/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-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:04:42,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:04:42,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:04:42,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:04:42,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:04:42,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:04:42,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:04:42,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:04:42,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:04:42,404 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:04:42,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:04:42,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:04:42,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:04:42,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:04:42,406 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:04:42,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:04:42,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:04:42,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:04:42,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:04:42,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:04:42,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:04:42,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:04:42,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:04:42,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:04:42,409 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:04:42,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:04:42,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:04:42,410 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:04:42,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:04:42,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:04:42,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:04:42,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:04:42,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:04:42,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:04:42,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:04:42,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:04:42,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:04:42,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:04:42,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:04:42,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:04:42,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:04:42,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:04:42,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:04:42,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:04:42,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:04:42,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:04:42,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:04:42,693 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:04:42,696 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:04:42,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2023-12-15 20:04:43,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:04:44,066 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:04:44,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2023-12-15 20:04:44,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3b8fe80/855038e780da445395961a0e2714858a/FLAG3cb121c71 [2023-12-15 20:04:44,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3b8fe80/855038e780da445395961a0e2714858a [2023-12-15 20:04:44,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:04:44,093 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:04:44,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:04:44,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:04:44,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:04:44,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcc179b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44, skipping insertion in model container [2023-12-15 20:04:44,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:04:44,242 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i[915,928] [2023-12-15 20:04:44,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:04:44,326 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:04:44,334 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i[915,928] [2023-12-15 20:04:44,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:04:44,396 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:04:44,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44 WrapperNode [2023-12-15 20:04:44,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:04:44,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:04:44,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:04:44,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:04:44,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,467 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2023-12-15 20:04:44,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:04:44,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:04:44,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:04:44,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:04:44,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,520 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]. [2023-12-15 20:04:44,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:04:44,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:04:44,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:04:44,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:04:44,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (1/1) ... [2023-12-15 20:04:44,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:04:44,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:44,603 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) [2023-12-15 20:04:44,614 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 [2023-12-15 20:04:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:04:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:04:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:04:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:04:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:04:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:04:44,749 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:04:44,753 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:04:45,160 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:04:45,184 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:04:45,184 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:04:45,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:04:45 BoogieIcfgContainer [2023-12-15 20:04:45,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:04:45,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:04:45,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:04:45,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:04:45,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:04:44" (1/3) ... [2023-12-15 20:04:45,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bdfae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:04:45, skipping insertion in model container [2023-12-15 20:04:45,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:04:44" (2/3) ... [2023-12-15 20:04:45,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bdfae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:04:45, skipping insertion in model container [2023-12-15 20:04:45,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:04:45" (3/3) ... [2023-12-15 20:04:45,192 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2023-12-15 20:04:45,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:04:45,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:04:45,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:04:45,281 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;@7d023429, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:04:45,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:04:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 20:04:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-15 20:04:45,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:45,302 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:45,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:45,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1796924827, now seen corresponding path program 1 times [2023-12-15 20:04:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657249872] [2023-12-15 20:04:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:45,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:45,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657249872] [2023-12-15 20:04:45,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:04:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229218729] [2023-12-15 20:04:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:45,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:45,540 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) [2023-12-15 20:04:45,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:04:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:45,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:04:45,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-15 20:04:45,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:04:45,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229218729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:04:45,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:04:45,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:04:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814211264] [2023-12-15 20:04:45,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:04:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:04:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:04:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:04:45,891 INFO L87 Difference]: Start difference. First operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-15 20:04:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:45,952 INFO L93 Difference]: Finished difference Result 201 states and 367 transitions. [2023-12-15 20:04:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:04:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 208 [2023-12-15 20:04:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:45,963 INFO L225 Difference]: With dead ends: 201 [2023-12-15 20:04:45,963 INFO L226 Difference]: Without dead ends: 100 [2023-12-15 20:04:45,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:04:45,973 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:45,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:04:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-15 20:04:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-15 20:04:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 20:04:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 163 transitions. [2023-12-15 20:04:46,031 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 163 transitions. Word has length 208 [2023-12-15 20:04:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:46,032 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 163 transitions. [2023-12-15 20:04:46,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-15 20:04:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 163 transitions. [2023-12-15 20:04:46,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-15 20:04:46,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:46,044 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:46,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:46,251 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,SelfDestructingSolverStorable0 [2023-12-15 20:04:46,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:46,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1560672353, now seen corresponding path program 1 times [2023-12-15 20:04:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596586302] [2023-12-15 20:04:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:46,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:46,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116125343] [2023-12-15 20:04:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:46,336 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) [2023-12-15 20:04:46,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:04:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:46,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:04:46,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:04:46,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:04:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596586302] [2023-12-15 20:04:46,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:04:46,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116125343] [2023-12-15 20:04:46,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116125343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:04:46,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:04:46,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:04:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950798793] [2023-12-15 20:04:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:04:46,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:04:46,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:04:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:04:46,790 INFO L87 Difference]: Start difference. First operand 100 states and 163 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:04:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:47,130 INFO L93 Difference]: Finished difference Result 299 states and 486 transitions. [2023-12-15 20:04:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:04:47,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-12-15 20:04:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:47,141 INFO L225 Difference]: With dead ends: 299 [2023-12-15 20:04:47,141 INFO L226 Difference]: Without dead ends: 200 [2023-12-15 20:04:47,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:04:47,160 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 159 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:47,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 595 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:04:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-15 20:04:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 102. [2023-12-15 20:04:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 20:04:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-12-15 20:04:47,197 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 208 [2023-12-15 20:04:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:47,200 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-12-15 20:04:47,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:04:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-12-15 20:04:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-15 20:04:47,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:47,203 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:47,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:47,416 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,SelfDestructingSolverStorable1 [2023-12-15 20:04:47,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:47,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash -225334497, now seen corresponding path program 1 times [2023-12-15 20:04:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:47,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811468328] [2023-12-15 20:04:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:47,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:47,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201865918] [2023-12-15 20:04:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:47,480 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) [2023-12-15 20:04:47,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:04:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:47,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:04:47,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:04:48,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:04:48,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811468328] [2023-12-15 20:04:48,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:04:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201865918] [2023-12-15 20:04:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201865918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:04:48,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:04:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:04:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551516404] [2023-12-15 20:04:48,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:04:48,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:04:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:04:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:04:48,222 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:04:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:48,271 INFO L93 Difference]: Finished difference Result 333 states and 537 transitions. [2023-12-15 20:04:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:04:48,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 209 [2023-12-15 20:04:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:48,274 INFO L225 Difference]: With dead ends: 333 [2023-12-15 20:04:48,274 INFO L226 Difference]: Without dead ends: 232 [2023-12-15 20:04:48,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:04:48,276 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 163 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:48,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 469 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:04:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-15 20:04:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2023-12-15 20:04:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 134 states have internal predecessors, (197), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-15 20:04:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 329 transitions. [2023-12-15 20:04:48,321 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 329 transitions. Word has length 209 [2023-12-15 20:04:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:48,323 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 329 transitions. [2023-12-15 20:04:48,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:04:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 329 transitions. [2023-12-15 20:04:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:04:48,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:48,326 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:48,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:48,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:48,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:48,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1973781639, now seen corresponding path program 1 times [2023-12-15 20:04:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709916988] [2023-12-15 20:04:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:48,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:48,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94300350] [2023-12-15 20:04:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:48,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:48,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:48,565 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) [2023-12-15 20:04:48,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:04:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:48,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 20:04:48,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-15 20:04:50,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:04:50,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:50,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709916988] [2023-12-15 20:04:50,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:04:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94300350] [2023-12-15 20:04:50,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94300350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:04:50,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:04:50,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-15 20:04:50,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052879356] [2023-12-15 20:04:50,860 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 20:04:50,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:04:50,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:04:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:04:50,863 INFO L87 Difference]: Start difference. First operand 203 states and 329 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-15 20:04:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:51,663 INFO L93 Difference]: Finished difference Result 617 states and 977 transitions. [2023-12-15 20:04:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:04:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-12-15 20:04:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:51,669 INFO L225 Difference]: With dead ends: 617 [2023-12-15 20:04:51,669 INFO L226 Difference]: Without dead ends: 415 [2023-12-15 20:04:51,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2023-12-15 20:04:51,671 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 364 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:51,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 703 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:04:51,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-15 20:04:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2023-12-15 20:04:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.4597701149425288) internal successors, (381), 261 states have internal predecessors, (381), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-15 20:04:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 579 transitions. [2023-12-15 20:04:51,725 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 579 transitions. Word has length 210 [2023-12-15 20:04:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:51,726 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 579 transitions. [2023-12-15 20:04:51,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-15 20:04:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 579 transitions. [2023-12-15 20:04:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:04:51,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:51,728 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:51,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:51,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:51,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:51,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1164435013, now seen corresponding path program 1 times [2023-12-15 20:04:51,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:51,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284899593] [2023-12-15 20:04:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:51,977 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092231612] [2023-12-15 20:04:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:51,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:51,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:51,987 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) [2023-12-15 20:04:51,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:04:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:52,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:04:52,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:04:52,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:04:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284899593] [2023-12-15 20:04:52,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:04:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092231612] [2023-12-15 20:04:52,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092231612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:04:52,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:04:52,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:04:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981451691] [2023-12-15 20:04:52,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:04:52,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:04:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:04:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:04:52,413 INFO L87 Difference]: Start difference. First operand 365 states and 579 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:04:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:52,557 INFO L93 Difference]: Finished difference Result 617 states and 982 transitions. [2023-12-15 20:04:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:04:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-15 20:04:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:52,560 INFO L225 Difference]: With dead ends: 617 [2023-12-15 20:04:52,560 INFO L226 Difference]: Without dead ends: 347 [2023-12-15 20:04:52,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:04:52,562 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 107 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:52,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 466 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:04:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-15 20:04:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 288. [2023-12-15 20:04:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 184 states have (on average 1.4293478260869565) internal successors, (263), 184 states have internal predecessors, (263), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-15 20:04:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 461 transitions. [2023-12-15 20:04:52,605 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 461 transitions. Word has length 210 [2023-12-15 20:04:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:52,606 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 461 transitions. [2023-12-15 20:04:52,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:04:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 461 transitions. [2023-12-15 20:04:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:04:52,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:52,608 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:52,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:52,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:52,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:52,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:52,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1386975625, now seen corresponding path program 1 times [2023-12-15 20:04:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:52,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807253682] [2023-12-15 20:04:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:52,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:52,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333402199] [2023-12-15 20:04:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:52,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:52,857 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) [2023-12-15 20:04:52,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:04:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:53,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-15 20:04:53,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-15 20:04:54,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:04:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807253682] [2023-12-15 20:04:57,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:04:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333402199] [2023-12-15 20:04:57,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333402199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:04:57,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:04:57,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-15 20:04:57,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161816555] [2023-12-15 20:04:57,690 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 20:04:57,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:04:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:04:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:04:57,691 INFO L87 Difference]: Start difference. First operand 288 states and 461 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-15 20:04:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:58,532 INFO L93 Difference]: Finished difference Result 617 states and 970 transitions. [2023-12-15 20:04:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 20:04:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-12-15 20:04:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:58,535 INFO L225 Difference]: With dead ends: 617 [2023-12-15 20:04:58,535 INFO L226 Difference]: Without dead ends: 415 [2023-12-15 20:04:58,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-12-15 20:04:58,537 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 237 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:58,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 872 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:04:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-15 20:04:58,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2023-12-15 20:04:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.4444444444444444) internal successors, (377), 261 states have internal predecessors, (377), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-15 20:04:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 575 transitions. [2023-12-15 20:04:58,572 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 575 transitions. Word has length 210 [2023-12-15 20:04:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:58,572 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 575 transitions. [2023-12-15 20:04:58,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-15 20:04:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 575 transitions. [2023-12-15 20:04:58,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:04:58,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:58,575 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:58,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:58,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:58,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:58,782 INFO L85 PathProgramCache]: Analyzing trace with hash -577628999, now seen corresponding path program 1 times [2023-12-15 20:04:58,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:58,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236786257] [2023-12-15 20:04:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:58,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:58,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017124234] [2023-12-15 20:04:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:58,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:58,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:58,806 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) [2023-12-15 20:04:58,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:04:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:59,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 20:04:59,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:05:01,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236786257] [2023-12-15 20:05:01,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017124234] [2023-12-15 20:05:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017124234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:05:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836353452] [2023-12-15 20:05:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:01,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:05:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:05:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:05:01,103 INFO L87 Difference]: Start difference. First operand 365 states and 575 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:02,658 INFO L93 Difference]: Finished difference Result 1029 states and 1613 transitions. [2023-12-15 20:05:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:05:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-15 20:05:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:02,663 INFO L225 Difference]: With dead ends: 1029 [2023-12-15 20:05:02,664 INFO L226 Difference]: Without dead ends: 827 [2023-12-15 20:05:02,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:05:02,665 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 355 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:02,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 808 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 20:05:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-15 20:05:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 690. [2023-12-15 20:05:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 511 states have (on average 1.4344422700587085) internal successors, (733), 512 states have internal predecessors, (733), 170 states have call successors, (170), 8 states have call predecessors, (170), 8 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-15 20:05:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1073 transitions. [2023-12-15 20:05:02,729 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1073 transitions. Word has length 210 [2023-12-15 20:05:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:02,730 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1073 transitions. [2023-12-15 20:05:02,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1073 transitions. [2023-12-15 20:05:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:05:02,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:02,733 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:02,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:02,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:02,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash -520370697, now seen corresponding path program 1 times [2023-12-15 20:05:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81269257] [2023-12-15 20:05:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:02,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:02,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760843004] [2023-12-15 20:05:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:02,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:02,964 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) [2023-12-15 20:05:02,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:05:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:03,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 20:05:03,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:05:06,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81269257] [2023-12-15 20:05:06,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760843004] [2023-12-15 20:05:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760843004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:06,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:06,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:05:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794985977] [2023-12-15 20:05:06,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:05:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:05:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:05:06,564 INFO L87 Difference]: Start difference. First operand 690 states and 1073 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:10,349 INFO L93 Difference]: Finished difference Result 1276 states and 1996 transitions. [2023-12-15 20:05:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 20:05:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-15 20:05:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:10,355 INFO L225 Difference]: With dead ends: 1276 [2023-12-15 20:05:10,355 INFO L226 Difference]: Without dead ends: 827 [2023-12-15 20:05:10,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-15 20:05:10,357 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 306 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:10,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 876 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 20:05:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-15 20:05:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 692. [2023-12-15 20:05:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 513 states have (on average 1.432748538011696) internal successors, (735), 514 states have internal predecessors, (735), 170 states have call successors, (170), 8 states have call predecessors, (170), 8 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-15 20:05:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1075 transitions. [2023-12-15 20:05:10,425 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1075 transitions. Word has length 210 [2023-12-15 20:05:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:10,426 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1075 transitions. [2023-12-15 20:05:10,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1075 transitions. [2023-12-15 20:05:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:05:10,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:10,429 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:10,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:10,639 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,SelfDestructingSolverStorable7 [2023-12-15 20:05:10,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:10,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1043966952, now seen corresponding path program 1 times [2023-12-15 20:05:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031692045] [2023-12-15 20:05:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:10,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:10,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889233731] [2023-12-15 20:05:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:10,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:10,665 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) [2023-12-15 20:05:10,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:05:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:10,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-15 20:05:10,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 708 proven. 249 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2023-12-15 20:05:12,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:05:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-15 20:05:14,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:14,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031692045] [2023-12-15 20:05:14,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:14,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889233731] [2023-12-15 20:05:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889233731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:05:14,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:05:14,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-12-15 20:05:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566727507] [2023-12-15 20:05:14,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:05:14,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-15 20:05:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:14,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-15 20:05:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-12-15 20:05:14,998 INFO L87 Difference]: Start difference. First operand 692 states and 1075 transitions. Second operand has 24 states, 23 states have (on average 4.434782608695652) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) [2023-12-15 20:05:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:21,019 INFO L93 Difference]: Finished difference Result 2999 states and 4588 transitions. [2023-12-15 20:05:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-15 20:05:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.434782608695652) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) Word has length 210 [2023-12-15 20:05:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:21,033 INFO L225 Difference]: With dead ends: 2999 [2023-12-15 20:05:21,033 INFO L226 Difference]: Without dead ends: 2753 [2023-12-15 20:05:21,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1215, Invalid=4485, Unknown=0, NotChecked=0, Total=5700 [2023-12-15 20:05:21,038 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2270 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:21,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 1218 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 20:05:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2023-12-15 20:05:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 1748. [2023-12-15 20:05:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1234 states have (on average 1.4149108589951378) internal successors, (1746), 1242 states have internal predecessors, (1746), 477 states have call successors, (477), 36 states have call predecessors, (477), 36 states have return successors, (477), 469 states have call predecessors, (477), 477 states have call successors, (477) [2023-12-15 20:05:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2700 transitions. [2023-12-15 20:05:21,341 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2700 transitions. Word has length 210 [2023-12-15 20:05:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:21,342 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2700 transitions. [2023-12-15 20:05:21,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.434782608695652) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) [2023-12-15 20:05:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2700 transitions. [2023-12-15 20:05:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:05:21,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:21,344 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:21,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:21,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:21,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:21,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -836424323, now seen corresponding path program 1 times [2023-12-15 20:05:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378051857] [2023-12-15 20:05:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:21,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:21,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:21,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40677863] [2023-12-15 20:05:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:21,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:21,580 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) [2023-12-15 20:05:21,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:05:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:21,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 20:05:21,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:05:24,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:24,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:24,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378051857] [2023-12-15 20:05:24,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:24,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40677863] [2023-12-15 20:05:24,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40677863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:24,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:24,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:05:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816778720] [2023-12-15 20:05:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:24,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:05:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:05:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:05:24,646 INFO L87 Difference]: Start difference. First operand 1748 states and 2700 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:28,297 INFO L93 Difference]: Finished difference Result 2584 states and 4018 transitions. [2023-12-15 20:05:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:05:28,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-15 20:05:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:28,308 INFO L225 Difference]: With dead ends: 2584 [2023-12-15 20:05:28,308 INFO L226 Difference]: Without dead ends: 2115 [2023-12-15 20:05:28,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:05:28,311 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 513 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:28,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1019 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 20:05:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-12-15 20:05:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1993. [2023-12-15 20:05:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1387 states have (on average 1.4116798846431147) internal successors, (1958), 1392 states have internal predecessors, (1958), 563 states have call successors, (563), 42 states have call predecessors, (563), 42 states have return successors, (563), 558 states have call predecessors, (563), 563 states have call successors, (563) [2023-12-15 20:05:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3084 transitions. [2023-12-15 20:05:28,687 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3084 transitions. Word has length 210 [2023-12-15 20:05:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3084 transitions. [2023-12-15 20:05:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3084 transitions. [2023-12-15 20:05:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-15 20:05:28,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:28,691 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:28,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:28,901 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,SelfDestructingSolverStorable9 [2023-12-15 20:05:28,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:28,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -779166021, now seen corresponding path program 1 times [2023-12-15 20:05:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063704029] [2023-12-15 20:05:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:28,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:28,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107411600] [2023-12-15 20:05:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:28,931 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) [2023-12-15 20:05:28,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:05:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:29,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 20:05:29,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:05:32,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063704029] [2023-12-15 20:05:32,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107411600] [2023-12-15 20:05:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107411600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:32,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:05:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498098904] [2023-12-15 20:05:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:05:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:05:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:05:32,981 INFO L87 Difference]: Start difference. First operand 1993 states and 3084 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:41,117 INFO L93 Difference]: Finished difference Result 2684 states and 4164 transitions. [2023-12-15 20:05:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 20:05:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-15 20:05:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:41,127 INFO L225 Difference]: With dead ends: 2684 [2023-12-15 20:05:41,127 INFO L226 Difference]: Without dead ends: 2115 [2023-12-15 20:05:41,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-15 20:05:41,131 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 442 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:41,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1380 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-15 20:05:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-12-15 20:05:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2003. [2023-12-15 20:05:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1397 states have (on average 1.41159627773801) internal successors, (1972), 1402 states have internal predecessors, (1972), 563 states have call successors, (563), 42 states have call predecessors, (563), 42 states have return successors, (563), 558 states have call predecessors, (563), 563 states have call successors, (563) [2023-12-15 20:05:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3098 transitions. [2023-12-15 20:05:41,499 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3098 transitions. Word has length 210 [2023-12-15 20:05:41,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:41,500 INFO L495 AbstractCegarLoop]: Abstraction has 2003 states and 3098 transitions. [2023-12-15 20:05:41,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-15 20:05:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3098 transitions. [2023-12-15 20:05:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-15 20:05:41,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:41,501 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:41,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:41,712 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,SelfDestructingSolverStorable10 [2023-12-15 20:05:41,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:41,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1765376786, now seen corresponding path program 1 times [2023-12-15 20:05:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:41,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49505061] [2023-12-15 20:05:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:41,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:41,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:41,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449493968] [2023-12-15 20:05:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:41,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:41,736 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) [2023-12-15 20:05:41,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:05:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:41,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:05:41,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-15 20:05:41,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49505061] [2023-12-15 20:05:41,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449493968] [2023-12-15 20:05:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449493968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:41,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:05:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810776799] [2023-12-15 20:05:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:05:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:05:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:05:41,895 INFO L87 Difference]: Start difference. First operand 2003 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Received shutdown request... [2023-12-15 20:05:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:05:41,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:05:41,950 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 10 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:41,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 256 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:05:41,952 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:05:41,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:41,982 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:05:41,990 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:05:42,153 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,SelfDestructingSolverStorable11 [2023-12-15 20:05:42,154 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2003states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (206 states constructed, input type IntersectNwa). [2023-12-15 20:05:42,158 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:42,160 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:05:42,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:05:42 BoogieIcfgContainer [2023-12-15 20:05:42,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:05:42,162 INFO L158 Benchmark]: Toolchain (without parser) took 58068.97ms. Allocated memory was 182.5MB in the beginning and 604.0MB in the end (delta: 421.5MB). Free memory was 145.6MB in the beginning and 502.9MB in the end (delta: -357.3MB). Peak memory consumption was 65.7MB. Max. memory is 8.0GB. [2023-12-15 20:05:42,162 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 182.5MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:05:42,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.25ms. Allocated memory is still 182.5MB. Free memory was 145.6MB in the beginning and 129.4MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:05:42,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.10ms. Allocated memory is still 182.5MB. Free memory was 129.4MB in the beginning and 124.7MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:05:42,162 INFO L158 Benchmark]: Boogie Preprocessor took 94.49ms. Allocated memory is still 182.5MB. Free memory was 124.7MB in the beginning and 118.8MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:05:42,163 INFO L158 Benchmark]: RCFGBuilder took 621.55ms. Allocated memory is still 182.5MB. Free memory was 118.8MB in the beginning and 85.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 20:05:42,163 INFO L158 Benchmark]: TraceAbstraction took 56974.42ms. Allocated memory was 182.5MB in the beginning and 604.0MB in the end (delta: 421.5MB). Free memory was 85.2MB in the beginning and 502.9MB in the end (delta: -417.7MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2023-12-15 20:05:42,164 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 182.5MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 303.25ms. Allocated memory is still 182.5MB. Free memory was 145.6MB in the beginning and 129.4MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.10ms. Allocated memory is still 182.5MB. Free memory was 129.4MB in the beginning and 124.7MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 94.49ms. Allocated memory is still 182.5MB. Free memory was 124.7MB in the beginning and 118.8MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 621.55ms. Allocated memory is still 182.5MB. Free memory was 118.8MB in the beginning and 85.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 56974.42ms. Allocated memory was 182.5MB in the beginning and 604.0MB in the end (delta: 421.5MB). Free memory was 85.2MB in the beginning and 502.9MB in the end (delta: -417.7MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (2003states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (206 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.9s, OverallIterations: 12, TraceHistogramMax: 33, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4959 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4926 mSDsluCounter, 8822 SdHoareTripleChecker+Invalid, 13.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6576 mSDsCounter, 986 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6228 IncrementalHoareTripleChecker+Invalid, 7214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 986 mSolverCounterUnsat, 2246 mSDtfsCounter, 6228 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2902 GetRequests, 2681 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2003occurred in iteration=11, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1797 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 24.4s InterpolantComputationTime, 2724 NumberOfCodeBlocks, 2724 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2713 ConstructedInterpolants, 0 QuantifiedInterpolants, 27078 SizeOfPredicates, 111 NumberOfNonLiveVariables, 5995 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 26955/27456 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown