/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-250_file-76.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:51:38,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:51:38,493 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 19:51:38,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:51:38,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:51:38,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:51:38,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:51:38,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:51:38,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:51:38,523 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:51:38,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:51:38,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:51:38,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:51:38,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:51:38,526 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:51:38,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:51:38,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:51:38,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:51:38,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:51:38,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:51:38,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:51:38,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:51:38,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:51:38,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:51:38,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:51:38,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:51:38,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:51:38,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:51:38,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:51:38,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:51:38,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:51:38,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:51:38,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:51:38,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:51:38,530 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:51:38,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:51:38,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:51:38,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:51:38,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:51:38,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:51:38,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:51:38,766 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:51:38,767 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:51:38,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-76.i [2023-12-15 19:51:39,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:51:39,950 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:51:39,950 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-76.i [2023-12-15 19:51:39,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfdef691/1e69f7430e484223a8aaecdf457cf983/FLAG0c8dcba19 [2023-12-15 19:51:40,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfdef691/1e69f7430e484223a8aaecdf457cf983 [2023-12-15 19:51:40,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:51:40,342 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:51:40,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:51:40,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:51:40,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:51:40,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218420ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40, skipping insertion in model container [2023-12-15 19:51:40,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,379 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:51:40,496 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-250_file-76.i[916,929] [2023-12-15 19:51:40,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:51:40,631 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:51:40,647 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-250_file-76.i[916,929] [2023-12-15 19:51:40,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:51:40,709 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:51:40,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40 WrapperNode [2023-12-15 19:51:40,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:51:40,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:51:40,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:51:40,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:51:40,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,789 INFO L138 Inliner]: procedures = 26, calls = 113, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 650 [2023-12-15 19:51:40,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:51:40,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:51:40,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:51:40,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:51:40,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,827 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 19:51:40,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:51:40,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:51:40,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:51:40,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:51:40,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (1/1) ... [2023-12-15 19:51:40,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:51:40,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:40,875 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 19:51:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:51:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:51:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:51:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:51:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:51:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:51:40,900 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 19:51:41,011 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:51:41,014 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:51:41,452 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:51:41,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:51:41,472 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:51:41,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:51:41 BoogieIcfgContainer [2023-12-15 19:51:41,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:51:41,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:51:41,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:51:41,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:51:41,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:51:40" (1/3) ... [2023-12-15 19:51:41,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56389d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:51:41, skipping insertion in model container [2023-12-15 19:51:41,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:40" (2/3) ... [2023-12-15 19:51:41,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56389d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:51:41, skipping insertion in model container [2023-12-15 19:51:41,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:51:41" (3/3) ... [2023-12-15 19:51:41,477 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-76.i [2023-12-15 19:51:41,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:51:41,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:51:41,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:51:41,538 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;@769e79ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:51:41,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:51:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 150 states have (on average 1.5733333333333333) internal successors, (236), 151 states have internal predecessors, (236), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:51:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2023-12-15 19:51:41,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:41,564 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:41,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:41,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:41,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1390981157, now seen corresponding path program 1 times [2023-12-15 19:51:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941362232] [2023-12-15 19:51:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:41,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:41,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:41,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941362232] [2023-12-15 19:51:41,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:51:41,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207569136] [2023-12-15 19:51:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:41,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:41,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:41,802 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 19:51:41,824 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 19:51:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:42,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:51:42,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 19602 trivial. 0 not checked. [2023-12-15 19:51:42,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207569136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:51:42,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117287949] [2023-12-15 19:51:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:42,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:51:42,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:51:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:51:42,156 INFO L87 Difference]: Start difference. First operand has 253 states, 150 states have (on average 1.5733333333333333) internal successors, (236), 151 states have internal predecessors, (236), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-15 19:51:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:42,203 INFO L93 Difference]: Finished difference Result 500 states and 964 transitions. [2023-12-15 19:51:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:51:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 2 states have call successors, (100) Word has length 598 [2023-12-15 19:51:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:42,219 INFO L225 Difference]: With dead ends: 500 [2023-12-15 19:51:42,219 INFO L226 Difference]: Without dead ends: 248 [2023-12-15 19:51:42,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 597 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 19:51:42,225 INFO L413 NwaCegarLoop]: 419 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, 419 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 19:51:42,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-15 19:51:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-12-15 19:51:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 146 states have (on average 1.5205479452054795) internal successors, (222), 146 states have internal predecessors, (222), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:51:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 422 transitions. [2023-12-15 19:51:42,275 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 422 transitions. Word has length 598 [2023-12-15 19:51:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:42,275 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 422 transitions. [2023-12-15 19:51:42,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-15 19:51:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 422 transitions. [2023-12-15 19:51:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2023-12-15 19:51:42,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:42,299 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:42,321 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 19:51:42,505 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 19:51:42,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:42,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:42,509 INFO L85 PathProgramCache]: Analyzing trace with hash 130837293, now seen corresponding path program 1 times [2023-12-15 19:51:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:42,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649484346] [2023-12-15 19:51:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:42,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:42,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578380984] [2023-12-15 19:51:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:42,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:42,613 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 19:51:42,622 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 19:51:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:42,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:42,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:51:42,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:42,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:42,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649484346] [2023-12-15 19:51:42,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:42,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578380984] [2023-12-15 19:51:42,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578380984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:42,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:42,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932065751] [2023-12-15 19:51:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:42,913 INFO L87 Difference]: Start difference. First operand 248 states and 422 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:42,961 INFO L93 Difference]: Finished difference Result 495 states and 843 transitions. [2023-12-15 19:51:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 598 [2023-12-15 19:51:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:42,974 INFO L225 Difference]: With dead ends: 495 [2023-12-15 19:51:42,975 INFO L226 Difference]: Without dead ends: 248 [2023-12-15 19:51:42,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 596 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 19:51:42,978 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 0 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:42,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 829 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-15 19:51:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-12-15 19:51:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 146 states have (on average 1.5136986301369864) internal successors, (221), 146 states have internal predecessors, (221), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:51:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 421 transitions. [2023-12-15 19:51:43,015 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 421 transitions. Word has length 598 [2023-12-15 19:51:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:43,019 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 421 transitions. [2023-12-15 19:51:43,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 421 transitions. [2023-12-15 19:51:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-12-15 19:51:43,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:43,047 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:43,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:51:43,252 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 19:51:43,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:43,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1444290929, now seen corresponding path program 1 times [2023-12-15 19:51:43,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:43,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070376240] [2023-12-15 19:51:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:43,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:43,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:43,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883382174] [2023-12-15 19:51:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:43,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:43,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:43,368 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 19:51:43,412 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 19:51:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:43,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:51:43,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:51:43,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070376240] [2023-12-15 19:51:43,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883382174] [2023-12-15 19:51:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883382174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:51:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846637484] [2023-12-15 19:51:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:51:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:51:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:43,734 INFO L87 Difference]: Start difference. First operand 248 states and 421 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:43,797 INFO L93 Difference]: Finished difference Result 646 states and 1098 transitions. [2023-12-15 19:51:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:51:43,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 601 [2023-12-15 19:51:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:43,800 INFO L225 Difference]: With dead ends: 646 [2023-12-15 19:51:43,801 INFO L226 Difference]: Without dead ends: 399 [2023-12-15 19:51:43,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 598 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 19:51:43,802 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 238 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:43,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1454 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-15 19:51:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2023-12-15 19:51:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 249 states have (on average 1.5461847389558232) internal successors, (385), 250 states have internal predecessors, (385), 144 states have call successors, (144), 2 states have call predecessors, (144), 2 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-15 19:51:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 673 transitions. [2023-12-15 19:51:43,826 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 673 transitions. Word has length 601 [2023-12-15 19:51:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:43,827 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 673 transitions. [2023-12-15 19:51:43,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 673 transitions. [2023-12-15 19:51:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 19:51:43,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:43,849 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:43,864 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 19:51:44,055 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 19:51:44,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:44,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash 179929565, now seen corresponding path program 1 times [2023-12-15 19:51:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:44,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633454882] [2023-12-15 19:51:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:44,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:44,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070344730] [2023-12-15 19:51:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:44,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:44,102 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 19:51:44,131 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 19:51:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:44,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:51:44,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:51:44,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:44,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:44,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633454882] [2023-12-15 19:51:44,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:44,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070344730] [2023-12-15 19:51:44,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070344730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:44,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:44,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654884723] [2023-12-15 19:51:44,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:44,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:51:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:51:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:44,921 INFO L87 Difference]: Start difference. First operand 396 states and 673 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:45,199 INFO L93 Difference]: Finished difference Result 1186 states and 2017 transitions. [2023-12-15 19:51:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:51:45,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 602 [2023-12-15 19:51:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:45,204 INFO L225 Difference]: With dead ends: 1186 [2023-12-15 19:51:45,204 INFO L226 Difference]: Without dead ends: 791 [2023-12-15 19:51:45,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:45,206 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 124 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:45,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1034 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:51:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-12-15 19:51:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2023-12-15 19:51:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 496 states have (on average 1.5443548387096775) internal successors, (766), 498 states have internal predecessors, (766), 288 states have call successors, (288), 4 states have call predecessors, (288), 4 states have return successors, (288), 286 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-15 19:51:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1342 transitions. [2023-12-15 19:51:45,264 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1342 transitions. Word has length 602 [2023-12-15 19:51:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:45,265 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1342 transitions. [2023-12-15 19:51:45,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1342 transitions. [2023-12-15 19:51:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 19:51:45,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:45,269 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:45,276 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 19:51:45,475 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 19:51:45,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:45,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash -213097445, now seen corresponding path program 1 times [2023-12-15 19:51:45,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:45,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142368150] [2023-12-15 19:51:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:45,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:45,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029295465] [2023-12-15 19:51:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:45,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:45,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:45,555 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 19:51:45,584 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 19:51:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:45,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:45,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:51:45,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142368150] [2023-12-15 19:51:45,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029295465] [2023-12-15 19:51:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029295465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:45,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505607513] [2023-12-15 19:51:45,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:45,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:45,874 INFO L87 Difference]: Start difference. First operand 789 states and 1342 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:45,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:45,921 INFO L93 Difference]: Finished difference Result 2011 states and 3436 transitions. [2023-12-15 19:51:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:45,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 602 [2023-12-15 19:51:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:45,927 INFO L225 Difference]: With dead ends: 2011 [2023-12-15 19:51:45,927 INFO L226 Difference]: Without dead ends: 1223 [2023-12-15 19:51:45,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 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 19:51:45,929 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 176 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:45,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 878 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-12-15 19:51:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1217. [2023-12-15 19:51:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 864 states have (on average 1.6134259259259258) internal successors, (1394), 870 states have internal predecessors, (1394), 344 states have call successors, (344), 8 states have call predecessors, (344), 8 states have return successors, (344), 338 states have call predecessors, (344), 344 states have call successors, (344) [2023-12-15 19:51:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2082 transitions. [2023-12-15 19:51:46,027 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2082 transitions. Word has length 602 [2023-12-15 19:51:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:46,028 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2082 transitions. [2023-12-15 19:51:46,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2082 transitions. [2023-12-15 19:51:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 19:51:46,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:46,032 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:46,041 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 19:51:46,239 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 19:51:46,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:46,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1715175257, now seen corresponding path program 1 times [2023-12-15 19:51:46,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:46,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545624224] [2023-12-15 19:51:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:46,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:46,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856062568] [2023-12-15 19:51:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:46,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:46,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:46,283 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 19:51:46,286 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 19:51:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:46,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:46,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:51:46,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:46,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545624224] [2023-12-15 19:51:46,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:46,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856062568] [2023-12-15 19:51:46,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856062568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:46,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:46,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499348476] [2023-12-15 19:51:46,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:46,577 INFO L87 Difference]: Start difference. First operand 1217 states and 2082 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:46,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:46,631 INFO L93 Difference]: Finished difference Result 2455 states and 4180 transitions. [2023-12-15 19:51:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:46,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 602 [2023-12-15 19:51:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:46,637 INFO L225 Difference]: With dead ends: 2455 [2023-12-15 19:51:46,637 INFO L226 Difference]: Without dead ends: 1239 [2023-12-15 19:51:46,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 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 19:51:46,641 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 172 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:46,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 931 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-12-15 19:51:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1029. [2023-12-15 19:51:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 732 states have (on average 1.639344262295082) internal successors, (1200), 734 states have internal predecessors, (1200), 288 states have call successors, (288), 8 states have call predecessors, (288), 8 states have return successors, (288), 286 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-15 19:51:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1776 transitions. [2023-12-15 19:51:46,732 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1776 transitions. Word has length 602 [2023-12-15 19:51:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:46,733 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1776 transitions. [2023-12-15 19:51:46,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1776 transitions. [2023-12-15 19:51:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 19:51:46,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:46,737 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:46,751 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 19:51:46,943 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 19:51:46,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:46,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -278969449, now seen corresponding path program 1 times [2023-12-15 19:51:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:46,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670908490] [2023-12-15 19:51:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:46,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:46,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260452102] [2023-12-15 19:51:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:46,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:47,000 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 19:51:47,001 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 19:51:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:47,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:51:47,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 6217 proven. 240 refuted. 0 times theorem prover too weak. 13343 trivial. 0 not checked. [2023-12-15 19:51:47,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 57 proven. 240 refuted. 0 times theorem prover too weak. 19503 trivial. 0 not checked. [2023-12-15 19:51:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670908490] [2023-12-15 19:51:48,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260452102] [2023-12-15 19:51:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260452102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:48,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:51:48,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467878685] [2023-12-15 19:51:48,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:51:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:48,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:51:48,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:51:48,138 INFO L87 Difference]: Start difference. First operand 1029 states and 1776 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2023-12-15 19:51:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:48,599 INFO L93 Difference]: Finished difference Result 2097 states and 3587 transitions. [2023-12-15 19:51:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:51:48,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) Word has length 602 [2023-12-15 19:51:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:48,604 INFO L225 Difference]: With dead ends: 2097 [2023-12-15 19:51:48,608 INFO L226 Difference]: Without dead ends: 1069 [2023-12-15 19:51:48,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 1196 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:51:48,611 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 516 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:48,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 728 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:51:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-15 19:51:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1045. [2023-12-15 19:51:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 744 states have (on average 1.60752688172043) internal successors, (1196), 746 states have internal predecessors, (1196), 288 states have call successors, (288), 12 states have call predecessors, (288), 12 states have return successors, (288), 286 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-15 19:51:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1772 transitions. [2023-12-15 19:51:48,695 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1772 transitions. Word has length 602 [2023-12-15 19:51:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:48,696 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1772 transitions. [2023-12-15 19:51:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2023-12-15 19:51:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1772 transitions. [2023-12-15 19:51:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 19:51:48,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:48,701 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:48,720 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 19:51:48,908 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 19:51:48,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:48,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1830178465, now seen corresponding path program 1 times [2023-12-15 19:51:48,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:48,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880206858] [2023-12-15 19:51:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:48,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:48,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:48,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333329827] [2023-12-15 19:51:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:48,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:48,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:48,960 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 19:51:48,989 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 19:51:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:49,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:51:49,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:51:49,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:49,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:49,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880206858] [2023-12-15 19:51:49,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:49,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333329827] [2023-12-15 19:51:49,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333329827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:49,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:49,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:51:49,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509480710] [2023-12-15 19:51:49,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:51:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:51:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:49,377 INFO L87 Difference]: Start difference. First operand 1045 states and 1772 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:49,837 INFO L93 Difference]: Finished difference Result 3069 states and 5043 transitions. [2023-12-15 19:51:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:51:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 603 [2023-12-15 19:51:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:49,848 INFO L225 Difference]: With dead ends: 3069 [2023-12-15 19:51:49,848 INFO L226 Difference]: Without dead ends: 2025 [2023-12-15 19:51:49,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 601 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 19:51:49,851 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 556 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:49,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1676 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:51:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2023-12-15 19:51:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2013. [2023-12-15 19:51:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1308 states have (on average 1.4678899082568808) internal successors, (1920), 1318 states have internal predecessors, (1920), 664 states have call successors, (664), 40 states have call predecessors, (664), 40 states have return successors, (664), 654 states have call predecessors, (664), 664 states have call successors, (664) [2023-12-15 19:51:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 3248 transitions. [2023-12-15 19:51:49,988 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 3248 transitions. Word has length 603 [2023-12-15 19:51:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:49,988 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 3248 transitions. [2023-12-15 19:51:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:51:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 3248 transitions. [2023-12-15 19:51:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 19:51:49,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:49,993 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:50,024 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 19:51:50,199 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 19:51:50,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:50,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash -158297953, now seen corresponding path program 1 times [2023-12-15 19:51:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777307097] [2023-12-15 19:51:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:50,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370519350] [2023-12-15 19:51:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:50,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:50,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:50,274 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 19:51:50,301 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 19:51:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:50,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:51:50,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9693 proven. 174 refuted. 0 times theorem prover too weak. 9933 trivial. 0 not checked. [2023-12-15 19:51:51,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 123 proven. 174 refuted. 0 times theorem prover too weak. 19503 trivial. 0 not checked. [2023-12-15 19:51:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777307097] [2023-12-15 19:51:51,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370519350] [2023-12-15 19:51:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370519350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:51,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-15 19:51:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708971139] [2023-12-15 19:51:51,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:51:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:51:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:51:51,911 INFO L87 Difference]: Start difference. First operand 2013 states and 3248 transitions. Second operand has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 3 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 3 states have call predecessors, (159), 3 states have call successors, (159) [2023-12-15 19:51:58,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-15 19:52:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:03,556 INFO L93 Difference]: Finished difference Result 9457 states and 14872 transitions. [2023-12-15 19:52:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 19:52:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 3 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 3 states have call predecessors, (159), 3 states have call successors, (159) Word has length 603 [2023-12-15 19:52:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:03,630 INFO L225 Difference]: With dead ends: 9457 [2023-12-15 19:52:03,630 INFO L226 Difference]: Without dead ends: 7445 [2023-12-15 19:52:03,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1226 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2023-12-15 19:52:03,655 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1250 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 623 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:03,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 2567 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2126 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2023-12-15 19:52:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2023-12-15 19:52:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 7071. [2023-12-15 19:52:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7071 states, 4782 states have (on average 1.4608950230029276) internal successors, (6986), 4826 states have internal predecessors, (6986), 2112 states have call successors, (2112), 176 states have call predecessors, (2112), 176 states have return successors, (2112), 2068 states have call predecessors, (2112), 2112 states have call successors, (2112) [2023-12-15 19:52:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 11210 transitions. [2023-12-15 19:52:04,418 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 11210 transitions. Word has length 603 [2023-12-15 19:52:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:04,419 INFO L495 AbstractCegarLoop]: Abstraction has 7071 states and 11210 transitions. [2023-12-15 19:52:04,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 3 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 3 states have call predecessors, (159), 3 states have call successors, (159) [2023-12-15 19:52:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 11210 transitions. [2023-12-15 19:52:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2023-12-15 19:52:04,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:04,426 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:04,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 19:52:04,632 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 19:52:04,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:04,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -621376168, now seen corresponding path program 1 times [2023-12-15 19:52:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906199762] [2023-12-15 19:52:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:04,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:04,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:04,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681865359] [2023-12-15 19:52:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:04,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:04,691 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 19:52:04,693 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 19:52:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:04,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:52:04,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:52:05,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:05,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:05,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906199762] [2023-12-15 19:52:05,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:05,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681865359] [2023-12-15 19:52:05,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681865359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:05,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:05,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:52:05,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299901532] [2023-12-15 19:52:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:05,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:52:05,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:52:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:05,015 INFO L87 Difference]: Start difference. First operand 7071 states and 11210 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:52:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:05,827 INFO L93 Difference]: Finished difference Result 21195 states and 33596 transitions. [2023-12-15 19:52:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:52:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 604 [2023-12-15 19:52:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:05,886 INFO L225 Difference]: With dead ends: 21195 [2023-12-15 19:52:05,886 INFO L226 Difference]: Without dead ends: 14125 [2023-12-15 19:52:05,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 602 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 19:52:05,904 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 392 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:05,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1125 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:52:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2023-12-15 19:52:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 14099. [2023-12-15 19:52:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14099 states, 9522 states have (on average 1.4520058811174124) internal successors, (13826), 9610 states have internal predecessors, (13826), 4224 states have call successors, (4224), 352 states have call predecessors, (4224), 352 states have return successors, (4224), 4136 states have call predecessors, (4224), 4224 states have call successors, (4224) [2023-12-15 19:52:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 22274 transitions. [2023-12-15 19:52:07,057 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 22274 transitions. Word has length 604 [2023-12-15 19:52:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:07,058 INFO L495 AbstractCegarLoop]: Abstraction has 14099 states and 22274 transitions. [2023-12-15 19:52:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:52:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 22274 transitions. [2023-12-15 19:52:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2023-12-15 19:52:07,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:07,064 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:07,070 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 19:52:07,270 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 19:52:07,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:07,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:07,271 INFO L85 PathProgramCache]: Analyzing trace with hash 966971734, now seen corresponding path program 1 times [2023-12-15 19:52:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:07,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111643281] [2023-12-15 19:52:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:07,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:07,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108661128] [2023-12-15 19:52:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:07,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:07,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:07,303 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 19:52:07,313 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 19:52:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:07,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:52:07,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:52:08,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111643281] [2023-12-15 19:52:08,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108661128] [2023-12-15 19:52:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108661128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:08,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:08,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:52:08,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530292301] [2023-12-15 19:52:08,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:08,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:52:08,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:52:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:08,186 INFO L87 Difference]: Start difference. First operand 14099 states and 22274 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:52:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:09,376 INFO L93 Difference]: Finished difference Result 35267 states and 55756 transitions. [2023-12-15 19:52:09,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:52:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 604 [2023-12-15 19:52:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:09,433 INFO L225 Difference]: With dead ends: 35267 [2023-12-15 19:52:09,433 INFO L226 Difference]: Without dead ends: 21169 [2023-12-15 19:52:09,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 602 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 19:52:09,465 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 146 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:09,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 813 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:52:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21169 states. [2023-12-15 19:52:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21169 to 21143. [2023-12-15 19:52:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21143 states, 14278 states have (on average 1.453004622496148) internal successors, (20746), 14410 states have internal predecessors, (20746), 6336 states have call successors, (6336), 528 states have call predecessors, (6336), 528 states have return successors, (6336), 6204 states have call predecessors, (6336), 6336 states have call successors, (6336) [2023-12-15 19:52:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21143 states to 21143 states and 33418 transitions. [2023-12-15 19:52:11,311 INFO L78 Accepts]: Start accepts. Automaton has 21143 states and 33418 transitions. Word has length 604 [2023-12-15 19:52:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:11,311 INFO L495 AbstractCegarLoop]: Abstraction has 21143 states and 33418 transitions. [2023-12-15 19:52:11,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:52:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21143 states and 33418 transitions. [2023-12-15 19:52:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2023-12-15 19:52:11,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:11,321 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:11,328 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 19:52:11,528 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 19:52:11,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:11,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2033298995, now seen corresponding path program 1 times [2023-12-15 19:52:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514699835] [2023-12-15 19:52:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:11,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:11,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541606273] [2023-12-15 19:52:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:11,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:11,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:11,571 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 19:52:11,604 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 19:52:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:11,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:52:11,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:52:14,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:14,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514699835] [2023-12-15 19:52:14,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:14,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541606273] [2023-12-15 19:52:14,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541606273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:14,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:14,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:52:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72149689] [2023-12-15 19:52:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:14,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:52:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:14,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:52:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:52:14,146 INFO L87 Difference]: Start difference. First operand 21143 states and 33418 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:52:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:22,795 INFO L93 Difference]: Finished difference Result 129885 states and 205115 transitions. [2023-12-15 19:52:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 19:52:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 604 [2023-12-15 19:52:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:23,283 INFO L225 Difference]: With dead ends: 129885 [2023-12-15 19:52:23,283 INFO L226 Difference]: Without dead ends: 108743 [2023-12-15 19:52:23,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:52:23,348 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 1535 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:23,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 4008 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:52:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108743 states. [2023-12-15 19:52:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108743 to 74065. [2023-12-15 19:52:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74065 states, 50040 states have (on average 1.4459232613908872) internal successors, (72354), 50502 states have internal predecessors, (72354), 22176 states have call successors, (22176), 1848 states have call predecessors, (22176), 1848 states have return successors, (22176), 21714 states have call predecessors, (22176), 22176 states have call successors, (22176) [2023-12-15 19:52:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74065 states to 74065 states and 116706 transitions. [2023-12-15 19:52:31,514 INFO L78 Accepts]: Start accepts. Automaton has 74065 states and 116706 transitions. Word has length 604 [2023-12-15 19:52:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:31,515 INFO L495 AbstractCegarLoop]: Abstraction has 74065 states and 116706 transitions. [2023-12-15 19:52:31,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-15 19:52:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 74065 states and 116706 transitions. [2023-12-15 19:52:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2023-12-15 19:52:31,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:31,527 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:31,534 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 19:52:31,733 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 19:52:31,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:31,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1223952369, now seen corresponding path program 1 times [2023-12-15 19:52:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:31,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047100516] [2023-12-15 19:52:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:31,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:31,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679603627] [2023-12-15 19:52:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:31,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:31,768 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:31,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:52:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:32,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:52:32,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-15 19:52:32,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047100516] [2023-12-15 19:52:32,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679603627] [2023-12-15 19:52:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679603627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:52:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400696211] [2023-12-15 19:52:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:52:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:52:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:52:32,625 INFO L87 Difference]: Start difference. First operand 74065 states and 116706 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Received shutdown request... [2023-12-15 19:52:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:52:41,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:52:41,798 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 550 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:41,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2953 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:52:41,798 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:52:41,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:41,825 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:52:41,825 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 19:52:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:52:42,006 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (74065states) and FLOYD_HOARE automaton (currently 9 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (114891 states constructed, input type IntersectNwa). [2023-12-15 19:52:42,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:42,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:52:42,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:52:42 BoogieIcfgContainer [2023-12-15 19:52:42,032 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:52:42,033 INFO L158 Benchmark]: Toolchain (without parser) took 61690.52ms. Allocated memory was 175.1MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 134.1MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-15 19:52:42,033 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:52:42,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.15ms. Allocated memory is still 175.1MB. Free memory was 134.1MB in the beginning and 110.3MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 19:52:42,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.58ms. Allocated memory is still 175.1MB. Free memory was 110.3MB in the beginning and 102.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 19:52:42,033 INFO L158 Benchmark]: Boogie Preprocessor took 62.77ms. Allocated memory is still 175.1MB. Free memory was 102.2MB in the beginning and 94.2MB in the end (delta: 8.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 19:52:42,034 INFO L158 Benchmark]: RCFGBuilder took 620.01ms. Allocated memory is still 175.1MB. Free memory was 94.2MB in the beginning and 93.6MB in the end (delta: 528.9kB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 19:52:42,034 INFO L158 Benchmark]: TraceAbstraction took 60558.44ms. Allocated memory was 175.1MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 93.1MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-15 19:52:42,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 367.15ms. Allocated memory is still 175.1MB. Free memory was 134.1MB in the beginning and 110.3MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.58ms. Allocated memory is still 175.1MB. Free memory was 110.3MB in the beginning and 102.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.77ms. Allocated memory is still 175.1MB. Free memory was 102.2MB in the beginning and 94.2MB in the end (delta: 8.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 620.01ms. Allocated memory is still 175.1MB. Free memory was 94.2MB in the beginning and 93.6MB in the end (delta: 528.9kB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 60558.44ms. Allocated memory was 175.1MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 93.1MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. 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 (74065states) and FLOYD_HOARE automaton (currently 9 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (114891 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 253 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.5s, OverallIterations: 13, TraceHistogramMax: 100, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 5715 SdHoareTripleChecker+Valid, 13.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5655 mSDsluCounter, 19415 SdHoareTripleChecker+Invalid, 12.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11770 mSDsCounter, 1794 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5482 IncrementalHoareTripleChecker+Invalid, 7277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1794 mSolverCounterUnsat, 7645 mSDtfsCounter, 5482 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9060 GetRequests, 8986 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74065occurred in iteration=12, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 35361 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 8425 NumberOfCodeBlocks, 8425 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 9017 ConstructedInterpolants, 8 QuantifiedInterpolants, 25043 SizeOfPredicates, 26 NumberOfNonLiveVariables, 17043 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 296172/297000 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