:19,099 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 20:01:19,100 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 20:01:19,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:01:19 BoogieIcfgContainer [2023-12-25 20:01:19,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 20:01:19,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 20:01:19,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 20:01:19,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 20:01:19,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:01:04" (1/3) ... [2023-12-25 20:01:19,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502e1ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:01:19, skipping insertion in model container [2023-12-25 20:01:19,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:06" (2/3) ... [2023-12-25 20:01:19,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502e1ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:01:19, skipping insertion in model container [2023-12-25 20:01:19,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:01:19" (3/3) ... [2023-12-25 20:01:19,107 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.2.prop3-func-interl.c [2023-12-25 20:01:19,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 20:01:19,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 20:01:19,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 20:01:19,201 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;@24c9f3ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 20:01:19,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 20:01:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 4981 states, 4979 states have (on average 1.670817433219522) internal successors, (8319), 4980 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-25 20:01:19,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:19,248 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] [2023-12-25 20:01:19,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:19,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash 48586968, now seen corresponding path program 1 times [2023-12-25 20:01:19,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:19,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438762814] [2023-12-25 20:01:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:19,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:20,172 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 20:01:20,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:20,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438762814] [2023-12-25 20:01:20,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438762814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:20,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:20,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831582297] [2023-12-25 20:01:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:20,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:20,222 INFO L87 Difference]: Start difference. First operand has 4981 states, 4979 states have (on average 1.670817433219522) internal successors, (8319), 4980 states have internal predecessors, (8319), 0 states have call successors, (0), 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 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:20,565 INFO L93 Difference]: Finished difference Result 9808 states and 16384 transitions. [2023-12-25 20:01:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:20,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2023-12-25 20:01:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:20,587 INFO L225 Difference]: With dead ends: 9808 [2023-12-25 20:01:20,587 INFO L226 Difference]: Without dead ends: 4981 [2023-12-25 20:01:20,595 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 20:01:20,597 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 1 mSDsluCounter, 16619 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24931 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:20,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24931 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2023-12-25 20:01:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4981. [2023-12-25 20:01:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 4980 states have (on average 1.6700803212851405) internal successors, (8317), 4980 states have internal predecessors, (8317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 8317 transitions. [2023-12-25 20:01:20,696 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 8317 transitions. Word has length 272 [2023-12-25 20:01:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:20,697 INFO L495 AbstractCegarLoop]: Abstraction has 4981 states and 8317 transitions. [2023-12-25 20:01:20,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 8317 transitions. [2023-12-25 20:01:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-25 20:01:20,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:20,699 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] [2023-12-25 20:01:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 20:01:20,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1507982146, now seen corresponding path program 1 times [2023-12-25 20:01:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577279764] [2023-12-25 20:01:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:21,022 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 20:01:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577279764] [2023-12-25 20:01:21,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577279764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:21,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:21,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667456451] [2023-12-25 20:01:21,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:21,025 INFO L87 Difference]: Start difference. First operand 4981 states and 8317 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:21,143 INFO L93 Difference]: Finished difference Result 9811 states and 16382 transitions. [2023-12-25 20:01:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:21,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2023-12-25 20:01:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:21,156 INFO L225 Difference]: With dead ends: 9811 [2023-12-25 20:01:21,156 INFO L226 Difference]: Without dead ends: 4984 [2023-12-25 20:01:21,161 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 20:01:21,162 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 1 mSDsluCounter, 16617 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24929 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24929 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2023-12-25 20:01:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 4983. [2023-12-25 20:01:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 1.669811320754717) internal successors, (8319), 4982 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 8319 transitions. [2023-12-25 20:01:21,224 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 8319 transitions. Word has length 273 [2023-12-25 20:01:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:21,224 INFO L495 AbstractCegarLoop]: Abstraction has 4983 states and 8319 transitions. [2023-12-25 20:01:21,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 8319 transitions. [2023-12-25 20:01:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-25 20:01:21,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:21,227 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] [2023-12-25 20:01:21,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 20:01:21,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:21,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:21,227 INFO L85 PathProgramCache]: Analyzing trace with hash -709412048, now seen corresponding path program 1 times [2023-12-25 20:01:21,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:21,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946427787] [2023-12-25 20:01:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:21,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:21,655 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 20:01:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946427787] [2023-12-25 20:01:21,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946427787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:21,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695840266] [2023-12-25 20:01:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:21,657 INFO L87 Difference]: Start difference. First operand 4983 states and 8319 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:21,874 INFO L93 Difference]: Finished difference Result 14631 states and 24430 transitions. [2023-12-25 20:01:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 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 274 [2023-12-25 20:01:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:21,904 INFO L225 Difference]: With dead ends: 14631 [2023-12-25 20:01:21,904 INFO L226 Difference]: Without dead ends: 9802 [2023-12-25 20:01:21,913 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 20:01:21,914 INFO L413 NwaCegarLoop]: 8713 mSDtfsCounter, 8045 mSDsluCounter, 17014 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8045 SdHoareTripleChecker+Valid, 25727 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:21,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8045 Valid, 25727 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2023-12-25 20:01:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 4985. [2023-12-25 20:01:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4985 states, 4984 states have (on average 1.6695425361155698) internal successors, (8321), 4984 states have internal predecessors, (8321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4985 states to 4985 states and 8321 transitions. [2023-12-25 20:01:22,028 INFO L78 Accepts]: Start accepts. Automaton has 4985 states and 8321 transitions. Word has length 274 [2023-12-25 20:01:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:22,028 INFO L495 AbstractCegarLoop]: Abstraction has 4985 states and 8321 transitions. [2023-12-25 20:01:22,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4985 states and 8321 transitions. [2023-12-25 20:01:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 20:01:22,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:22,032 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] [2023-12-25 20:01:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 20:01:22,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:22,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1081183912, now seen corresponding path program 1 times [2023-12-25 20:01:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497310193] [2023-12-25 20:01:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:22,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:22,733 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 20:01:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497310193] [2023-12-25 20:01:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497310193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618418993] [2023-12-25 20:01:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:01:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:01:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 20:01:22,740 INFO L87 Difference]: Start difference. First operand 4985 states and 8321 transitions. Second operand has 5 states, 5 states have (on average 55.0) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:26,654 INFO L93 Difference]: Finished difference Result 14645 states and 24449 transitions. [2023-12-25 20:01:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 20:01:26,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2023-12-25 20:01:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:26,692 INFO L225 Difference]: With dead ends: 14645 [2023-12-25 20:01:26,692 INFO L226 Difference]: Without dead ends: 9814 [2023-12-25 20:01:26,700 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 20:01:26,706 INFO L413 NwaCegarLoop]: 6651 mSDtfsCounter, 24167 mSDsluCounter, 13296 mSDsCounter, 0 mSdLazyCounter, 4997 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24167 SdHoareTripleChecker+Valid, 19947 SdHoareTripleChecker+Invalid, 4998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:26,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24167 Valid, 19947 Invalid, 4998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4997 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 20:01:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2023-12-25 20:01:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 5228. [2023-12-25 20:01:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 1.6690262100631337) internal successors, (8724), 5227 states have internal predecessors, (8724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 8724 transitions. [2023-12-25 20:01:26,799 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 8724 transitions. Word has length 275 [2023-12-25 20:01:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:26,800 INFO L495 AbstractCegarLoop]: Abstraction has 5228 states and 8724 transitions. [2023-12-25 20:01:26,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 8724 transitions. [2023-12-25 20:01:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 20:01:26,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:26,802 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] [2023-12-25 20:01:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 20:01:26,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:26,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 688156902, now seen corresponding path program 1 times [2023-12-25 20:01:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:26,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188085967] [2023-12-25 20:01:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:27,537 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 20:01:27,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:27,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188085967] [2023-12-25 20:01:27,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188085967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:27,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:27,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:01:27,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245438663] [2023-12-25 20:01:27,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:01:27,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:01:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:01:27,540 INFO L87 Difference]: Start difference. First operand 5228 states and 8724 transitions. Second operand has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 6 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:27,931 INFO L93 Difference]: Finished difference Result 14878 states and 24837 transitions. [2023-12-25 20:01:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:01:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 6 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2023-12-25 20:01:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:27,950 INFO L225 Difference]: With dead ends: 14878 [2023-12-25 20:01:27,951 INFO L226 Difference]: Without dead ends: 10047 [2023-12-25 20:01:27,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:01:27,958 INFO L413 NwaCegarLoop]: 8702 mSDtfsCounter, 40643 mSDsluCounter, 25292 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40643 SdHoareTripleChecker+Valid, 33994 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:27,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40643 Valid, 33994 Invalid, 69 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 20:01:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10047 states. [2023-12-25 20:01:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10047 to 5228. [2023-12-25 20:01:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 1.6690262100631337) internal successors, (8724), 5227 states have internal predecessors, (8724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 8724 transitions. [2023-12-25 20:01:28,099 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 8724 transitions. Word has length 275 [2023-12-25 20:01:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:28,099 INFO L495 AbstractCegarLoop]: Abstraction has 5228 states and 8724 transitions. [2023-12-25 20:01:28,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 6 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 8724 transitions. [2023-12-25 20:01:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:28,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:28,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 20:01:28,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:28,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1096394854, now seen corresponding path program 1 times [2023-12-25 20:01:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113409894] [2023-12-25 20:01:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:28,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:28,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628571383] [2023-12-25 20:01:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:28,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:28,502 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 20:01:28,510 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 20:01:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:31,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 14085 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:01:31,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:01:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:01:32,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:01:32,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:32,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113409894] [2023-12-25 20:01:32,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:01:32,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628571383] [2023-12-25 20:01:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628571383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496616272] [2023-12-25 20:01:32,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:32,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:32,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:32,058 INFO L87 Difference]: Start difference. First operand 5228 states and 8724 transitions. Second operand has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:32,155 INFO L93 Difference]: Finished difference Result 10069 states and 16805 transitions. [2023-12-25 20:01:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:32,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:01:32,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:32,173 INFO L225 Difference]: With dead ends: 10069 [2023-12-25 20:01:32,173 INFO L226 Difference]: Without dead ends: 5238 [2023-12-25 20:01:32,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3388 GetRequests, 3386 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 20:01:32,178 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 12 mSDsluCounter, 16614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24926 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:32,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24926 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2023-12-25 20:01:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 5230. [2023-12-25 20:01:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 1.668770319372729) internal successors, (8726), 5229 states have internal predecessors, (8726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 8726 transitions. [2023-12-25 20:01:32,229 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 8726 transitions. Word has length 3389 [2023-12-25 20:01:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:32,231 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 8726 transitions. [2023-12-25 20:01:32,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 8726 transitions. [2023-12-25 20:01:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:32,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:32,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:32,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 20:01:32,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-25 20:01:32,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:32,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1957691916, now seen corresponding path program 1 times [2023-12-25 20:01:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063868394] [2023-12-25 20:01:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:32,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191438216] [2023-12-25 20:01:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:32,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:32,914 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 20:01:32,960 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 20:01:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:36,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 14086 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:01:36,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:01:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:01:36,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:01:36,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063868394] [2023-12-25 20:01:36,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:01:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191438216] [2023-12-25 20:01:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191438216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:36,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:36,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:36,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995850545] [2023-12-25 20:01:36,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:36,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:36,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:36,689 INFO L87 Difference]: Start difference. First operand 5230 states and 8726 transitions. Second operand has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:36,797 INFO L93 Difference]: Finished difference Result 10072 states and 16807 transitions. [2023-12-25 20:01:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:01:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:36,806 INFO L225 Difference]: With dead ends: 10072 [2023-12-25 20:01:36,806 INFO L226 Difference]: Without dead ends: 5239 [2023-12-25 20:01:36,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3388 GetRequests, 3386 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 20:01:36,812 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 12 mSDsluCounter, 16614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24926 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:36,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24926 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2023-12-25 20:01:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5231. [2023-12-25 20:01:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 1.668642447418738) internal successors, (8727), 5230 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 8727 transitions. [2023-12-25 20:01:36,877 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 8727 transitions. Word has length 3389 [2023-12-25 20:01:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:36,877 INFO L495 AbstractCegarLoop]: Abstraction has 5231 states and 8727 transitions. [2023-12-25 20:01:36,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 8727 transitions. [2023-12-25 20:01:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:36,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:36,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:37,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 20:01:37,186 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,SelfDestructingSolverStorable6 [2023-12-25 20:01:37,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:37,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1952430210, now seen corresponding path program 1 times [2023-12-25 20:01:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203638136] [2023-12-25 20:01:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:37,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:37,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961333993] [2023-12-25 20:01:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:37,458 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 20:01:37,493 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 20:01:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:40,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 14087 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:01:40,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:01:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:01:40,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:01:40,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203638136] [2023-12-25 20:01:40,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:01:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961333993] [2023-12-25 20:01:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961333993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:40,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:40,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144851342] [2023-12-25 20:01:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:40,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:40,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:40,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:40,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:40,913 INFO L87 Difference]: Start difference. First operand 5231 states and 8727 transitions. Second operand has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:41,002 INFO L93 Difference]: Finished difference Result 10074 states and 16809 transitions. [2023-12-25 20:01:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:01:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:41,011 INFO L225 Difference]: With dead ends: 10074 [2023-12-25 20:01:41,011 INFO L226 Difference]: Without dead ends: 5240 [2023-12-25 20:01:41,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3388 GetRequests, 3386 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 20:01:41,017 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 12 mSDsluCounter, 16614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24926 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:41,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24926 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5240 states. [2023-12-25 20:01:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5240 to 5232. [2023-12-25 20:01:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5231 states have (on average 1.668514624354808) internal successors, (8728), 5231 states have internal predecessors, (8728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 8728 transitions. [2023-12-25 20:01:41,072 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 8728 transitions. Word has length 3389 [2023-12-25 20:01:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:41,075 INFO L495 AbstractCegarLoop]: Abstraction has 5232 states and 8728 transitions. [2023-12-25 20:01:41,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 8728 transitions. [2023-12-25 20:01:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:41,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:41,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:41,174 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 20:01:41,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:41,353 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:41,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2129016140, now seen corresponding path program 1 times [2023-12-25 20:01:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:41,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385167444] [2023-12-25 20:01:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:41,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:41,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:41,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088132073] [2023-12-25 20:01:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:41,562 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 20:01:41,589 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 20:01:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:44,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 14088 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:01:44,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:01:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:01:44,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:01:44,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385167444] [2023-12-25 20:01:44,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:01:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088132073] [2023-12-25 20:01:44,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088132073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:44,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:44,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:44,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761680826] [2023-12-25 20:01:44,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:44,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:44,714 INFO L87 Difference]: Start difference. First operand 5232 states and 8728 transitions. Second operand has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:44,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:44,798 INFO L93 Difference]: Finished difference Result 10076 states and 16811 transitions. [2023-12-25 20:01:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:44,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:01:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:44,807 INFO L225 Difference]: With dead ends: 10076 [2023-12-25 20:01:44,807 INFO L226 Difference]: Without dead ends: 5241 [2023-12-25 20:01:44,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3388 GetRequests, 3386 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 20:01:44,813 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 12 mSDsluCounter, 16614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24926 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:44,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24926 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2023-12-25 20:01:44,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 5233. [2023-12-25 20:01:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.668386850152905) internal successors, (8729), 5232 states have internal predecessors, (8729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 8729 transitions. [2023-12-25 20:01:44,864 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 8729 transitions. Word has length 3389 [2023-12-25 20:01:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:44,865 INFO L495 AbstractCegarLoop]: Abstraction has 5233 states and 8729 transitions. [2023-12-25 20:01:44,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 8729 transitions. [2023-12-25 20:01:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:44,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:44,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:44,981 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 20:01:45,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:45,145 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:45,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:45,146 INFO L85 PathProgramCache]: Analyzing trace with hash 465037338, now seen corresponding path program 1 times [2023-12-25 20:01:45,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:45,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920180067] [2023-12-25 20:01:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:45,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:45,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057483903] [2023-12-25 20:01:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:45,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:45,347 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 20:01:45,374 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 20:01:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:48,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 14089 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:01:48,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:01:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:01:48,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:01:48,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920180067] [2023-12-25 20:01:48,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:01:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057483903] [2023-12-25 20:01:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057483903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:48,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957523301] [2023-12-25 20:01:48,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:48,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:48,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:48,584 INFO L87 Difference]: Start difference. First operand 5233 states and 8729 transitions. Second operand has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:48,775 INFO L93 Difference]: Finished difference Result 10078 states and 16813 transitions. [2023-12-25 20:01:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:48,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:01:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:48,794 INFO L225 Difference]: With dead ends: 10078 [2023-12-25 20:01:48,794 INFO L226 Difference]: Without dead ends: 5242 [2023-12-25 20:01:48,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3388 GetRequests, 3386 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 20:01:48,798 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 12 mSDsluCounter, 16614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24926 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:48,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24926 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5242 states. [2023-12-25 20:01:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5242 to 5234. [2023-12-25 20:01:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.6682591247850183) internal successors, (8730), 5233 states have internal predecessors, (8730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8730 transitions. [2023-12-25 20:01:48,850 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8730 transitions. Word has length 3389 [2023-12-25 20:01:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:48,852 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 8730 transitions. [2023-12-25 20:01:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8730 transitions. [2023-12-25 20:01:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:48,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:48,917 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:48,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-25 20:01:49,132 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,SelfDestructingSolverStorable9 [2023-12-25 20:01:49,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:49,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1862145304, now seen corresponding path program 1 times [2023-12-25 20:01:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:49,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443547531] [2023-12-25 20:01:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:49,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:49,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63432678] [2023-12-25 20:01:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:49,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:49,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:49,352 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 20:01:49,367 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 20:01:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:52,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 14090 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:01:52,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:01:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:01:52,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:01:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:01:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443547531] [2023-12-25 20:01:52,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:01:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63432678] [2023-12-25 20:01:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63432678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:01:52,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:01:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:01:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332142257] [2023-12-25 20:01:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:01:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:01:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:01:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:01:52,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:01:52,618 INFO L87 Difference]: Start difference. First operand 5234 states and 8730 transitions. Second operand has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:01:52,703 INFO L93 Difference]: Finished difference Result 10080 states and 16815 transitions. [2023-12-25 20:01:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:01:52,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:01:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:01:52,713 INFO L225 Difference]: With dead ends: 10080 [2023-12-25 20:01:52,714 INFO L226 Difference]: Without dead ends: 5243 [2023-12-25 20:01:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3388 GetRequests, 3386 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 20:01:52,718 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 12 mSDsluCounter, 16614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24926 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:01:52,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24926 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 20:01:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2023-12-25 20:01:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 5235. [2023-12-25 20:01:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 1.6681314482231562) internal successors, (8731), 5234 states have internal predecessors, (8731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 8731 transitions. [2023-12-25 20:01:52,767 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 8731 transitions. Word has length 3389 [2023-12-25 20:01:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:01:52,768 INFO L495 AbstractCegarLoop]: Abstraction has 5235 states and 8731 transitions. [2023-12-25 20:01:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 847.25) internal successors, (3389), 4 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:01:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 8731 transitions. [2023-12-25 20:01:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 20:01:52,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:01:52,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:01:52,870 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 20:01:53,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:53,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:01:53,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:01:53,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1138232246, now seen corresponding path program 1 times [2023-12-25 20:01:53,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:01:53,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399522316] [2023-12-25 20:01:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:01:53,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:01:53,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297671442] [2023-12-25 20:01:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:01:53,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:01:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:01:53,250 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 20:01:53,272 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 20:01:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:01:56,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 14091 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 20:01:56,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:02:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:02:08,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:02:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:02:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399522316] [2023-12-25 20:02:08,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:02:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297671442] [2023-12-25 20:02:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297671442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:02:08,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:02:08,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 20:02:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559329139] [2023-12-25 20:02:08,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:02:08,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:02:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:02:08,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:02:08,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 20:02:08,458 INFO L87 Difference]: Start difference. First operand 5235 states and 8731 transitions. Second operand has 5 states, 5 states have (on average 677.8) internal successors, (3389), 5 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:02:12,325 INFO L93 Difference]: Finished difference Result 14658 states and 24456 transitions. [2023-12-25 20:02:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:02:12,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 677.8) internal successors, (3389), 5 states have internal predecessors, (3389), 0 states have call successors, (0), 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 3389 [2023-12-25 20:02:12,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:02:12,349 INFO L225 Difference]: With dead ends: 14658 [2023-12-25 20:02:12,349 INFO L226 Difference]: Without dead ends: 9820 [2023-12-25 20:02:12,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3390 GetRequests, 3385 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 20:02:12,362 INFO L413 NwaCegarLoop]: 7114 mSDtfsCounter, 4716 mSDsluCounter, 20399 mSDsCounter, 0 mSdLazyCounter, 5731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 27513 SdHoareTripleChecker+Invalid, 5731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:02:12,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4716 Valid, 27513 Invalid, 5731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5731 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 20:02:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2023-12-25 20:02:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9812. [2023-12-25 20:02:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9812 states, 9811 states have (on average 1.6685353175007644) internal successors, (16370), 9811 states have internal predecessors, (16370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9812 states to 9812 states and 16370 transitions. [2023-12-25 20:02:12,489 INFO L78 Accepts]: Start accepts. Automaton has 9812 states and 16370 transitions. Word has length 3389 [2023-12-25 20:02:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:02:12,491 INFO L495 AbstractCegarLoop]: Abstraction has 9812 states and 16370 transitions. [2023-12-25 20:02:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 677.8) internal successors, (3389), 5 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9812 states and 16370 transitions. [2023-12-25 20:02:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3391 [2023-12-25 20:02:12,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:02:12,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:02:12,587 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 20:02:12,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:02:12,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:02:12,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:02:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 560697237, now seen corresponding path program 1 times [2023-12-25 20:02:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:02:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937695049] [2023-12-25 20:02:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:02:12,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:02:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140732860] [2023-12-25 20:02:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:12,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:02:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:02:12,974 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 20:02:12,992 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 20:02:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:02:16,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 14094 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 20:02:16,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:02:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:02:26,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:02:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:02:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937695049] [2023-12-25 20:02:26,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:02:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140732860] [2023-12-25 20:02:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140732860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:02:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:02:26,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 20:02:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976413119] [2023-12-25 20:02:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:02:26,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:02:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:02:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:02:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:02:26,556 INFO L87 Difference]: Start difference. First operand 9812 states and 16370 transitions. Second operand has 6 states, 6 states have (on average 565.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:02:28,460 INFO L93 Difference]: Finished difference Result 23968 states and 39968 transitions. [2023-12-25 20:02:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:02:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 565.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 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 3390 [2023-12-25 20:02:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:02:28,473 INFO L225 Difference]: With dead ends: 23968 [2023-12-25 20:02:28,473 INFO L226 Difference]: Without dead ends: 14555 [2023-12-25 20:02:28,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3392 GetRequests, 3385 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 20:02:28,483 INFO L413 NwaCegarLoop]: 7031 mSDtfsCounter, 29372 mSDsluCounter, 15099 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29372 SdHoareTripleChecker+Valid, 22130 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:02:28,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29372 Valid, 22130 Invalid, 3534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 20:02:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14555 states. [2023-12-25 20:02:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14555 to 12023. [2023-12-25 20:02:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12023 states, 12022 states have (on average 1.6691898186657794) internal successors, (20067), 12022 states have internal predecessors, (20067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12023 states to 12023 states and 20067 transitions. [2023-12-25 20:02:28,619 INFO L78 Accepts]: Start accepts. Automaton has 12023 states and 20067 transitions. Word has length 3390 [2023-12-25 20:02:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:02:28,620 INFO L495 AbstractCegarLoop]: Abstraction has 12023 states and 20067 transitions. [2023-12-25 20:02:28,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 565.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 12023 states and 20067 transitions. [2023-12-25 20:02:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3392 [2023-12-25 20:02:28,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:02:28,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:02:28,729 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 20:02:28,900 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,SelfDestructingSolverStorable12 [2023-12-25 20:02:28,901 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:02:28,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:02:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash -139192674, now seen corresponding path program 1 times [2023-12-25 20:02:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:02:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065907212] [2023-12-25 20:02:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:02:29,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:02:29,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266639904] [2023-12-25 20:02:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:29,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:02:29,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:02:29,086 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 20:02:29,088 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 20:02:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:02:32,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 14097 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 20:02:32,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:02:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:02:33,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:02:33,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:02:33,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065907212] [2023-12-25 20:02:33,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:02:33,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266639904] [2023-12-25 20:02:33,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266639904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:02:33,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:02:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:02:33,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528686592] [2023-12-25 20:02:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:02:33,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:02:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:02:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:02:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:02:33,534 INFO L87 Difference]: Start difference. First operand 12023 states and 20067 transitions. Second operand has 6 states, 6 states have (on average 565.1666666666666) internal successors, (3391), 6 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:02:36,842 INFO L93 Difference]: Finished difference Result 31402 states and 52396 transitions. [2023-12-25 20:02:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:02:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 565.1666666666666) internal successors, (3391), 6 states have internal predecessors, (3391), 0 states have call successors, (0), 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 3391 [2023-12-25 20:02:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:02:36,864 INFO L225 Difference]: With dead ends: 31402 [2023-12-25 20:02:36,864 INFO L226 Difference]: Without dead ends: 20245 [2023-12-25 20:02:36,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3393 GetRequests, 3386 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 20:02:36,879 INFO L413 NwaCegarLoop]: 10084 mSDtfsCounter, 16713 mSDsluCounter, 26789 mSDsCounter, 0 mSdLazyCounter, 8232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16713 SdHoareTripleChecker+Valid, 36873 SdHoareTripleChecker+Invalid, 8233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:02:36,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16713 Valid, 36873 Invalid, 8233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 8232 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 20:02:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20245 states. [2023-12-25 20:02:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20245 to 15511. [2023-12-25 20:02:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15511 states, 15510 states have (on average 1.6689877498388137) internal successors, (25886), 15510 states have internal predecessors, (25886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15511 states to 15511 states and 25886 transitions. [2023-12-25 20:02:37,111 INFO L78 Accepts]: Start accepts. Automaton has 15511 states and 25886 transitions. Word has length 3391 [2023-12-25 20:02:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:02:37,112 INFO L495 AbstractCegarLoop]: Abstraction has 15511 states and 25886 transitions. [2023-12-25 20:02:37,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 565.1666666666666) internal successors, (3391), 6 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15511 states and 25886 transitions. [2023-12-25 20:02:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3393 [2023-12-25 20:02:37,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:02:37,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:02:37,231 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 20:02:37,400 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,SelfDestructingSolverStorable13 [2023-12-25 20:02:37,401 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:02:37,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:02:37,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1490196810, now seen corresponding path program 1 times [2023-12-25 20:02:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:02:37,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274545862] [2023-12-25 20:02:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:02:37,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:02:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21310427] [2023-12-25 20:02:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:02:37,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:02:37,631 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 20:02:37,649 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 20:02:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:02:40,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 14100 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 20:02:40,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:02:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:02:44,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:02:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:02:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274545862] [2023-12-25 20:02:44,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:02:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21310427] [2023-12-25 20:02:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21310427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:02:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:02:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:02:44,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465009191] [2023-12-25 20:02:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:02:44,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:02:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:02:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:02:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:02:44,813 INFO L87 Difference]: Start difference. First operand 15511 states and 25886 transitions. Second operand has 7 states, 7 states have (on average 484.57142857142856) internal successors, (3392), 7 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:02:50,268 INFO L93 Difference]: Finished difference Result 38380 states and 64039 transitions. [2023-12-25 20:02:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 20:02:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 484.57142857142856) internal successors, (3392), 7 states have internal predecessors, (3392), 0 states have call successors, (0), 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 3392 [2023-12-25 20:02:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:02:50,297 INFO L225 Difference]: With dead ends: 38380 [2023-12-25 20:02:50,297 INFO L226 Difference]: Without dead ends: 25479 [2023-12-25 20:02:50,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3393 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 20:02:50,311 INFO L413 NwaCegarLoop]: 10066 mSDtfsCounter, 15588 mSDsluCounter, 36807 mSDsCounter, 0 mSdLazyCounter, 10381 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15588 SdHoareTripleChecker+Valid, 46873 SdHoareTripleChecker+Invalid, 10385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-25 20:02:50,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15588 Valid, 46873 Invalid, 10385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 10381 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-25 20:02:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25479 states. [2023-12-25 20:02:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25479 to 19037. [2023-12-25 20:02:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19037 states, 19036 states have (on average 1.6686278629964277) internal successors, (31764), 19036 states have internal predecessors, (31764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19037 states to 19037 states and 31764 transitions. [2023-12-25 20:02:50,569 INFO L78 Accepts]: Start accepts. Automaton has 19037 states and 31764 transitions. Word has length 3392 [2023-12-25 20:02:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:02:50,570 INFO L495 AbstractCegarLoop]: Abstraction has 19037 states and 31764 transitions. [2023-12-25 20:02:50,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 484.57142857142856) internal successors, (3392), 7 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 19037 states and 31764 transitions. [2023-12-25 20:02:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3393 [2023-12-25 20:02:50,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:02:50,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:02:50,690 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 20:02:50,852 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,SelfDestructingSolverStorable14 [2023-12-25 20:02:50,852 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:02:50,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:02:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash 469118580, now seen corresponding path program 1 times [2023-12-25 20:02:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:02:50,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006090647] [2023-12-25 20:02:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:50,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:02:51,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:02:51,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60074704] [2023-12-25 20:02:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:51,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:02:51,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:02:51,048 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 20:02:51,073 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 20:02:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:02:54,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 14101 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:02:54,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:02:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:02:55,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:02:55,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:02:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006090647] [2023-12-25 20:02:55,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:02:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60074704] [2023-12-25 20:02:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60074704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:02:55,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:02:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:02:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79269887] [2023-12-25 20:02:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:02:55,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:02:55,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:02:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:02:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:02:55,533 INFO L87 Difference]: Start difference. First operand 19037 states and 31764 transitions. Second operand has 6 states, 6 states have (on average 565.3333333333334) internal successors, (3392), 6 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:02:58,870 INFO L93 Difference]: Finished difference Result 40198 states and 67059 transitions. [2023-12-25 20:02:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:02:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 565.3333333333334) internal successors, (3392), 6 states have internal predecessors, (3392), 0 states have call successors, (0), 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 3392 [2023-12-25 20:02:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:02:58,896 INFO L225 Difference]: With dead ends: 40198 [2023-12-25 20:02:58,896 INFO L226 Difference]: Without dead ends: 23771 [2023-12-25 20:02:58,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3393 GetRequests, 3387 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 20:02:58,910 INFO L413 NwaCegarLoop]: 6650 mSDtfsCounter, 10886 mSDsluCounter, 19930 mSDsCounter, 0 mSdLazyCounter, 6675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10886 SdHoareTripleChecker+Valid, 26580 SdHoareTripleChecker+Invalid, 6676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:02:58,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10886 Valid, 26580 Invalid, 6676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6675 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 20:02:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23771 states. [2023-12-25 20:02:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23771 to 19071. [2023-12-25 20:02:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19071 states, 19070 states have (on average 1.668484530676455) internal successors, (31818), 19070 states have internal predecessors, (31818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19071 states to 19071 states and 31818 transitions. [2023-12-25 20:02:59,186 INFO L78 Accepts]: Start accepts. Automaton has 19071 states and 31818 transitions. Word has length 3392 [2023-12-25 20:02:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:02:59,188 INFO L495 AbstractCegarLoop]: Abstraction has 19071 states and 31818 transitions. [2023-12-25 20:02:59,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 565.3333333333334) internal successors, (3392), 6 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:02:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 19071 states and 31818 transitions. [2023-12-25 20:02:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3394 [2023-12-25 20:02:59,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:02:59,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:02:59,288 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 20:02:59,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-25 20:02:59,476 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:02:59,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:02:59,478 INFO L85 PathProgramCache]: Analyzing trace with hash -148351103, now seen corresponding path program 1 times [2023-12-25 20:02:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:02:59,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53284409] [2023-12-25 20:02:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:02:59,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:02:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924760031] [2023-12-25 20:02:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:02:59,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:02:59,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:02:59,676 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 20:02:59,677 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 20:03:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:03:02,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 14103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 20:03:02,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:03:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:03:06,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:03:06,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:03:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53284409] [2023-12-25 20:03:06,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:03:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924760031] [2023-12-25 20:03:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924760031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:03:06,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:03:06,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:03:06,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866178699] [2023-12-25 20:03:06,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:03:06,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:03:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:03:06,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:03:06,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:03:06,508 INFO L87 Difference]: Start difference. First operand 19071 states and 31818 transitions. Second operand has 7 states, 7 states have (on average 484.7142857142857) internal successors, (3393), 7 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:03:11,217 INFO L93 Difference]: Finished difference Result 40230 states and 67107 transitions. [2023-12-25 20:03:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 20:03:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 484.7142857142857) internal successors, (3393), 7 states have internal predecessors, (3393), 0 states have call successors, (0), 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 3393 [2023-12-25 20:03:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:03:11,242 INFO L225 Difference]: With dead ends: 40230 [2023-12-25 20:03:11,242 INFO L226 Difference]: Without dead ends: 23769 [2023-12-25 20:03:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3394 GetRequests, 3387 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 20:03:11,269 INFO L413 NwaCegarLoop]: 10048 mSDtfsCounter, 15590 mSDsluCounter, 32380 mSDsCounter, 0 mSdLazyCounter, 9351 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15590 SdHoareTripleChecker+Valid, 42428 SdHoareTripleChecker+Invalid, 9353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-25 20:03:11,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15590 Valid, 42428 Invalid, 9353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 9351 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-25 20:03:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23769 states. [2023-12-25 20:03:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23769 to 19107. [2023-12-25 20:03:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19107 states, 19106 states have (on average 1.6682717470951534) internal successors, (31874), 19106 states have internal predecessors, (31874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19107 states to 19107 states and 31874 transitions. [2023-12-25 20:03:11,459 INFO L78 Accepts]: Start accepts. Automaton has 19107 states and 31874 transitions. Word has length 3393 [2023-12-25 20:03:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:03:11,461 INFO L495 AbstractCegarLoop]: Abstraction has 19107 states and 31874 transitions. [2023-12-25 20:03:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 484.7142857142857) internal successors, (3393), 7 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19107 states and 31874 transitions. [2023-12-25 20:03:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3394 [2023-12-25 20:03:11,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:03:11,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:03:11,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 20:03:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-25 20:03:11,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:03:11,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:03:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 460883843, now seen corresponding path program 1 times [2023-12-25 20:03:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:03:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920653558] [2023-12-25 20:03:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:03:11,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:03:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812497367] [2023-12-25 20:03:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:11,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:03:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:03:11,980 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 20:03:12,011 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 20:03:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:03:15,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 14104 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:03:15,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:03:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:03:16,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:03:16,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:03:16,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920653558] [2023-12-25 20:03:16,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:03:16,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812497367] [2023-12-25 20:03:16,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812497367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:03:16,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:03:16,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:03:16,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939881840] [2023-12-25 20:03:16,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:03:16,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:03:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:03:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:03:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:03:16,413 INFO L87 Difference]: Start difference. First operand 19107 states and 31874 transitions. Second operand has 6 states, 6 states have (on average 565.5) internal successors, (3393), 6 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:03:19,267 INFO L93 Difference]: Finished difference Result 40304 states and 67223 transitions. [2023-12-25 20:03:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:03:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 565.5) internal successors, (3393), 6 states have internal predecessors, (3393), 0 states have call successors, (0), 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 3393 [2023-12-25 20:03:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:03:19,290 INFO L225 Difference]: With dead ends: 40304 [2023-12-25 20:03:19,290 INFO L226 Difference]: Without dead ends: 23807 [2023-12-25 20:03:19,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3394 GetRequests, 3388 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 20:03:19,304 INFO L413 NwaCegarLoop]: 6650 mSDtfsCounter, 10873 mSDsluCounter, 19930 mSDsCounter, 0 mSdLazyCounter, 6675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10873 SdHoareTripleChecker+Valid, 26580 SdHoareTripleChecker+Invalid, 6676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:03:19,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10873 Valid, 26580 Invalid, 6676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6675 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 20:03:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23807 states. [2023-12-25 20:03:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23807 to 19143. [2023-12-25 20:03:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19143 states, 19142 states have (on average 1.668164246160276) internal successors, (31932), 19142 states have internal predecessors, (31932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19143 states to 19143 states and 31932 transitions. [2023-12-25 20:03:19,489 INFO L78 Accepts]: Start accepts. Automaton has 19143 states and 31932 transitions. Word has length 3393 [2023-12-25 20:03:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:03:19,491 INFO L495 AbstractCegarLoop]: Abstraction has 19143 states and 31932 transitions. [2023-12-25 20:03:19,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 565.5) internal successors, (3393), 6 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 19143 states and 31932 transitions. [2023-12-25 20:03:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3395 [2023-12-25 20:03:19,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:03:19,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:03:19,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-25 20:03:19,832 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,SelfDestructingSolverStorable17 [2023-12-25 20:03:19,832 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:03:19,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:03:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1659529722, now seen corresponding path program 1 times [2023-12-25 20:03:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:03:19,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090119046] [2023-12-25 20:03:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:03:20,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:03:20,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323724648] [2023-12-25 20:03:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:20,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:03:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:03:20,024 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 20:03:20,050 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 20:03:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:03:23,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 14106 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 20:03:23,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:03:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:03:30,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:03:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:03:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090119046] [2023-12-25 20:03:30,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:03:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323724648] [2023-12-25 20:03:30,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323724648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:03:30,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:03:30,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:03:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959952037] [2023-12-25 20:03:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:03:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:03:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:03:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:03:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:03:30,757 INFO L87 Difference]: Start difference. First operand 19143 states and 31932 transitions. Second operand has 7 states, 7 states have (on average 484.85714285714283) internal successors, (3394), 7 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:03:35,312 INFO L93 Difference]: Finished difference Result 40338 states and 67275 transitions. [2023-12-25 20:03:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 20:03:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 484.85714285714283) internal successors, (3394), 7 states have internal predecessors, (3394), 0 states have call successors, (0), 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 3394 [2023-12-25 20:03:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:03:35,335 INFO L225 Difference]: With dead ends: 40338 [2023-12-25 20:03:35,336 INFO L226 Difference]: Without dead ends: 23805 [2023-12-25 20:03:35,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3395 GetRequests, 3388 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 20:03:35,349 INFO L413 NwaCegarLoop]: 7596 mSDtfsCounter, 12629 mSDsluCounter, 27477 mSDsCounter, 0 mSdLazyCounter, 8124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12629 SdHoareTripleChecker+Valid, 35073 SdHoareTripleChecker+Invalid, 8126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:03:35,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12629 Valid, 35073 Invalid, 8126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8124 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 20:03:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23805 states. [2023-12-25 20:03:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23805 to 22575. [2023-12-25 20:03:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22575 states, 22574 states have (on average 1.667759369185789) internal successors, (37648), 22574 states have internal predecessors, (37648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22575 states to 22575 states and 37648 transitions. [2023-12-25 20:03:35,547 INFO L78 Accepts]: Start accepts. Automaton has 22575 states and 37648 transitions. Word has length 3394 [2023-12-25 20:03:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:03:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 22575 states and 37648 transitions. [2023-12-25 20:03:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 484.85714285714283) internal successors, (3394), 7 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22575 states and 37648 transitions. [2023-12-25 20:03:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3395 [2023-12-25 20:03:35,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:03:35,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:03:35,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-25 20:03:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:03:35,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:03:35,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:03:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -929023432, now seen corresponding path program 1 times [2023-12-25 20:03:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:03:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018456775] [2023-12-25 20:03:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:03:36,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:03:36,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425255068] [2023-12-25 20:03:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:36,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:03:36,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:03:36,042 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 20:03:36,043 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 20:03:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:03:39,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 14107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:03:39,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:03:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:03:43,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:03:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:03:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018456775] [2023-12-25 20:03:43,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:03:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425255068] [2023-12-25 20:03:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425255068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:03:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:03:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:03:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325564746] [2023-12-25 20:03:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:03:43,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:03:43,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:03:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:03:43,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:03:43,621 INFO L87 Difference]: Start difference. First operand 22575 states and 37648 transitions. Second operand has 6 states, 6 states have (on average 565.6666666666666) internal successors, (3394), 6 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:47,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:03:47,465 INFO L93 Difference]: Finished difference Result 47204 states and 78711 transitions. [2023-12-25 20:03:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:03:47,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 565.6666666666666) internal successors, (3394), 6 states have internal predecessors, (3394), 0 states have call successors, (0), 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 3394 [2023-12-25 20:03:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:03:47,489 INFO L225 Difference]: With dead ends: 47204 [2023-12-25 20:03:47,489 INFO L226 Difference]: Without dead ends: 27239 [2023-12-25 20:03:47,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3395 GetRequests, 3389 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 20:03:47,504 INFO L413 NwaCegarLoop]: 6650 mSDtfsCounter, 12505 mSDsluCounter, 19930 mSDsCounter, 0 mSdLazyCounter, 6675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12505 SdHoareTripleChecker+Valid, 26580 SdHoareTripleChecker+Invalid, 6676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 20:03:47,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12505 Valid, 26580 Invalid, 6676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6675 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 20:03:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27239 states. [2023-12-25 20:03:47,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27239 to 26007. [2023-12-25 20:03:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26007 states, 26006 states have (on average 1.667538260401446) internal successors, (43366), 26006 states have internal predecessors, (43366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26007 states to 26007 states and 43366 transitions. [2023-12-25 20:03:47,746 INFO L78 Accepts]: Start accepts. Automaton has 26007 states and 43366 transitions. Word has length 3394 [2023-12-25 20:03:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:03:47,748 INFO L495 AbstractCegarLoop]: Abstraction has 26007 states and 43366 transitions. [2023-12-25 20:03:47,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 565.6666666666666) internal successors, (3394), 6 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:03:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 26007 states and 43366 transitions. [2023-12-25 20:03:47,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3396 [2023-12-25 20:03:47,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:03:47,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:03:47,844 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 20:03:48,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:03:48,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:03:48,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:03:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash 470298505, now seen corresponding path program 1 times [2023-12-25 20:03:48,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:03:48,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826841862] [2023-12-25 20:03:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:03:48,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:03:48,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960201399] [2023-12-25 20:03:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:03:48,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:03:48,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:03:48,211 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 20:03:48,215 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 20:03:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:03:51,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 14109 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 20:03:51,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:03:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:03:57,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:03:57,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:03:57,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826841862] [2023-12-25 20:03:57,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:03:57,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960201399] [2023-12-25 20:03:57,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960201399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:03:57,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:03:57,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:03:57,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219796936] [2023-12-25 20:03:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:03:57,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:03:57,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:03:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:03:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:03:57,796 INFO L87 Difference]: Start difference. First operand 26007 states and 43366 transitions. Second operand has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:04:02,508 INFO L93 Difference]: Finished difference Result 50634 states and 84423 transitions. [2023-12-25 20:04:02,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 20:04:02,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 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 3395 [2023-12-25 20:04:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:04:02,538 INFO L225 Difference]: With dead ends: 50634 [2023-12-25 20:04:02,539 INFO L226 Difference]: Without dead ends: 27237 [2023-12-25 20:04:02,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3396 GetRequests, 3389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 20:04:02,557 INFO L413 NwaCegarLoop]: 7590 mSDtfsCounter, 16152 mSDsluCounter, 27466 mSDsCounter, 0 mSdLazyCounter, 8109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16152 SdHoareTripleChecker+Valid, 35056 SdHoareTripleChecker+Invalid, 8111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-25 20:04:02,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16152 Valid, 35056 Invalid, 8111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8109 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-25 20:04:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27237 states. [2023-12-25 20:04:02,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27237 to 26019. [2023-12-25 20:04:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26019 states, 26018 states have (on average 1.6673841186870628) internal successors, (43382), 26018 states have internal predecessors, (43382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26019 states to 26019 states and 43382 transitions. [2023-12-25 20:04:02,813 INFO L78 Accepts]: Start accepts. Automaton has 26019 states and 43382 transitions. Word has length 3395 [2023-12-25 20:04:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:04:02,814 INFO L495 AbstractCegarLoop]: Abstraction has 26019 states and 43382 transitions. [2023-12-25 20:04:02,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 26019 states and 43382 transitions. [2023-12-25 20:04:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3396 [2023-12-25 20:04:02,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:04:02,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:04:02,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-25 20:04:03,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:03,096 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:04:03,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:04:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1829529355, now seen corresponding path program 1 times [2023-12-25 20:04:03,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:04:03,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391180221] [2023-12-25 20:04:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:04:03,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:04:03,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468950044] [2023-12-25 20:04:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:03,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:03,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:04:03,271 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 20:04:03,312 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 20:04:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:04:06,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 14110 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:04:06,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:04:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:04:11,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:04:11,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:04:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391180221] [2023-12-25 20:04:11,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:04:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468950044] [2023-12-25 20:04:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468950044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:04:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:04:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:04:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714881978] [2023-12-25 20:04:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:04:11,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:04:11,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:04:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:04:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:04:11,505 INFO L87 Difference]: Start difference. First operand 26019 states and 43382 transitions. Second operand has 6 states, 6 states have (on average 565.8333333333334) internal successors, (3395), 6 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:04:14,963 INFO L93 Difference]: Finished difference Result 50660 states and 84459 transitions. [2023-12-25 20:04:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:04:14,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 565.8333333333334) internal successors, (3395), 6 states have internal predecessors, (3395), 0 states have call successors, (0), 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 3395 [2023-12-25 20:04:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:04:15,003 INFO L225 Difference]: With dead ends: 50660 [2023-12-25 20:04:15,004 INFO L226 Difference]: Without dead ends: 27251 [2023-12-25 20:04:15,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3396 GetRequests, 3390 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 20:04:15,022 INFO L413 NwaCegarLoop]: 6650 mSDtfsCounter, 9720 mSDsluCounter, 19930 mSDsCounter, 0 mSdLazyCounter, 6675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9720 SdHoareTripleChecker+Valid, 26580 SdHoareTripleChecker+Invalid, 6676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-25 20:04:15,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9720 Valid, 26580 Invalid, 6676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6675 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-25 20:04:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27251 states. [2023-12-25 20:04:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27251 to 26031. [2023-12-25 20:04:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26031 states, 26030 states have (on average 1.6673069535151748) internal successors, (43400), 26030 states have internal predecessors, (43400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26031 states to 26031 states and 43400 transitions. [2023-12-25 20:04:15,277 INFO L78 Accepts]: Start accepts. Automaton has 26031 states and 43400 transitions. Word has length 3395 [2023-12-25 20:04:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:04:15,279 INFO L495 AbstractCegarLoop]: Abstraction has 26031 states and 43400 transitions. [2023-12-25 20:04:15,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 565.8333333333334) internal successors, (3395), 6 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 26031 states and 43400 transitions. [2023-12-25 20:04:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3397 [2023-12-25 20:04:15,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:04:15,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:04:15,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 20:04:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:15,548 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:04:15,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:04:15,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1321697498, now seen corresponding path program 1 times [2023-12-25 20:04:15,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:04:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928645320] [2023-12-25 20:04:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:04:15,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:04:15,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385521043] [2023-12-25 20:04:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:15,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:15,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:04:15,758 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:04:15,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 20:04:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:04:19,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 14112 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 20:04:19,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:04:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:04:28,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:04:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:04:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928645320] [2023-12-25 20:04:28,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:04:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385521043] [2023-12-25 20:04:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385521043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:04:28,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:04:28,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 20:04:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646582361] [2023-12-25 20:04:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:04:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 20:04:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:04:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 20:04:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:04:28,806 INFO L87 Difference]: Start difference. First operand 26031 states and 43400 transitions. Second operand has 11 states, 11 states have (on average 308.72727272727275) internal successors, (3396), 10 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:04:35,844 INFO L93 Difference]: Finished difference Result 78294 states and 130485 transitions. [2023-12-25 20:04:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 20:04:35,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 308.72727272727275) internal successors, (3396), 10 states have internal predecessors, (3396), 0 states have call successors, (0), 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 3396 [2023-12-25 20:04:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:04:36,006 INFO L225 Difference]: With dead ends: 78294 [2023-12-25 20:04:36,006 INFO L226 Difference]: Without dead ends: 54873 [2023-12-25 20:04:36,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3403 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-25 20:04:36,017 INFO L413 NwaCegarLoop]: 13567 mSDtfsCounter, 42250 mSDsluCounter, 62664 mSDsCounter, 0 mSdLazyCounter, 16153 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42250 SdHoareTripleChecker+Valid, 76231 SdHoareTripleChecker+Invalid, 16314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 16153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-25 20:04:36,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42250 Valid, 76231 Invalid, 16314 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [161 Valid, 16153 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-25 20:04:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54873 states. [2023-12-25 20:04:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54873 to 31296. [2023-12-25 20:04:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31296 states, 31295 states have (on average 1.6668477392554721) internal successors, (52164), 31295 states have internal predecessors, (52164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31296 states to 31296 states and 52164 transitions. [2023-12-25 20:04:36,424 INFO L78 Accepts]: Start accepts. Automaton has 31296 states and 52164 transitions. Word has length 3396 [2023-12-25 20:04:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:04:36,425 INFO L495 AbstractCegarLoop]: Abstraction has 31296 states and 52164 transitions. [2023-12-25 20:04:36,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 308.72727272727275) internal successors, (3396), 10 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 31296 states and 52164 transitions. [2023-12-25 20:04:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3397 [2023-12-25 20:04:36,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:04:36,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:04:36,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 20:04:36,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:36,705 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:04:36,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:04:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash -43377050, now seen corresponding path program 1 times [2023-12-25 20:04:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:04:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154373522] [2023-12-25 20:04:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:04:36,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:04:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050329927] [2023-12-25 20:04:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:36,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:36,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:04:36,950 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:04:36,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 20:04:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:04:40,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 14114 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 20:04:40,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:04:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:04:48,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:04:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:04:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154373522] [2023-12-25 20:04:48,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:04:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050329927] [2023-12-25 20:04:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050329927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:04:48,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:04:48,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:04:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104303876] [2023-12-25 20:04:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:04:48,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 20:04:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:04:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 20:04:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 20:04:48,536 INFO L87 Difference]: Start difference. First operand 31296 states and 52164 transitions. Second operand has 8 states, 8 states have (on average 424.5) internal successors, (3396), 7 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:04:52,403 INFO L93 Difference]: Finished difference Result 58859 states and 98073 transitions. [2023-12-25 20:04:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:04:52,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 424.5) internal successors, (3396), 7 states have internal predecessors, (3396), 0 states have call successors, (0), 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 3396 [2023-12-25 20:04:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:04:52,437 INFO L225 Difference]: With dead ends: 58859 [2023-12-25 20:04:52,437 INFO L226 Difference]: Without dead ends: 32069 [2023-12-25 20:04:52,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3399 GetRequests, 3389 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-25 20:04:52,463 INFO L413 NwaCegarLoop]: 7028 mSDtfsCounter, 35889 mSDsluCounter, 28148 mSDsCounter, 0 mSdLazyCounter, 6675 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35889 SdHoareTripleChecker+Valid, 35176 SdHoareTripleChecker+Invalid, 6835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 6675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 20:04:52,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35889 Valid, 35176 Invalid, 6835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 6675 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 20:04:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32069 states. [2023-12-25 20:04:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32069 to 31296. [2023-12-25 20:04:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31296 states, 31295 states have (on average 1.6667838312829526) internal successors, (52162), 31295 states have internal predecessors, (52162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31296 states to 31296 states and 52162 transitions. [2023-12-25 20:04:52,777 INFO L78 Accepts]: Start accepts. Automaton has 31296 states and 52162 transitions. Word has length 3396 [2023-12-25 20:04:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:04:52,778 INFO L495 AbstractCegarLoop]: Abstraction has 31296 states and 52162 transitions. [2023-12-25 20:04:52,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 424.5) internal successors, (3396), 7 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:04:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 31296 states and 52162 transitions. [2023-12-25 20:04:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3398 [2023-12-25 20:04:52,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:04:52,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:04:52,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 20:04:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:53,049 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:04:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:04:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1742576705, now seen corresponding path program 1 times [2023-12-25 20:04:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:04:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344257823] [2023-12-25 20:04:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:04:53,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:04:53,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952944856] [2023-12-25 20:04:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:04:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:04:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:04:53,254 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:04:53,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 20:04:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:04:56,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 14118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 20:04:56,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:04:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:04:57,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:04:57,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:04:57,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344257823] [2023-12-25 20:04:57,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:04:57,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952944856] [2023-12-25 20:04:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952944856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:04:57,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:04:57,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:04:57,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717424269] [2023-12-25 20:04:57,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:04:57,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:04:57,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:04:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:04:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:04:57,973 INFO L87 Difference]: Start difference. First operand 31296 states and 52162 transitions. Second operand has 6 states, 6 states have (on average 566.1666666666666) internal successors, (3397), 6 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:05:01,364 INFO L93 Difference]: Finished difference Result 69826 states and 116351 transitions. [2023-12-25 20:05:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:05:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 566.1666666666666) internal successors, (3397), 6 states have internal predecessors, (3397), 0 states have call successors, (0), 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 3397 [2023-12-25 20:05:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:05:01,402 INFO L225 Difference]: With dead ends: 69826 [2023-12-25 20:05:01,402 INFO L226 Difference]: Without dead ends: 42928 [2023-12-25 20:05:01,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3399 GetRequests, 3392 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 20:05:01,425 INFO L413 NwaCegarLoop]: 10009 mSDtfsCounter, 10894 mSDsluCounter, 26633 mSDsCounter, 0 mSdLazyCounter, 8082 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10894 SdHoareTripleChecker+Valid, 36642 SdHoareTripleChecker+Invalid, 8083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:05:01,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10894 Valid, 36642 Invalid, 8083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 8082 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 20:05:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42928 states. [2023-12-25 20:05:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42928 to 31614. [2023-12-25 20:05:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31614 states, 31613 states have (on average 1.6662765318065353) internal successors, (52676), 31613 states have internal predecessors, (52676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31614 states to 31614 states and 52676 transitions. [2023-12-25 20:05:01,772 INFO L78 Accepts]: Start accepts. Automaton has 31614 states and 52676 transitions. Word has length 3397 [2023-12-25 20:05:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:05:01,773 INFO L495 AbstractCegarLoop]: Abstraction has 31614 states and 52676 transitions. [2023-12-25 20:05:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 566.1666666666666) internal successors, (3397), 6 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 31614 states and 52676 transitions. [2023-12-25 20:05:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3399 [2023-12-25 20:05:01,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:05:01,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:05:01,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-25 20:05:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-25 20:05:02,060 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:05:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:05:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1740562568, now seen corresponding path program 1 times [2023-12-25 20:05:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:05:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799900393] [2023-12-25 20:05:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:05:02,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:05:02,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860517933] [2023-12-25 20:05:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:02,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:05:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:05:02,248 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:05:02,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 20:05:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:05:05,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 14121 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:05:05,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:05:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:05:06,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:05:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:05:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799900393] [2023-12-25 20:05:06,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:05:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860517933] [2023-12-25 20:05:06,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860517933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:05:06,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:05:06,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:05:06,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290972838] [2023-12-25 20:05:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:05:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:05:06,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:05:06,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:05:06,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:05:06,820 INFO L87 Difference]: Start difference. First operand 31614 states and 52676 transitions. Second operand has 7 states, 7 states have (on average 485.42857142857144) internal successors, (3398), 7 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:05:15,792 INFO L93 Difference]: Finished difference Result 116050 states and 193300 transitions. [2023-12-25 20:05:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:05:15,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.42857142857144) internal successors, (3398), 7 states have internal predecessors, (3398), 0 states have call successors, (0), 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 3398 [2023-12-25 20:05:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:05:15,883 INFO L225 Difference]: With dead ends: 116050 [2023-12-25 20:05:15,884 INFO L226 Difference]: Without dead ends: 89044 [2023-12-25 20:05:15,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3403 GetRequests, 3392 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:05:15,919 INFO L413 NwaCegarLoop]: 19789 mSDtfsCounter, 19089 mSDsluCounter, 62641 mSDsCounter, 0 mSdLazyCounter, 17511 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19089 SdHoareTripleChecker+Valid, 82430 SdHoareTripleChecker+Invalid, 17514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:05:15,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19089 Valid, 82430 Invalid, 17514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 17511 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-25 20:05:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89044 states. [2023-12-25 20:05:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89044 to 32454. [2023-12-25 20:05:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32454 states, 32453 states have (on average 1.6654546575046991) internal successors, (54049), 32453 states have internal predecessors, (54049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32454 states to 32454 states and 54049 transitions. [2023-12-25 20:05:16,592 INFO L78 Accepts]: Start accepts. Automaton has 32454 states and 54049 transitions. Word has length 3398 [2023-12-25 20:05:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:05:16,593 INFO L495 AbstractCegarLoop]: Abstraction has 32454 states and 54049 transitions. [2023-12-25 20:05:16,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.42857142857144) internal successors, (3398), 7 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 32454 states and 54049 transitions. [2023-12-25 20:05:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3399 [2023-12-25 20:05:16,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:05:16,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:05:16,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 20:05:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 20:05:16,864 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:05:16,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:05:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1361564806, now seen corresponding path program 1 times [2023-12-25 20:05:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:05:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62999370] [2023-12-25 20:05:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:05:17,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:05:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270347160] [2023-12-25 20:05:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:17,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:05:17,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:05:17,192 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:05:17,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 20:05:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:05:20,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 14122 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:05:20,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:05:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:05:22,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:05:22,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:05:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62999370] [2023-12-25 20:05:22,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:05:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270347160] [2023-12-25 20:05:22,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270347160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:05:22,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:05:22,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:05:22,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652558509] [2023-12-25 20:05:22,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:05:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:05:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:05:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:05:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:05:22,155 INFO L87 Difference]: Start difference. First operand 32454 states and 54049 transitions. Second operand has 6 states, 6 states have (on average 566.3333333333334) internal successors, (3398), 6 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:05:26,008 INFO L93 Difference]: Finished difference Result 71710 states and 119417 transitions. [2023-12-25 20:05:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:05:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 566.3333333333334) internal successors, (3398), 6 states have internal predecessors, (3398), 0 states have call successors, (0), 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 3398 [2023-12-25 20:05:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:05:26,048 INFO L225 Difference]: With dead ends: 71710 [2023-12-25 20:05:26,048 INFO L226 Difference]: Without dead ends: 44074 [2023-12-25 20:05:26,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3399 GetRequests, 3393 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 20:05:26,072 INFO L413 NwaCegarLoop]: 6648 mSDtfsCounter, 14470 mSDsluCounter, 19922 mSDsCounter, 0 mSdLazyCounter, 6691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14470 SdHoareTripleChecker+Valid, 26570 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 20:05:26,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14470 Valid, 26570 Invalid, 6692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6691 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 20:05:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44074 states. [2023-12-25 20:05:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44074 to 32754. [2023-12-25 20:05:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32754 states, 32753 states have (on average 1.6651604433181693) internal successors, (54539), 32753 states have internal predecessors, (54539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32754 states to 32754 states and 54539 transitions. [2023-12-25 20:05:26,496 INFO L78 Accepts]: Start accepts. Automaton has 32754 states and 54539 transitions. Word has length 3398 [2023-12-25 20:05:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:05:26,497 INFO L495 AbstractCegarLoop]: Abstraction has 32754 states and 54539 transitions. [2023-12-25 20:05:26,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 566.3333333333334) internal successors, (3398), 6 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 32754 states and 54539 transitions. [2023-12-25 20:05:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3400 [2023-12-25 20:05:26,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:05:26,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:05:26,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 20:05:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-25 20:05:26,783 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:05:26,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:05:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2134688563, now seen corresponding path program 1 times [2023-12-25 20:05:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:05:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801647893] [2023-12-25 20:05:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:05:26,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:05:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586503135] [2023-12-25 20:05:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:26,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:05:26,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:05:26,965 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:05:26,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 20:05:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:05:30,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 14124 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:05:30,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:05:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:05:32,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:05:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:05:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801647893] [2023-12-25 20:05:32,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:05:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586503135] [2023-12-25 20:05:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586503135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:05:32,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:05:32,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:05:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921734326] [2023-12-25 20:05:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:05:32,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:05:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:05:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:05:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:05:32,195 INFO L87 Difference]: Start difference. First operand 32754 states and 54539 transitions. Second operand has 7 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:05:40,922 INFO L93 Difference]: Finished difference Result 117106 states and 194982 transitions. [2023-12-25 20:05:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:05:40,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 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 3399 [2023-12-25 20:05:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:05:41,009 INFO L225 Difference]: With dead ends: 117106 [2023-12-25 20:05:41,009 INFO L226 Difference]: Without dead ends: 89644 [2023-12-25 20:05:41,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3404 GetRequests, 3393 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:05:41,044 INFO L413 NwaCegarLoop]: 19223 mSDtfsCounter, 19217 mSDsluCounter, 61228 mSDsCounter, 0 mSdLazyCounter, 16725 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19217 SdHoareTripleChecker+Valid, 80451 SdHoareTripleChecker+Invalid, 16728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:05:41,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19217 Valid, 80451 Invalid, 16728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 16725 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-25 20:05:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89644 states. [2023-12-25 20:05:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89644 to 34650. [2023-12-25 20:05:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34650 states, 34649 states have (on average 1.6647810903633582) internal successors, (57683), 34649 states have internal predecessors, (57683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34650 states to 34650 states and 57683 transitions. [2023-12-25 20:05:41,720 INFO L78 Accepts]: Start accepts. Automaton has 34650 states and 57683 transitions. Word has length 3399 [2023-12-25 20:05:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:05:41,721 INFO L495 AbstractCegarLoop]: Abstraction has 34650 states and 57683 transitions. [2023-12-25 20:05:41,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 34650 states and 57683 transitions. [2023-12-25 20:05:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3400 [2023-12-25 20:05:41,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:05:41,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:05:41,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-25 20:05:42,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:05:42,002 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:05:42,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:05:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash 998717297, now seen corresponding path program 1 times [2023-12-25 20:05:42,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:05:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566084163] [2023-12-25 20:05:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:42,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:05:42,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:05:42,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146985941] [2023-12-25 20:05:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:42,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:05:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:05:42,184 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:05:42,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 20:05:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:05:45,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 14125 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:05:45,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:05:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:05:47,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:05:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:05:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566084163] [2023-12-25 20:05:47,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:05:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146985941] [2023-12-25 20:05:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146985941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:05:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:05:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:05:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598013909] [2023-12-25 20:05:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:05:47,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:05:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:05:47,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:05:47,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:05:47,189 INFO L87 Difference]: Start difference. First operand 34650 states and 57683 transitions. Second operand has 7 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:05:54,211 INFO L93 Difference]: Finished difference Result 122320 states and 203628 transitions. [2023-12-25 20:05:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:05:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 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 3399 [2023-12-25 20:05:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:05:54,313 INFO L225 Difference]: With dead ends: 122320 [2023-12-25 20:05:54,313 INFO L226 Difference]: Without dead ends: 93436 [2023-12-25 20:05:54,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3404 GetRequests, 3393 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:05:54,354 INFO L413 NwaCegarLoop]: 19227 mSDtfsCounter, 18873 mSDsluCounter, 61234 mSDsCounter, 0 mSdLazyCounter, 16701 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18873 SdHoareTripleChecker+Valid, 80461 SdHoareTripleChecker+Invalid, 16704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-25 20:05:54,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18873 Valid, 80461 Invalid, 16704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 16701 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-25 20:05:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93436 states. [2023-12-25 20:05:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93436 to 34650. [2023-12-25 20:05:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34650 states, 34649 states have (on average 1.6647810903633582) internal successors, (57683), 34649 states have internal predecessors, (57683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34650 states to 34650 states and 57683 transitions. [2023-12-25 20:05:54,942 INFO L78 Accepts]: Start accepts. Automaton has 34650 states and 57683 transitions. Word has length 3399 [2023-12-25 20:05:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:05:54,943 INFO L495 AbstractCegarLoop]: Abstraction has 34650 states and 57683 transitions. [2023-12-25 20:05:54,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:05:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34650 states and 57683 transitions. [2023-12-25 20:05:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3400 [2023-12-25 20:05:55,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:05:55,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:05:55,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 20:05:55,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 20:05:55,221 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:05:55,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:05:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1491831437, now seen corresponding path program 1 times [2023-12-25 20:05:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:05:55,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307093069] [2023-12-25 20:05:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:05:55,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:05:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043717036] [2023-12-25 20:05:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:05:55,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:05:55,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:05:55,584 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:05:55,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 20:05:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:05:58,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 14126 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:05:58,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:06:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:06:00,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:06:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:06:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307093069] [2023-12-25 20:06:00,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:06:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043717036] [2023-12-25 20:06:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043717036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:06:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:06:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:06:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742064828] [2023-12-25 20:06:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:06:00,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:06:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:06:00,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:06:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:06:00,063 INFO L87 Difference]: Start difference. First operand 34650 states and 57683 transitions. Second operand has 6 states, 6 states have (on average 566.5) internal successors, (3399), 6 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:06:03,387 INFO L93 Difference]: Finished difference Result 76276 states and 126971 transitions. [2023-12-25 20:06:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:06:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 566.5) internal successors, (3399), 6 states have internal predecessors, (3399), 0 states have call successors, (0), 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 3399 [2023-12-25 20:06:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:06:03,429 INFO L225 Difference]: With dead ends: 76276 [2023-12-25 20:06:03,429 INFO L226 Difference]: Without dead ends: 47392 [2023-12-25 20:06:03,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3400 GetRequests, 3394 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 20:06:03,455 INFO L413 NwaCegarLoop]: 6648 mSDtfsCounter, 10525 mSDsluCounter, 19922 mSDsCounter, 0 mSdLazyCounter, 6691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10525 SdHoareTripleChecker+Valid, 26570 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:06:03,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10525 Valid, 26570 Invalid, 6692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6691 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 20:06:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47392 states. [2023-12-25 20:06:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47392 to 36072. [2023-12-25 20:06:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36072 states, 36071 states have (on average 1.664633639211555) internal successors, (60045), 36071 states have internal predecessors, (60045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36072 states to 36072 states and 60045 transitions. [2023-12-25 20:06:03,921 INFO L78 Accepts]: Start accepts. Automaton has 36072 states and 60045 transitions. Word has length 3399 [2023-12-25 20:06:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:06:03,922 INFO L495 AbstractCegarLoop]: Abstraction has 36072 states and 60045 transitions. [2023-12-25 20:06:03,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 566.5) internal successors, (3399), 6 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 36072 states and 60045 transitions. [2023-12-25 20:06:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3401 [2023-12-25 20:06:03,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:06:03,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:06:04,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-25 20:06:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:04,212 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:06:04,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:06:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1807638994, now seen corresponding path program 1 times [2023-12-25 20:06:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:06:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628882267] [2023-12-25 20:06:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:06:04,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:06:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819477382] [2023-12-25 20:06:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:04,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:04,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:06:04,517 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:06:04,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 20:06:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:06:07,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 14127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:06:07,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:06:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:06:09,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:06:09,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:06:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628882267] [2023-12-25 20:06:09,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:06:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819477382] [2023-12-25 20:06:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819477382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:06:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:06:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:06:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125044814] [2023-12-25 20:06:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:06:09,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:06:09,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:06:09,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:06:09,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:06:09,947 INFO L87 Difference]: Start difference. First operand 36072 states and 60045 transitions. Second operand has 7 states, 7 states have (on average 485.7142857142857) internal successors, (3400), 7 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:17,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:06:17,581 INFO L93 Difference]: Finished difference Result 126418 states and 210404 transitions. [2023-12-25 20:06:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:06:17,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.7142857142857) internal successors, (3400), 7 states have internal predecessors, (3400), 0 states have call successors, (0), 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 3400 [2023-12-25 20:06:17,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:06:17,649 INFO L225 Difference]: With dead ends: 126418 [2023-12-25 20:06:17,650 INFO L226 Difference]: Without dead ends: 96280 [2023-12-25 20:06:17,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3405 GetRequests, 3394 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:06:17,666 INFO L413 NwaCegarLoop]: 19031 mSDtfsCounter, 19717 mSDsluCounter, 60750 mSDsCounter, 0 mSdLazyCounter, 16415 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19717 SdHoareTripleChecker+Valid, 79781 SdHoareTripleChecker+Invalid, 16418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:06:17,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19717 Valid, 79781 Invalid, 16418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 16415 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 20:06:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96280 states. [2023-12-25 20:06:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96280 to 38640. [2023-12-25 20:06:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38640 states, 38639 states have (on average 1.663940578172313) internal successors, (64293), 38639 states have internal predecessors, (64293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38640 states to 38640 states and 64293 transitions. [2023-12-25 20:06:18,175 INFO L78 Accepts]: Start accepts. Automaton has 38640 states and 64293 transitions. Word has length 3400 [2023-12-25 20:06:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:06:18,176 INFO L495 AbstractCegarLoop]: Abstraction has 38640 states and 64293 transitions. [2023-12-25 20:06:18,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.7142857142857) internal successors, (3400), 7 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 38640 states and 64293 transitions. [2023-12-25 20:06:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3401 [2023-12-25 20:06:18,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:06:18,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:06:18,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-25 20:06:18,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-25 20:06:18,621 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:06:18,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:06:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash 952268116, now seen corresponding path program 1 times [2023-12-25 20:06:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:06:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137848153] [2023-12-25 20:06:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:06:18,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:06:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37891645] [2023-12-25 20:06:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:18,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:18,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:06:18,871 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:06:18,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 20:06:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:06:22,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 14128 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:06:22,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:06:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:06:23,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:06:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:06:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137848153] [2023-12-25 20:06:23,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:06:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37891645] [2023-12-25 20:06:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37891645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:06:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:06:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:06:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432713400] [2023-12-25 20:06:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:06:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:06:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:06:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:06:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:06:23,839 INFO L87 Difference]: Start difference. First operand 38640 states and 64293 transitions. Second operand has 7 states, 7 states have (on average 485.7142857142857) internal successors, (3400), 7 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:06:32,168 INFO L93 Difference]: Finished difference Result 129688 states and 215798 transitions. [2023-12-25 20:06:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:06:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.7142857142857) internal successors, (3400), 7 states have internal predecessors, (3400), 0 states have call successors, (0), 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 3400 [2023-12-25 20:06:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:06:32,248 INFO L225 Difference]: With dead ends: 129688 [2023-12-25 20:06:32,248 INFO L226 Difference]: Without dead ends: 97624 [2023-12-25 20:06:32,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3405 GetRequests, 3394 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:06:32,275 INFO L413 NwaCegarLoop]: 19035 mSDtfsCounter, 18952 mSDsluCounter, 60756 mSDsCounter, 0 mSdLazyCounter, 16391 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18952 SdHoareTripleChecker+Valid, 79791 SdHoareTripleChecker+Invalid, 16394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:06:32,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18952 Valid, 79791 Invalid, 16394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 16391 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-25 20:06:32,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97624 states. [2023-12-25 20:06:32,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97624 to 36744. [2023-12-25 20:06:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36744 states, 36743 states have (on average 1.6642353645592358) internal successors, (61149), 36743 states have internal predecessors, (61149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36744 states to 36744 states and 61149 transitions. [2023-12-25 20:06:32,776 INFO L78 Accepts]: Start accepts. Automaton has 36744 states and 61149 transitions. Word has length 3400 [2023-12-25 20:06:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:06:32,778 INFO L495 AbstractCegarLoop]: Abstraction has 36744 states and 61149 transitions. [2023-12-25 20:06:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.7142857142857) internal successors, (3400), 7 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 36744 states and 61149 transitions. [2023-12-25 20:06:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3401 [2023-12-25 20:06:33,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:06:33,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:06:33,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 20:06:33,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:33,239 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:06:33,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:06:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash 231957780, now seen corresponding path program 1 times [2023-12-25 20:06:33,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:06:33,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484574986] [2023-12-25 20:06:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:33,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:06:33,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:06:33,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939491274] [2023-12-25 20:06:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:33,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:06:33,508 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:06:33,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 20:06:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:06:36,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 14130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:06:36,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:06:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:06:38,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:06:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:06:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484574986] [2023-12-25 20:06:38,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:06:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939491274] [2023-12-25 20:06:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939491274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:06:38,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:06:38,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:06:38,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893281921] [2023-12-25 20:06:38,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:06:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:06:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:06:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:06:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:06:38,982 INFO L87 Difference]: Start difference. First operand 36744 states and 61149 transitions. Second operand has 6 states, 6 states have (on average 566.6666666666666) internal successors, (3400), 6 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:06:42,600 INFO L93 Difference]: Finished difference Result 79210 states and 131807 transitions. [2023-12-25 20:06:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:06:42,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 566.6666666666666) internal successors, (3400), 6 states have internal predecessors, (3400), 0 states have call successors, (0), 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 3400 [2023-12-25 20:06:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:06:42,640 INFO L225 Difference]: With dead ends: 79210 [2023-12-25 20:06:42,640 INFO L226 Difference]: Without dead ends: 48568 [2023-12-25 20:06:42,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3401 GetRequests, 3395 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 20:06:42,659 INFO L413 NwaCegarLoop]: 6648 mSDtfsCounter, 14037 mSDsluCounter, 19922 mSDsCounter, 0 mSdLazyCounter, 6691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14037 SdHoareTripleChecker+Valid, 26570 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:06:42,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14037 Valid, 26570 Invalid, 6692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6691 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 20:06:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48568 states. [2023-12-25 20:06:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48568 to 37248. [2023-12-25 20:06:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37248 states, 37247 states have (on average 1.6640534808172471) internal successors, (61981), 37247 states have internal predecessors, (61981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37248 states to 37248 states and 61981 transitions. [2023-12-25 20:06:43,081 INFO L78 Accepts]: Start accepts. Automaton has 37248 states and 61981 transitions. Word has length 3400 [2023-12-25 20:06:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:06:43,082 INFO L495 AbstractCegarLoop]: Abstraction has 37248 states and 61981 transitions. [2023-12-25 20:06:43,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 566.6666666666666) internal successors, (3400), 6 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 37248 states and 61981 transitions. [2023-12-25 20:06:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3402 [2023-12-25 20:06:43,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:06:43,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:06:43,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-25 20:06:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:43,351 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:06:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:06:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1965390021, now seen corresponding path program 1 times [2023-12-25 20:06:43,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:06:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823351052] [2023-12-25 20:06:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:06:43,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:06:43,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442537383] [2023-12-25 20:06:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:06:43,805 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:06:43,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 20:06:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:06:46,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 14130 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:06:46,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:06:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:06:48,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:06:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:06:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823351052] [2023-12-25 20:06:48,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:06:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442537383] [2023-12-25 20:06:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442537383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:06:48,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:06:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:06:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277973109] [2023-12-25 20:06:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:06:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:06:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:06:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:06:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:06:48,795 INFO L87 Difference]: Start difference. First operand 37248 states and 61981 transitions. Second operand has 7 states, 7 states have (on average 485.85714285714283) internal successors, (3401), 7 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:06:55,917 INFO L93 Difference]: Finished difference Result 129622 states and 215646 transitions. [2023-12-25 20:06:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:06:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.85714285714283) internal successors, (3401), 7 states have internal predecessors, (3401), 0 states have call successors, (0), 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 3401 [2023-12-25 20:06:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:06:56,020 INFO L225 Difference]: With dead ends: 129622 [2023-12-25 20:06:56,021 INFO L226 Difference]: Without dead ends: 98632 [2023-12-25 20:06:56,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3406 GetRequests, 3395 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:06:56,043 INFO L413 NwaCegarLoop]: 18851 mSDtfsCounter, 19369 mSDsluCounter, 60302 mSDsCounter, 0 mSdLazyCounter, 16133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19369 SdHoareTripleChecker+Valid, 79153 SdHoareTripleChecker+Invalid, 16136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-25 20:06:56,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19369 Valid, 79153 Invalid, 16136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 16133 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-25 20:06:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98632 states. [2023-12-25 20:06:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98632 to 40440. [2023-12-25 20:06:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40440 states, 40439 states have (on average 1.6630727762803235) internal successors, (67253), 40439 states have internal predecessors, (67253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40440 states to 40440 states and 67253 transitions. [2023-12-25 20:06:56,837 INFO L78 Accepts]: Start accepts. Automaton has 40440 states and 67253 transitions. Word has length 3401 [2023-12-25 20:06:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:06:56,838 INFO L495 AbstractCegarLoop]: Abstraction has 40440 states and 67253 transitions. [2023-12-25 20:06:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.85714285714283) internal successors, (3401), 7 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:06:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 40440 states and 67253 transitions. [2023-12-25 20:06:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3402 [2023-12-25 20:06:56,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:06:56,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:06:56,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-25 20:06:57,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:57,219 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:06:57,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:06:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1582883833, now seen corresponding path program 1 times [2023-12-25 20:06:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:06:57,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880912104] [2023-12-25 20:06:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:57,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:06:57,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:06:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539622885] [2023-12-25 20:06:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:06:57,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:06:57,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:06:57,396 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:06:57,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 20:07:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:07:00,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 14131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:07:00,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:07:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:07:02,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:07:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:07:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880912104] [2023-12-25 20:07:02,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:07:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539622885] [2023-12-25 20:07:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539622885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:07:02,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:07:02,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:07:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797722198] [2023-12-25 20:07:02,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:07:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:07:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:07:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:07:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:07:02,768 INFO L87 Difference]: Start difference. First operand 40440 states and 67253 transitions. Second operand has 7 states, 7 states have (on average 485.85714285714283) internal successors, (3401), 7 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:10,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:07:10,571 INFO L93 Difference]: Finished difference Result 133264 states and 221648 transitions. [2023-12-25 20:07:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:07:10,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 485.85714285714283) internal successors, (3401), 7 states have internal predecessors, (3401), 0 states have call successors, (0), 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 3401 [2023-12-25 20:07:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:07:10,664 INFO L225 Difference]: With dead ends: 133264 [2023-12-25 20:07:10,664 INFO L226 Difference]: Without dead ends: 99880 [2023-12-25 20:07:10,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3406 GetRequests, 3395 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:07:10,701 INFO L413 NwaCegarLoop]: 18855 mSDtfsCounter, 19417 mSDsluCounter, 60308 mSDsCounter, 0 mSdLazyCounter, 16109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19417 SdHoareTripleChecker+Valid, 79163 SdHoareTripleChecker+Invalid, 16112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-25 20:07:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19417 Valid, 79163 Invalid, 16112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 16109 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-25 20:07:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99880 states. [2023-12-25 20:07:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99880 to 37872. [2023-12-25 20:07:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37872 states, 37871 states have (on average 1.6636740513849648) internal successors, (63005), 37871 states have internal predecessors, (63005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37872 states to 37872 states and 63005 transitions. [2023-12-25 20:07:11,506 INFO L78 Accepts]: Start accepts. Automaton has 37872 states and 63005 transitions. Word has length 3401 [2023-12-25 20:07:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:07:11,510 INFO L495 AbstractCegarLoop]: Abstraction has 37872 states and 63005 transitions. [2023-12-25 20:07:11,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.85714285714283) internal successors, (3401), 7 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 37872 states and 63005 transitions. [2023-12-25 20:07:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3402 [2023-12-25 20:07:11,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:07:11,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:07:11,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 20:07:11,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-25 20:07:11,801 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:07:11,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:07:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2071775163, now seen corresponding path program 1 times [2023-12-25 20:07:11,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:07:11,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466242001] [2023-12-25 20:07:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:07:12,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:07:12,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780177698] [2023-12-25 20:07:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:12,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:07:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:07:12,021 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:07:12,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 20:07:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:07:15,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 14134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:07:15,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:07:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:07:17,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:07:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:07:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466242001] [2023-12-25 20:07:17,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:07:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780177698] [2023-12-25 20:07:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780177698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:07:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:07:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:07:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396528551] [2023-12-25 20:07:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:07:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:07:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:07:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:07:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:07:17,251 INFO L87 Difference]: Start difference. First operand 37872 states and 63005 transitions. Second operand has 6 states, 6 states have (on average 566.8333333333334) internal successors, (3401), 6 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:07:20,100 INFO L93 Difference]: Finished difference Result 81118 states and 134933 transitions. [2023-12-25 20:07:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:07:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 566.8333333333334) internal successors, (3401), 6 states have internal predecessors, (3401), 0 states have call successors, (0), 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 3401 [2023-12-25 20:07:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:07:20,146 INFO L225 Difference]: With dead ends: 81118 [2023-12-25 20:07:20,147 INFO L226 Difference]: Without dead ends: 49660 [2023-12-25 20:07:20,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3402 GetRequests, 3396 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 20:07:20,173 INFO L413 NwaCegarLoop]: 6648 mSDtfsCounter, 13931 mSDsluCounter, 19922 mSDsCounter, 0 mSdLazyCounter, 6691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13931 SdHoareTripleChecker+Valid, 26570 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-25 20:07:20,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13931 Valid, 26570 Invalid, 6692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6691 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-25 20:07:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49660 states. [2023-12-25 20:07:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49660 to 38340. [2023-12-25 20:07:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38340 states, 38339 states have (on average 1.6635019171079057) internal successors, (63777), 38339 states have internal predecessors, (63777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38340 states to 38340 states and 63777 transitions. [2023-12-25 20:07:20,607 INFO L78 Accepts]: Start accepts. Automaton has 38340 states and 63777 transitions. Word has length 3401 [2023-12-25 20:07:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:07:20,608 INFO L495 AbstractCegarLoop]: Abstraction has 38340 states and 63777 transitions. [2023-12-25 20:07:20,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 566.8333333333334) internal successors, (3401), 6 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 38340 states and 63777 transitions. [2023-12-25 20:07:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3403 [2023-12-25 20:07:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:07:20,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:07:20,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-25 20:07:20,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-25 20:07:20,897 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:07:20,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:07:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2107538994, now seen corresponding path program 1 times [2023-12-25 20:07:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:07:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136184450] [2023-12-25 20:07:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:07:21,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:07:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035912662] [2023-12-25 20:07:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:21,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:07:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:07:21,081 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:07:21,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-25 20:07:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:07:24,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 14133 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:07:24,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:07:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:07:28,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:07:28,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:07:28,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136184450] [2023-12-25 20:07:28,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:07:28,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035912662] [2023-12-25 20:07:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035912662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:07:28,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:07:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:07:28,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656146547] [2023-12-25 20:07:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:07:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:07:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:07:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:07:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:07:28,957 INFO L87 Difference]: Start difference. First operand 38340 states and 63777 transitions. Second operand has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:07:37,181 INFO L93 Difference]: Finished difference Result 130273 states and 216641 transitions. [2023-12-25 20:07:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:07:37,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 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 3402 [2023-12-25 20:07:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:07:37,282 INFO L225 Difference]: With dead ends: 130273 [2023-12-25 20:07:37,282 INFO L226 Difference]: Without dead ends: 100816 [2023-12-25 20:07:37,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3407 GetRequests, 3396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:07:37,320 INFO L413 NwaCegarLoop]: 14547 mSDtfsCounter, 22657 mSDsluCounter, 49544 mSDsCounter, 0 mSdLazyCounter, 14829 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22657 SdHoareTripleChecker+Valid, 64091 SdHoareTripleChecker+Invalid, 14832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-25 20:07:37,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22657 Valid, 64091 Invalid, 14832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14829 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-25 20:07:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100816 states. [2023-12-25 20:07:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100816 to 51739. [2023-12-25 20:07:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51739 states, 51738 states have (on average 1.662917004909351) internal successors, (86036), 51738 states have internal predecessors, (86036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51739 states to 51739 states and 86036 transitions. [2023-12-25 20:07:38,078 INFO L78 Accepts]: Start accepts. Automaton has 51739 states and 86036 transitions. Word has length 3402 [2023-12-25 20:07:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:07:38,080 INFO L495 AbstractCegarLoop]: Abstraction has 51739 states and 86036 transitions. [2023-12-25 20:07:38,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 51739 states and 86036 transitions. [2023-12-25 20:07:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3403 [2023-12-25 20:07:38,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:07:38,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:07:38,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-25 20:07:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:07:38,373 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:07:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:07:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash 514768080, now seen corresponding path program 1 times [2023-12-25 20:07:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:07:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470970342] [2023-12-25 20:07:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:07:38,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:07:38,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465501846] [2023-12-25 20:07:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:38,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:07:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:07:38,757 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:07:38,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-25 20:07:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:07:41,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 14134 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:07:41,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:07:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:07:46,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:07:46,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:07:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470970342] [2023-12-25 20:07:46,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:07:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465501846] [2023-12-25 20:07:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465501846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:07:46,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:07:46,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:07:46,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107455257] [2023-12-25 20:07:46,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:07:46,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:07:46,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:07:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:07:46,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:07:46,866 INFO L87 Difference]: Start difference. First operand 51739 states and 86036 transitions. Second operand has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:07:53,546 INFO L93 Difference]: Finished difference Result 160819 states and 267449 transitions. [2023-12-25 20:07:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:07:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 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 3402 [2023-12-25 20:07:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:07:53,880 INFO L225 Difference]: With dead ends: 160819 [2023-12-25 20:07:53,880 INFO L226 Difference]: Without dead ends: 121230 [2023-12-25 20:07:53,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3407 GetRequests, 3396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:07:53,912 INFO L413 NwaCegarLoop]: 14551 mSDtfsCounter, 22211 mSDsluCounter, 49550 mSDsCounter, 0 mSdLazyCounter, 14805 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22211 SdHoareTripleChecker+Valid, 64101 SdHoareTripleChecker+Invalid, 14808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:07:53,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22211 Valid, 64101 Invalid, 14808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14805 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-25 20:07:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121230 states. [2023-12-25 20:07:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121230 to 48547. [2023-12-25 20:07:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48547 states, 48546 states have (on average 1.6636592098216125) internal successors, (80764), 48546 states have internal predecessors, (80764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48547 states to 48547 states and 80764 transitions. [2023-12-25 20:07:54,798 INFO L78 Accepts]: Start accepts. Automaton has 48547 states and 80764 transitions. Word has length 3402 [2023-12-25 20:07:54,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:07:54,800 INFO L495 AbstractCegarLoop]: Abstraction has 48547 states and 80764 transitions. [2023-12-25 20:07:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:07:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 48547 states and 80764 transitions. [2023-12-25 20:07:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3403 [2023-12-25 20:07:54,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:07:54,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:07:55,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-25 20:07:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 20:07:55,225 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:07:55,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:07:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1509469874, now seen corresponding path program 1 times [2023-12-25 20:07:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:07:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680972031] [2023-12-25 20:07:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:07:55,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:07:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138977021] [2023-12-25 20:07:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:07:55,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:07:55,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:07:55,497 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:07:55,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-25 20:07:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:07:58,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 14137 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:07:58,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:08:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:08:02,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:08:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:08:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680972031] [2023-12-25 20:08:02,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:08:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138977021] [2023-12-25 20:08:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138977021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:08:02,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:08:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:08:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511046043] [2023-12-25 20:08:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:08:02,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:08:02,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:08:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:08:02,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:08:02,850 INFO L87 Difference]: Start difference. First operand 48547 states and 80764 transitions. Second operand has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:08:10,191 INFO L93 Difference]: Finished difference Result 152041 states and 252951 transitions. [2023-12-25 20:08:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:08:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 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 3402 [2023-12-25 20:08:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:08:10,357 INFO L225 Difference]: With dead ends: 152041 [2023-12-25 20:08:10,357 INFO L226 Difference]: Without dead ends: 114846 [2023-12-25 20:08:10,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3407 GetRequests, 3396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:08:10,398 INFO L413 NwaCegarLoop]: 14557 mSDtfsCounter, 19106 mSDsluCounter, 49559 mSDsCounter, 0 mSdLazyCounter, 14790 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19106 SdHoareTripleChecker+Valid, 64116 SdHoareTripleChecker+Invalid, 14793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-25 20:08:10,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19106 Valid, 64116 Invalid, 14793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14790 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-25 20:08:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114846 states. [2023-12-25 20:08:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114846 to 48547. [2023-12-25 20:08:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48547 states, 48546 states have (on average 1.6636592098216125) internal successors, (80764), 48546 states have internal predecessors, (80764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48547 states to 48547 states and 80764 transitions. [2023-12-25 20:08:11,136 INFO L78 Accepts]: Start accepts. Automaton has 48547 states and 80764 transitions. Word has length 3402 [2023-12-25 20:08:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:08:11,138 INFO L495 AbstractCegarLoop]: Abstraction has 48547 states and 80764 transitions. [2023-12-25 20:08:11,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 48547 states and 80764 transitions. [2023-12-25 20:08:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3403 [2023-12-25 20:08:11,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:08:11,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:08:11,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-25 20:08:11,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 20:08:11,537 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:08:11,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:08:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1086065104, now seen corresponding path program 1 times [2023-12-25 20:08:11,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:08:11,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147957366] [2023-12-25 20:08:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:08:11,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:08:11,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:08:11,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544890055] [2023-12-25 20:08:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:08:11,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:08:11,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:08:11,782 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:08:11,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-25 20:08:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:08:15,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 14138 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:08:15,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:08:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:08:19,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:08:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:08:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147957366] [2023-12-25 20:08:19,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:08:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544890055] [2023-12-25 20:08:19,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544890055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:08:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:08:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:08:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338227413] [2023-12-25 20:08:19,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:08:19,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:08:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:08:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:08:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:08:19,604 INFO L87 Difference]: Start difference. First operand 48547 states and 80764 transitions. Second operand has 6 states, 6 states have (on average 567.0) internal successors, (3402), 6 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:08:23,280 INFO L93 Difference]: Finished difference Result 104800 states and 174339 transitions. [2023-12-25 20:08:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:08:23,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 567.0) internal successors, (3402), 6 states have internal predecessors, (3402), 0 states have call successors, (0), 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 3402 [2023-12-25 20:08:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:08:23,381 INFO L225 Difference]: With dead ends: 104800 [2023-12-25 20:08:23,381 INFO L226 Difference]: Without dead ends: 67605 [2023-12-25 20:08:23,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3403 GetRequests, 3397 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 20:08:23,419 INFO L413 NwaCegarLoop]: 6648 mSDtfsCounter, 12051 mSDsluCounter, 19922 mSDsCounter, 0 mSdLazyCounter, 6691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12051 SdHoareTripleChecker+Valid, 26570 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:08:23,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12051 Valid, 26570 Invalid, 6692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6691 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 20:08:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67605 states. [2023-12-25 20:08:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67605 to 56289. [2023-12-25 20:08:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56289 states, 56288 states have (on average 1.663835986355884) internal successors, (93654), 56288 states have internal predecessors, (93654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56289 states to 56289 states and 93654 transitions. [2023-12-25 20:08:24,240 INFO L78 Accepts]: Start accepts. Automaton has 56289 states and 93654 transitions. Word has length 3402 [2023-12-25 20:08:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:08:24,241 INFO L495 AbstractCegarLoop]: Abstraction has 56289 states and 93654 transitions. [2023-12-25 20:08:24,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 567.0) internal successors, (3402), 6 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 56289 states and 93654 transitions. [2023-12-25 20:08:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-12-25 20:08:24,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:08:24,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:08:24,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-25 20:08:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-25 20:08:24,641 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:08:24,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:08:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash 654458295, now seen corresponding path program 1 times [2023-12-25 20:08:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:08:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343758166] [2023-12-25 20:08:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:08:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:08:24,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:08:24,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47394824] [2023-12-25 20:08:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:08:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:08:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:08:24,816 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:08:24,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-25 20:08:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:08:28,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 14136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:08:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:08:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:08:33,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:08:33,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:08:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343758166] [2023-12-25 20:08:33,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:08:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47394824] [2023-12-25 20:08:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47394824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:08:33,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:08:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:08:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156090860] [2023-12-25 20:08:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:08:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:08:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:08:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:08:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:08:33,216 INFO L87 Difference]: Start difference. First operand 56289 states and 93654 transitions. Second operand has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:08:40,040 INFO L93 Difference]: Finished difference Result 181651 states and 302157 transitions. [2023-12-25 20:08:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:08:40,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 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 3403 [2023-12-25 20:08:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:08:40,166 INFO L225 Difference]: With dead ends: 181651 [2023-12-25 20:08:40,166 INFO L226 Difference]: Without dead ends: 136714 [2023-12-25 20:08:40,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3397 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:08:40,217 INFO L413 NwaCegarLoop]: 14535 mSDtfsCounter, 22655 mSDsluCounter, 49516 mSDsCounter, 0 mSdLazyCounter, 14799 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22655 SdHoareTripleChecker+Valid, 64051 SdHoareTripleChecker+Invalid, 14802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 20:08:40,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22655 Valid, 64051 Invalid, 14802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14799 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 20:08:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136714 states. [2023-12-25 20:08:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136714 to 69700. [2023-12-25 20:08:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69700 states, 69699 states have (on average 1.6632806783454568) internal successors, (115929), 69699 states have internal predecessors, (115929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69700 states to 69700 states and 115929 transitions. [2023-12-25 20:08:41,602 INFO L78 Accepts]: Start accepts. Automaton has 69700 states and 115929 transitions. Word has length 3403 [2023-12-25 20:08:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:08:41,604 INFO L495 AbstractCegarLoop]: Abstraction has 69700 states and 115929 transitions. [2023-12-25 20:08:41,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69700 states and 115929 transitions. [2023-12-25 20:08:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-12-25 20:08:41,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:08:41,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:08:41,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-25 20:08:41,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:08:41,904 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:08:41,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:08:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 341598965, now seen corresponding path program 1 times [2023-12-25 20:08:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:08:41,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45287378] [2023-12-25 20:08:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:08:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:08:42,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:08:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377702507] [2023-12-25 20:08:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:08:42,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:08:42,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:08:42,158 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:08:42,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-25 20:08:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:08:45,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 14137 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:08:45,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:08:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:08:50,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:08:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:08:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45287378] [2023-12-25 20:08:50,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:08:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377702507] [2023-12-25 20:08:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377702507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:08:50,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:08:50,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:08:50,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143721204] [2023-12-25 20:08:50,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:08:50,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:08:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:08:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:08:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:08:50,140 INFO L87 Difference]: Start difference. First operand 69700 states and 115929 transitions. Second operand has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:08:58,332 INFO L93 Difference]: Finished difference Result 212233 states and 353013 transitions. [2023-12-25 20:08:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:08:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 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 3403 [2023-12-25 20:08:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:08:58,464 INFO L225 Difference]: With dead ends: 212233 [2023-12-25 20:08:58,464 INFO L226 Difference]: Without dead ends: 157152 [2023-12-25 20:08:58,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3397 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:08:58,736 INFO L413 NwaCegarLoop]: 14539 mSDtfsCounter, 22219 mSDsluCounter, 49522 mSDsCounter, 0 mSdLazyCounter, 14775 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22219 SdHoareTripleChecker+Valid, 64061 SdHoareTripleChecker+Invalid, 14778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-25 20:08:58,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22219 Valid, 64061 Invalid, 14778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14775 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-25 20:08:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157152 states. [2023-12-25 20:08:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157152 to 66508. [2023-12-25 20:08:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66508 states, 66507 states have (on average 1.6638398965522425) internal successors, (110657), 66507 states have internal predecessors, (110657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66508 states to 66508 states and 110657 transitions. [2023-12-25 20:08:59,691 INFO L78 Accepts]: Start accepts. Automaton has 66508 states and 110657 transitions. Word has length 3403 [2023-12-25 20:08:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:08:59,693 INFO L495 AbstractCegarLoop]: Abstraction has 66508 states and 110657 transitions. [2023-12-25 20:08:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:08:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 66508 states and 110657 transitions. [2023-12-25 20:08:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-12-25 20:08:59,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:08:59,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:08:59,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-25 20:09:00,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:09:00,101 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:09:00,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:09:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2014731831, now seen corresponding path program 1 times [2023-12-25 20:09:00,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:09:00,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167094291] [2023-12-25 20:09:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:09:00,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:09:00,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123237244] [2023-12-25 20:09:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:00,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:09:00,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:09:00,278 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:09:00,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-25 20:09:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:09:03,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 14140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:09:03,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:09:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:09:07,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:09:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:09:07,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167094291] [2023-12-25 20:09:07,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:09:07,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123237244] [2023-12-25 20:09:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123237244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:09:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:09:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:09:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823729542] [2023-12-25 20:09:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:09:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:09:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:09:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:09:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:09:07,632 INFO L87 Difference]: Start difference. First operand 66508 states and 110657 transitions. Second operand has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:09:13,871 INFO L93 Difference]: Finished difference Result 183041 states and 304541 transitions. [2023-12-25 20:09:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:09:13,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 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 3403 [2023-12-25 20:09:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:09:13,982 INFO L225 Difference]: With dead ends: 183041 [2023-12-25 20:09:13,982 INFO L226 Difference]: Without dead ends: 130354 [2023-12-25 20:09:14,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3397 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:09:14,031 INFO L413 NwaCegarLoop]: 14545 mSDtfsCounter, 19107 mSDsluCounter, 49531 mSDsCounter, 0 mSdLazyCounter, 14760 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19107 SdHoareTripleChecker+Valid, 64076 SdHoareTripleChecker+Invalid, 14763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-25 20:09:14,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19107 Valid, 64076 Invalid, 14763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14760 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-25 20:09:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130354 states. [2023-12-25 20:09:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130354 to 56301. [2023-12-25 20:09:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56301 states, 56300 states have (on average 1.663765541740675) internal successors, (93670), 56300 states have internal predecessors, (93670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56301 states to 56301 states and 93670 transitions. [2023-12-25 20:09:15,023 INFO L78 Accepts]: Start accepts. Automaton has 56301 states and 93670 transitions. Word has length 3403 [2023-12-25 20:09:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:09:15,026 INFO L495 AbstractCegarLoop]: Abstraction has 56301 states and 93670 transitions. [2023-12-25 20:09:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56301 states and 93670 transitions. [2023-12-25 20:09:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-12-25 20:09:15,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:09:15,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:09:15,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-25 20:09:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-25 20:09:15,417 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:09:15,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:09:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 871937525, now seen corresponding path program 1 times [2023-12-25 20:09:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:09:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106446757] [2023-12-25 20:09:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:09:15,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:09:15,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70210566] [2023-12-25 20:09:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:09:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:09:15,651 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:09:15,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-25 20:09:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:09:18,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 14141 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:09:18,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:09:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:09:21,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:09:21,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:09:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106446757] [2023-12-25 20:09:21,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:09:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70210566] [2023-12-25 20:09:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70210566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:09:21,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:09:21,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:09:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388815092] [2023-12-25 20:09:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:09:21,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:09:21,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:09:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:09:21,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:09:21,234 INFO L87 Difference]: Start difference. First operand 56301 states and 93670 transitions. Second operand has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:09:27,099 INFO L93 Difference]: Finished difference Result 154889 states and 257687 transitions. [2023-12-25 20:09:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:09:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 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 3403 [2023-12-25 20:09:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:09:27,192 INFO L225 Difference]: With dead ends: 154889 [2023-12-25 20:09:27,192 INFO L226 Difference]: Without dead ends: 109940 [2023-12-25 20:09:27,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3397 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:09:27,217 INFO L413 NwaCegarLoop]: 14547 mSDtfsCounter, 14435 mSDsluCounter, 49534 mSDsCounter, 0 mSdLazyCounter, 14741 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14435 SdHoareTripleChecker+Valid, 64081 SdHoareTripleChecker+Invalid, 14744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:09:27,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14435 Valid, 64081 Invalid, 14744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14741 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-25 20:09:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109940 states. [2023-12-25 20:09:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109940 to 56301. [2023-12-25 20:09:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56301 states, 56300 states have (on average 1.663765541740675) internal successors, (93670), 56300 states have internal predecessors, (93670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56301 states to 56301 states and 93670 transitions. [2023-12-25 20:09:28,015 INFO L78 Accepts]: Start accepts. Automaton has 56301 states and 93670 transitions. Word has length 3403 [2023-12-25 20:09:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:09:28,017 INFO L495 AbstractCegarLoop]: Abstraction has 56301 states and 93670 transitions. [2023-12-25 20:09:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 56301 states and 93670 transitions. [2023-12-25 20:09:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-12-25 20:09:28,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:09:28,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:09:28,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-25 20:09:28,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-25 20:09:28,304 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:09:28,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:09:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1178284279, now seen corresponding path program 1 times [2023-12-25 20:09:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:09:28,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876574551] [2023-12-25 20:09:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:09:28,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:09:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772006439] [2023-12-25 20:09:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:28,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:09:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:09:28,640 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:09:28,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-25 20:09:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:09:31,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 14142 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:09:31,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:09:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:09:36,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:09:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:09:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876574551] [2023-12-25 20:09:36,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:09:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772006439] [2023-12-25 20:09:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772006439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:09:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:09:36,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:09:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87860546] [2023-12-25 20:09:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:09:36,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:09:36,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:09:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:09:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:09:36,085 INFO L87 Difference]: Start difference. First operand 56301 states and 93670 transitions. Second operand has 6 states, 6 states have (on average 567.1666666666666) internal successors, (3403), 6 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:09:39,126 INFO L93 Difference]: Finished difference Result 112578 states and 187275 transitions. [2023-12-25 20:09:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:09:39,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 567.1666666666666) internal successors, (3403), 6 states have internal predecessors, (3403), 0 states have call successors, (0), 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 3403 [2023-12-25 20:09:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:09:39,197 INFO L225 Difference]: With dead ends: 112578 [2023-12-25 20:09:39,197 INFO L226 Difference]: Without dead ends: 67629 [2023-12-25 20:09:39,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3404 GetRequests, 3398 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 20:09:39,234 INFO L413 NwaCegarLoop]: 6648 mSDtfsCounter, 12039 mSDsluCounter, 19922 mSDsCounter, 0 mSdLazyCounter, 6691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12039 SdHoareTripleChecker+Valid, 26570 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:09:39,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12039 Valid, 26570 Invalid, 6692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6691 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 20:09:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67629 states. [2023-12-25 20:09:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67629 to 56313. [2023-12-25 20:09:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56313 states, 56312 states have (on average 1.6637306435573236) internal successors, (93688), 56312 states have internal predecessors, (93688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56313 states to 56313 states and 93688 transitions. [2023-12-25 20:09:39,868 INFO L78 Accepts]: Start accepts. Automaton has 56313 states and 93688 transitions. Word has length 3403 [2023-12-25 20:09:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:09:39,870 INFO L495 AbstractCegarLoop]: Abstraction has 56313 states and 93688 transitions. [2023-12-25 20:09:39,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 567.1666666666666) internal successors, (3403), 6 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 56313 states and 93688 transitions. [2023-12-25 20:09:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3405 [2023-12-25 20:09:39,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:09:39,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:09:40,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-25 20:09:40,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-25 20:09:40,166 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:09:40,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:09:40,166 INFO L85 PathProgramCache]: Analyzing trace with hash -26971334, now seen corresponding path program 1 times [2023-12-25 20:09:40,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:09:40,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492999070] [2023-12-25 20:09:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:40,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:09:40,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:09:40,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85392655] [2023-12-25 20:09:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:40,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:09:40,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:09:40,596 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:09:40,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-25 20:09:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:09:43,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 14139 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:09:43,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:09:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:09:46,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:09:46,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:09:46,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492999070] [2023-12-25 20:09:46,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:09:46,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85392655] [2023-12-25 20:09:46,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85392655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:09:46,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:09:46,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:09:46,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229908760] [2023-12-25 20:09:46,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:09:46,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:09:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:09:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:09:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:09:46,135 INFO L87 Difference]: Start difference. First operand 56313 states and 93688 transitions. Second operand has 7 states, 7 states have (on average 486.2857142857143) internal successors, (3404), 7 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:09:50,749 INFO L93 Difference]: Finished difference Result 161620 states and 268858 transitions. [2023-12-25 20:09:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 20:09:50,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.2857142857143) internal successors, (3404), 7 states have internal predecessors, (3404), 0 states have call successors, (0), 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 3404 [2023-12-25 20:09:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:09:50,860 INFO L225 Difference]: With dead ends: 161620 [2023-12-25 20:09:50,860 INFO L226 Difference]: Without dead ends: 107243 [2023-12-25 20:09:50,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3405 GetRequests, 3398 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 20:09:50,898 INFO L413 NwaCegarLoop]: 13481 mSDtfsCounter, 18071 mSDsluCounter, 33523 mSDsCounter, 0 mSdLazyCounter, 9413 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18071 SdHoareTripleChecker+Valid, 47004 SdHoareTripleChecker+Invalid, 9416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 20:09:50,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18071 Valid, 47004 Invalid, 9416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 9413 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 20:09:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107243 states. [2023-12-25 20:09:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107243 to 63607. [2023-12-25 20:09:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63607 states, 63606 states have (on average 1.6641511807062226) internal successors, (105850), 63606 states have internal predecessors, (105850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63607 states to 63607 states and 105850 transitions. [2023-12-25 20:09:51,912 INFO L78 Accepts]: Start accepts. Automaton has 63607 states and 105850 transitions. Word has length 3404 [2023-12-25 20:09:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:09:51,912 INFO L495 AbstractCegarLoop]: Abstraction has 63607 states and 105850 transitions. [2023-12-25 20:09:51,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.2857142857143) internal successors, (3404), 7 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:09:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 63607 states and 105850 transitions. [2023-12-25 20:09:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3406 [2023-12-25 20:09:51,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:09:51,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:09:52,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-25 20:09:52,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-25 20:09:52,204 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:09:52,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:09:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -800407108, now seen corresponding path program 1 times [2023-12-25 20:09:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:09:52,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273651848] [2023-12-25 20:09:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:09:52,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:09:52,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521923149] [2023-12-25 20:09:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:09:52,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:09:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:09:52,389 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:09:52,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-25 20:09:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:09:55,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 14142 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 20:09:55,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:09:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:09:57,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:09:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:09:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273651848] [2023-12-25 20:09:57,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:09:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521923149] [2023-12-25 20:09:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521923149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:09:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:09:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 20:09:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009799644] [2023-12-25 20:09:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:09:57,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 20:09:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:09:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 20:09:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:09:57,261 INFO L87 Difference]: Start difference. First operand 63607 states and 105850 transitions. Second operand has 11 states, 11 states have (on average 309.54545454545456) internal successors, (3405), 11 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:10:17,217 INFO L93 Difference]: Finished difference Result 198912 states and 331074 transitions. [2023-12-25 20:10:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 20:10:17,219 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 309.54545454545456) internal successors, (3405), 11 states have internal predecessors, (3405), 0 states have call successors, (0), 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 3405 [2023-12-25 20:10:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:10:17,458 INFO L225 Difference]: With dead ends: 198912 [2023-12-25 20:10:17,458 INFO L226 Difference]: Without dead ends: 142956 [2023-12-25 20:10:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3419 GetRequests, 3397 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-12-25 20:10:17,488 INFO L413 NwaCegarLoop]: 28739 mSDtfsCounter, 35439 mSDsluCounter, 193880 mSDsCounter, 0 mSdLazyCounter, 47416 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35439 SdHoareTripleChecker+Valid, 222619 SdHoareTripleChecker+Invalid, 47451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 47416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:10:17,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35439 Valid, 222619 Invalid, 47451 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [35 Valid, 47416 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2023-12-25 20:10:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142956 states. [2023-12-25 20:10:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142956 to 63637. [2023-12-25 20:10:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63637 states, 63636 states have (on average 1.6638852222012697) internal successors, (105883), 63636 states have internal predecessors, (105883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63637 states to 63637 states and 105883 transitions. [2023-12-25 20:10:18,252 INFO L78 Accepts]: Start accepts. Automaton has 63637 states and 105883 transitions. Word has length 3405 [2023-12-25 20:10:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:10:18,253 INFO L495 AbstractCegarLoop]: Abstraction has 63637 states and 105883 transitions. [2023-12-25 20:10:18,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 309.54545454545456) internal successors, (3405), 11 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:18,254 INFO L276 IsEmpty]: Start isEmpty. Operand 63637 states and 105883 transitions. [2023-12-25 20:10:18,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3406 [2023-12-25 20:10:18,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:10:18,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:10:18,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-25 20:10:18,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:10:18,825 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:10:18,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:10:18,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1909111746, now seen corresponding path program 1 times [2023-12-25 20:10:18,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:10:18,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403961876] [2023-12-25 20:10:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:10:18,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:10:19,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:10:19,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962483061] [2023-12-25 20:10:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:10:19,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:10:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:10:19,116 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:10:19,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-25 20:10:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:10:22,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 14143 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-25 20:10:22,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:10:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:10:29,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:10:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:10:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403961876] [2023-12-25 20:10:29,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:10:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962483061] [2023-12-25 20:10:29,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962483061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:10:29,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:10:29,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 20:10:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850681103] [2023-12-25 20:10:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:10:29,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 20:10:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:10:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 20:10:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:10:29,435 INFO L87 Difference]: Start difference. First operand 63637 states and 105883 transitions. Second operand has 11 states, 11 states have (on average 309.54545454545456) internal successors, (3405), 10 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:10:38,471 INFO L93 Difference]: Finished difference Result 168709 states and 280716 transitions. [2023-12-25 20:10:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 20:10:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 309.54545454545456) internal successors, (3405), 10 states have internal predecessors, (3405), 0 states have call successors, (0), 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 3405 [2023-12-25 20:10:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:10:38,572 INFO L225 Difference]: With dead ends: 168709 [2023-12-25 20:10:38,572 INFO L226 Difference]: Without dead ends: 116430 [2023-12-25 20:10:38,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3412 GetRequests, 3395 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-25 20:10:38,607 INFO L413 NwaCegarLoop]: 13578 mSDtfsCounter, 30590 mSDsluCounter, 92806 mSDsCounter, 0 mSdLazyCounter, 24345 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30590 SdHoareTripleChecker+Valid, 106384 SdHoareTripleChecker+Invalid, 24426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 24345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:10:38,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30590 Valid, 106384 Invalid, 24426 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [81 Valid, 24345 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-25 20:10:38,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116430 states. [2023-12-25 20:10:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116430 to 63994. [2023-12-25 20:10:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63994 states, 63993 states have (on average 1.6637757254699732) internal successors, (106470), 63993 states have internal predecessors, (106470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63994 states to 63994 states and 106470 transitions. [2023-12-25 20:10:39,492 INFO L78 Accepts]: Start accepts. Automaton has 63994 states and 106470 transitions. Word has length 3405 [2023-12-25 20:10:39,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:10:39,494 INFO L495 AbstractCegarLoop]: Abstraction has 63994 states and 106470 transitions. [2023-12-25 20:10:39,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 309.54545454545456) internal successors, (3405), 10 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 63994 states and 106470 transitions. [2023-12-25 20:10:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3406 [2023-12-25 20:10:39,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:10:39,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:10:39,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-25 20:10:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-25 20:10:39,786 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:10:39,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:10:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash -245595522, now seen corresponding path program 1 times [2023-12-25 20:10:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:10:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072638897] [2023-12-25 20:10:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:10:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:10:39,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:10:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508222986] [2023-12-25 20:10:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:10:39,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:10:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:10:39,954 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:10:39,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-25 20:10:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:10:43,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 14149 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 20:10:43,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:10:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:10:52,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:10:52,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:10:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072638897] [2023-12-25 20:10:52,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:10:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508222986] [2023-12-25 20:10:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508222986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:10:52,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:10:52,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:10:52,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836915242] [2023-12-25 20:10:52,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:10:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:10:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:10:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:10:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:10:52,198 INFO L87 Difference]: Start difference. First operand 63994 states and 106470 transitions. Second operand has 7 states, 7 states have (on average 486.42857142857144) internal successors, (3405), 6 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:10:54,686 INFO L93 Difference]: Finished difference Result 123976 states and 206232 transitions. [2023-12-25 20:10:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:10:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.42857142857144) internal successors, (3405), 6 states have internal predecessors, (3405), 0 states have call successors, (0), 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 3405 [2023-12-25 20:10:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:10:54,745 INFO L225 Difference]: With dead ends: 123976 [2023-12-25 20:10:54,745 INFO L226 Difference]: Without dead ends: 64590 [2023-12-25 20:10:54,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3399 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:10:54,780 INFO L413 NwaCegarLoop]: 7037 mSDtfsCounter, 29220 mSDsluCounter, 21786 mSDsCounter, 0 mSdLazyCounter, 5315 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29220 SdHoareTripleChecker+Valid, 28823 SdHoareTripleChecker+Invalid, 5395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:10:54,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29220 Valid, 28823 Invalid, 5395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 5315 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 20:10:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64590 states. [2023-12-25 20:10:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64590 to 63994. [2023-12-25 20:10:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63994 states, 63993 states have (on average 1.663713218633288) internal successors, (106466), 63993 states have internal predecessors, (106466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63994 states to 63994 states and 106466 transitions. [2023-12-25 20:10:55,486 INFO L78 Accepts]: Start accepts. Automaton has 63994 states and 106466 transitions. Word has length 3405 [2023-12-25 20:10:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:10:55,487 INFO L495 AbstractCegarLoop]: Abstraction has 63994 states and 106466 transitions. [2023-12-25 20:10:55,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.42857142857144) internal successors, (3405), 6 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:10:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 63994 states and 106466 transitions. [2023-12-25 20:10:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3407 [2023-12-25 20:10:55,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:10:55,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:10:55,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-25 20:10:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-25 20:10:55,777 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:10:55,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:10:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 706175893, now seen corresponding path program 1 times [2023-12-25 20:10:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:10:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829023475] [2023-12-25 20:10:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:10:55,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:10:56,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:10:56,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924486754] [2023-12-25 20:10:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:10:56,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:10:56,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:10:56,275 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:10:56,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-25 20:10:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:11:00,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 14152 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 20:11:00,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:11:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:11:01,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:11:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:11:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829023475] [2023-12-25 20:11:01,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:11:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924486754] [2023-12-25 20:11:01,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924486754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:11:01,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:11:01,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:11:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169076881] [2023-12-25 20:11:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:11:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:11:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:11:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:11:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:11:01,490 INFO L87 Difference]: Start difference. First operand 63994 states and 106466 transitions. Second operand has 7 states, 7 states have (on average 486.57142857142856) internal successors, (3406), 7 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:11:09,409 INFO L93 Difference]: Finished difference Result 250586 states and 416791 transitions. [2023-12-25 20:11:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:11:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.57142857142856) internal successors, (3406), 7 states have internal predecessors, (3406), 0 states have call successors, (0), 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 3406 [2023-12-25 20:11:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:11:09,587 INFO L225 Difference]: With dead ends: 250586 [2023-12-25 20:11:09,588 INFO L226 Difference]: Without dead ends: 191060 [2023-12-25 20:11:09,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3411 GetRequests, 3400 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:11:09,658 INFO L413 NwaCegarLoop]: 19903 mSDtfsCounter, 18863 mSDsluCounter, 62936 mSDsCounter, 0 mSdLazyCounter, 17648 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18863 SdHoareTripleChecker+Valid, 82839 SdHoareTripleChecker+Invalid, 17651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:11:09,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18863 Valid, 82839 Invalid, 17651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 17648 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 20:11:09,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191060 states. [2023-12-25 20:11:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191060 to 64300. [2023-12-25 20:11:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64300 states, 64299 states have (on average 1.663291808581782) internal successors, (106948), 64299 states have internal predecessors, (106948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64300 states to 64300 states and 106948 transitions. [2023-12-25 20:11:10,797 INFO L78 Accepts]: Start accepts. Automaton has 64300 states and 106948 transitions. Word has length 3406 [2023-12-25 20:11:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:11:10,798 INFO L495 AbstractCegarLoop]: Abstraction has 64300 states and 106948 transitions. [2023-12-25 20:11:10,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.57142857142856) internal successors, (3406), 7 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 64300 states and 106948 transitions. [2023-12-25 20:11:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3408 [2023-12-25 20:11:10,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:11:10,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:11:11,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-25 20:11:11,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-25 20:11:11,172 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:11:11,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:11:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 572939386, now seen corresponding path program 1 times [2023-12-25 20:11:11,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:11:11,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802287793] [2023-12-25 20:11:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:11:11,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:11:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500802215] [2023-12-25 20:11:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:11,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:11:11,341 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:11:11,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-25 20:11:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:11:14,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 14155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:11:14,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:11:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:11:15,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:11:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:11:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802287793] [2023-12-25 20:11:15,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:11:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500802215] [2023-12-25 20:11:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500802215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:11:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:11:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:11:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958685836] [2023-12-25 20:11:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:11:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:11:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:11:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:11:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:11:15,954 INFO L87 Difference]: Start difference. First operand 64300 states and 106948 transitions. Second operand has 7 states, 7 states have (on average 486.7142857142857) internal successors, (3407), 7 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:11:24,765 INFO L93 Difference]: Finished difference Result 264894 states and 440479 transitions. [2023-12-25 20:11:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:11:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.7142857142857) internal successors, (3407), 7 states have internal predecessors, (3407), 0 states have call successors, (0), 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 3407 [2023-12-25 20:11:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:11:24,978 INFO L225 Difference]: With dead ends: 264894 [2023-12-25 20:11:24,979 INFO L226 Difference]: Without dead ends: 205274 [2023-12-25 20:11:25,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3412 GetRequests, 3401 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:11:25,052 INFO L413 NwaCegarLoop]: 19869 mSDtfsCounter, 18777 mSDsluCounter, 62851 mSDsCounter, 0 mSdLazyCounter, 17634 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18777 SdHoareTripleChecker+Valid, 82720 SdHoareTripleChecker+Invalid, 17637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:11:25,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18777 Valid, 82720 Invalid, 17637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 17634 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-25 20:11:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205274 states. [2023-12-25 20:11:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205274 to 64690. [2023-12-25 20:11:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64690 states, 64689 states have (on average 1.6624464746711187) internal successors, (107542), 64689 states have internal predecessors, (107542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64690 states to 64690 states and 107542 transitions. [2023-12-25 20:11:26,572 INFO L78 Accepts]: Start accepts. Automaton has 64690 states and 107542 transitions. Word has length 3407 [2023-12-25 20:11:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:11:26,573 INFO L495 AbstractCegarLoop]: Abstraction has 64690 states and 107542 transitions. [2023-12-25 20:11:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.7142857142857) internal successors, (3407), 7 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 64690 states and 107542 transitions. [2023-12-25 20:11:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3408 [2023-12-25 20:11:26,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:11:26,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:11:26,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-12-25 20:11:26,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:26,950 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:11:26,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:11:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1479069384, now seen corresponding path program 1 times [2023-12-25 20:11:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:11:26,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845604350] [2023-12-25 20:11:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:11:27,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:11:27,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414019767] [2023-12-25 20:11:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:27,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:11:27,137 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:11:27,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-25 20:11:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:11:30,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 14156 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:11:30,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:11:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:11:31,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:11:31,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:11:31,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845604350] [2023-12-25 20:11:31,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:11:31,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414019767] [2023-12-25 20:11:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414019767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:11:31,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:11:31,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:11:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244327242] [2023-12-25 20:11:31,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:11:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:11:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:11:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:11:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:11:31,735 INFO L87 Difference]: Start difference. First operand 64690 states and 107542 transitions. Second operand has 7 states, 7 states have (on average 486.7142857142857) internal successors, (3407), 7 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:11:40,165 INFO L93 Difference]: Finished difference Result 267564 states and 444653 transitions. [2023-12-25 20:11:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:11:40,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.7142857142857) internal successors, (3407), 7 states have internal predecessors, (3407), 0 states have call successors, (0), 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 3407 [2023-12-25 20:11:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:11:40,376 INFO L225 Difference]: With dead ends: 267564 [2023-12-25 20:11:40,376 INFO L226 Difference]: Without dead ends: 207626 [2023-12-25 20:11:40,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3412 GetRequests, 3401 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:11:40,447 INFO L413 NwaCegarLoop]: 19867 mSDtfsCounter, 18873 mSDsluCounter, 62848 mSDsCounter, 0 mSdLazyCounter, 17646 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18873 SdHoareTripleChecker+Valid, 82715 SdHoareTripleChecker+Invalid, 17649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-25 20:11:40,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18873 Valid, 82715 Invalid, 17649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 17646 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-25 20:11:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207626 states. [2023-12-25 20:11:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207626 to 65086. [2023-12-25 20:11:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65086 states, 65085 states have (on average 1.6624106937082277) internal successors, (108198), 65085 states have internal predecessors, (108198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65086 states to 65086 states and 108198 transitions. [2023-12-25 20:11:41,804 INFO L78 Accepts]: Start accepts. Automaton has 65086 states and 108198 transitions. Word has length 3407 [2023-12-25 20:11:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:11:41,926 INFO L495 AbstractCegarLoop]: Abstraction has 65086 states and 108198 transitions. [2023-12-25 20:11:41,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.7142857142857) internal successors, (3407), 7 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 65086 states and 108198 transitions. [2023-12-25 20:11:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3408 [2023-12-25 20:11:41,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:11:41,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:11:42,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-25 20:11:42,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:42,215 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:11:42,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:11:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash 767197498, now seen corresponding path program 1 times [2023-12-25 20:11:42,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:11:42,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460189049] [2023-12-25 20:11:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:42,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:11:42,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:11:42,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612338005] [2023-12-25 20:11:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:42,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:11:42,519 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:11:42,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-25 20:11:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:11:45,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 14157 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 20:11:45,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:11:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:11:46,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:11:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:11:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460189049] [2023-12-25 20:11:46,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:11:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612338005] [2023-12-25 20:11:46,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612338005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:11:46,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:11:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 20:11:46,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562853467] [2023-12-25 20:11:46,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:11:46,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:11:46,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:11:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:11:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 20:11:46,933 INFO L87 Difference]: Start difference. First operand 65086 states and 108198 transitions. Second operand has 6 states, 6 states have (on average 567.8333333333334) internal successors, (3407), 6 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:11:50,695 INFO L93 Difference]: Finished difference Result 157926 states and 262512 transitions. [2023-12-25 20:11:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 20:11:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 567.8333333333334) internal successors, (3407), 6 states have internal predecessors, (3407), 0 states have call successors, (0), 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 3407 [2023-12-25 20:11:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:11:50,780 INFO L225 Difference]: With dead ends: 157926 [2023-12-25 20:11:50,781 INFO L226 Difference]: Without dead ends: 97664 [2023-12-25 20:11:50,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3402 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 20:11:50,792 INFO L413 NwaCegarLoop]: 6651 mSDtfsCounter, 14520 mSDsluCounter, 19931 mSDsCounter, 0 mSdLazyCounter, 6700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14520 SdHoareTripleChecker+Valid, 26582 SdHoareTripleChecker+Invalid, 6701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:11:50,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14520 Valid, 26582 Invalid, 6701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6700 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 20:11:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97664 states. [2023-12-25 20:11:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97664 to 65386. [2023-12-25 20:11:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65386 states, 65385 states have (on average 1.661879636002141) internal successors, (108662), 65385 states have internal predecessors, (108662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65386 states to 65386 states and 108662 transitions. [2023-12-25 20:11:51,572 INFO L78 Accepts]: Start accepts. Automaton has 65386 states and 108662 transitions. Word has length 3407 [2023-12-25 20:11:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:11:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 65386 states and 108662 transitions. [2023-12-25 20:11:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 567.8333333333334) internal successors, (3407), 6 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:11:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 65386 states and 108662 transitions. [2023-12-25 20:11:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3409 [2023-12-25 20:11:51,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:11:51,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:11:51,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-25 20:11:52,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:52,033 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:11:52,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:11:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1141055533, now seen corresponding path program 1 times [2023-12-25 20:11:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:11:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508446461] [2023-12-25 20:11:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:11:52,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:11:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745417687] [2023-12-25 20:11:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:11:52,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:11:52,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:11:52,379 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:11:52,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-25 20:11:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:11:55,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 14158 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:11:55,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:12:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:12:00,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:12:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:12:00,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508446461] [2023-12-25 20:12:00,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:12:00,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745417687] [2023-12-25 20:12:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745417687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:12:00,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:12:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:12:00,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746397736] [2023-12-25 20:12:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:12:00,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:12:00,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:12:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:12:00,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:12:00,048 INFO L87 Difference]: Start difference. First operand 65386 states and 108662 transitions. Second operand has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:12:08,183 INFO L93 Difference]: Finished difference Result 261234 states and 434063 transitions. [2023-12-25 20:12:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:12:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 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 3408 [2023-12-25 20:12:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:12:08,394 INFO L225 Difference]: With dead ends: 261234 [2023-12-25 20:12:08,394 INFO L226 Difference]: Without dead ends: 207446 [2023-12-25 20:12:08,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3413 GetRequests, 3402 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:12:08,460 INFO L413 NwaCegarLoop]: 14917 mSDtfsCounter, 22198 mSDsluCounter, 50473 mSDsCounter, 0 mSdLazyCounter, 14986 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22198 SdHoareTripleChecker+Valid, 65390 SdHoareTripleChecker+Invalid, 14989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:12:08,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22198 Valid, 65390 Invalid, 14989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14986 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-25 20:12:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207446 states. [2023-12-25 20:12:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207446 to 102856. [2023-12-25 20:12:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102856 states, 102855 states have (on average 1.6614651694132516) internal successors, (170890), 102855 states have internal predecessors, (170890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102856 states to 102856 states and 170890 transitions. [2023-12-25 20:12:10,310 INFO L78 Accepts]: Start accepts. Automaton has 102856 states and 170890 transitions. Word has length 3408 [2023-12-25 20:12:10,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:12:10,312 INFO L495 AbstractCegarLoop]: Abstraction has 102856 states and 170890 transitions. [2023-12-25 20:12:10,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 102856 states and 170890 transitions. [2023-12-25 20:12:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3409 [2023-12-25 20:12:10,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:12:10,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:12:10,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-25 20:12:10,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-12-25 20:12:10,588 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:12:10,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:12:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1953293103, now seen corresponding path program 1 times [2023-12-25 20:12:10,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:12:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624527853] [2023-12-25 20:12:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:12:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:12:10,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:12:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777573646] [2023-12-25 20:12:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:12:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:12:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:12:10,898 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:12:10,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-25 20:12:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:12:14,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 14159 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 20:12:14,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:12:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:12:18,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:12:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:12:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624527853] [2023-12-25 20:12:18,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:12:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777573646] [2023-12-25 20:12:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777573646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:12:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:12:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:12:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993659337] [2023-12-25 20:12:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:12:18,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:12:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:12:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:12:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:12:18,929 INFO L87 Difference]: Start difference. First operand 102856 states and 170890 transitions. Second operand has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:12:26,724 INFO L93 Difference]: Finished difference Result 440958 states and 732661 transitions. [2023-12-25 20:12:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:12:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 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 3408 [2023-12-25 20:12:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:12:27,253 INFO L225 Difference]: With dead ends: 440958 [2023-12-25 20:12:27,253 INFO L226 Difference]: Without dead ends: 356546 [2023-12-25 20:12:27,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3413 GetRequests, 3402 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:12:27,286 INFO L413 NwaCegarLoop]: 14915 mSDtfsCounter, 20535 mSDsluCounter, 50470 mSDsCounter, 0 mSdLazyCounter, 14998 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20535 SdHoareTripleChecker+Valid, 65385 SdHoareTripleChecker+Invalid, 15001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:12:27,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20535 Valid, 65385 Invalid, 15001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14998 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 20:12:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356546 states. [2023-12-25 20:12:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356546 to 102466. [2023-12-25 20:12:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102466 states, 102465 states have (on average 1.6619918996730592) internal successors, (170296), 102465 states have internal predecessors, (170296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102466 states to 102466 states and 170296 transitions. [2023-12-25 20:12:29,406 INFO L78 Accepts]: Start accepts. Automaton has 102466 states and 170296 transitions. Word has length 3408 [2023-12-25 20:12:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:12:29,408 INFO L495 AbstractCegarLoop]: Abstraction has 102466 states and 170296 transitions. [2023-12-25 20:12:29,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:29,408 INFO L276 IsEmpty]: Start isEmpty. Operand 102466 states and 170296 transitions. [2023-12-25 20:12:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3409 [2023-12-25 20:12:29,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:12:29,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:12:29,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-12-25 20:12:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-25 20:12:29,704 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:12:29,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:12:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1426877587, now seen corresponding path program 1 times [2023-12-25 20:12:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:12:29,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167206227] [2023-12-25 20:12:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:12:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:12:29,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:12:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106798507] [2023-12-25 20:12:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:12:29,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:12:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:12:29,995 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:12:29,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-25 20:12:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:12:33,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 14160 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:12:33,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:12:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:12:37,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:12:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:12:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167206227] [2023-12-25 20:12:37,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:12:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106798507] [2023-12-25 20:12:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106798507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:12:37,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:12:37,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 20:12:37,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929114872] [2023-12-25 20:12:37,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:12:37,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 20:12:37,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:12:37,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 20:12:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 20:12:37,635 INFO L87 Difference]: Start difference. First operand 102466 states and 170296 transitions. Second operand has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:12:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:12:44,497 INFO L93 Difference]: Finished difference Result 364920 states and 606531 transitions. [2023-12-25 20:12:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 20:12:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 486.85714285714283) internal successors, (3408), 7 states have internal predecessors, (3408), 0 states have call successors, (0), 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 3408 [2023-12-25 20:12:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:12:44,773 INFO L225 Difference]: With dead ends: 364920 [2023-12-25 20:12:44,773 INFO L226 Difference]: Without dead ends: 280826 [2023-12-25 20:12:44,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3413 GetRequests, 3402 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 20:12:44,862 INFO L413 NwaCegarLoop]: 14919 mSDtfsCounter, 20421 mSDsluCounter, 50476 mSDsCounter, 0 mSdLazyCounter, 14974 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20421 SdHoareTripleChecker+Valid, 65395 SdHoareTripleChecker+Invalid, 14977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-25 20:12:44,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20421 Valid, 65395 Invalid, 14977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14974 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-25 20:12:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280826 states.