/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:08:13,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:08:13,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 20:08:13,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:08:13,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:08:13,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:08:13,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:08:13,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:08:13,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:08:13,594 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:08:13,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:08:13,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:08:13,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:08:13,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:08:13,597 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:08:13,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:08:13,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:08:13,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:08:13,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:08:13,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:08:13,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:08:13,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:08:13,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:08:13,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:08:13,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:08:13,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:08:13,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:08:13,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:08:13,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:08:13,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:08:13,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:08:13,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:08:13,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:08:13,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:08:13,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:08:13,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:08:13,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:08:13,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:08:13,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:08:13,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:08:13,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:08:13,763 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:08:13,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-56.i [2023-12-20 20:08:14,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:08:14,946 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:08:14,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-56.i [2023-12-20 20:08:14,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75cb59a7/f77a8cd125944a85a28a6806e7b4ba68/FLAG47d3c2411 [2023-12-20 20:08:14,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75cb59a7/f77a8cd125944a85a28a6806e7b4ba68 [2023-12-20 20:08:14,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:08:14,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:08:14,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:08:14,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:08:14,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:08:14,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:08:14" (1/1) ... [2023-12-20 20:08:14,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10141ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:14, skipping insertion in model container [2023-12-20 20:08:14,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:08:14" (1/1) ... [2023-12-20 20:08:15,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:08:15,119 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-500_file-56.i[916,929] [2023-12-20 20:08:15,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:08:15,254 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:08:15,263 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-500_file-56.i[916,929] [2023-12-20 20:08:15,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:08:15,385 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:08:15,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15 WrapperNode [2023-12-20 20:08:15,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:08:15,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:08:15,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:08:15,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:08:15,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,463 INFO L138 Inliner]: procedures = 26, calls = 142, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 820 [2023-12-20 20:08:15,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:08:15,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:08:15,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:08:15,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:08:15,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,520 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 20:08:15,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:08:15,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:08:15,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:08:15,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:08:15,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (1/1) ... [2023-12-20 20:08:15,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:08:15,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:15,615 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) [2023-12-20 20:08:15,621 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 [2023-12-20 20:08:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:08:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:08:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:08:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:08:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:08:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:08:15,756 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:08:15,757 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:08:16,509 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:08:16,545 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:08:16,545 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:08:16,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:08:16 BoogieIcfgContainer [2023-12-20 20:08:16,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:08:16,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:08:16,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:08:16,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:08:16,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:08:14" (1/3) ... [2023-12-20 20:08:16,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f516146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:08:16, skipping insertion in model container [2023-12-20 20:08:16,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:15" (2/3) ... [2023-12-20 20:08:16,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f516146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:08:16, skipping insertion in model container [2023-12-20 20:08:16,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:08:16" (3/3) ... [2023-12-20 20:08:16,551 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-56.i [2023-12-20 20:08:16,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:08:16,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:08:16,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:08:16,613 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;@6e01d9eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:08:16,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:08:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 194 states have (on average 1.541237113402062) internal successors, (299), 195 states have internal predecessors, (299), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-20 20:08:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-12-20 20:08:16,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:16,659 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:16,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:16,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1943269413, now seen corresponding path program 1 times [2023-12-20 20:08:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436342319] [2023-12-20 20:08:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436342319] [2023-12-20 20:08:16,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:08:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355620128] [2023-12-20 20:08:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:16,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:17,013 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) [2023-12-20 20:08:17,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 20:08:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:17,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:08:17,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 32768 trivial. 0 not checked. [2023-12-20 20:08:17,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:17,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355620128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:17,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:17,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:08:17,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642454180] [2023-12-20 20:08:17,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:08:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:08:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:08:17,573 INFO L87 Difference]: Start difference. First operand has 326 states, 194 states have (on average 1.541237113402062) internal successors, (299), 195 states have internal predecessors, (299), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (129), 2 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-20 20:08:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:17,643 INFO L93 Difference]: Finished difference Result 649 states and 1241 transitions. [2023-12-20 20:08:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:08:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (129), 2 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 2 states have call successors, (129) Word has length 797 [2023-12-20 20:08:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:17,657 INFO L225 Difference]: With dead ends: 649 [2023-12-20 20:08:17,657 INFO L226 Difference]: Without dead ends: 324 [2023-12-20 20:08:17,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:08:17,666 INFO L413 NwaCegarLoop]: 549 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, 549 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 [2023-12-20 20:08:17,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-20 20:08:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2023-12-20 20:08:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 193 states have (on average 1.5233160621761659) internal successors, (294), 193 states have internal predecessors, (294), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-20 20:08:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 552 transitions. [2023-12-20 20:08:17,729 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 552 transitions. Word has length 797 [2023-12-20 20:08:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:17,729 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 552 transitions. [2023-12-20 20:08:17,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (129), 2 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-20 20:08:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 552 transitions. [2023-12-20 20:08:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-12-20 20:08:17,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:17,750 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:17,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 20:08:17,956 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 [2023-12-20 20:08:17,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:17,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash 201547355, now seen corresponding path program 1 times [2023-12-20 20:08:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489902102] [2023-12-20 20:08:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:18,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:18,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642423181] [2023-12-20 20:08:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:18,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:18,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:18,078 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) [2023-12-20 20:08:18,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 20:08:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:18,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 20:08:18,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-20 20:08:18,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:18,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489902102] [2023-12-20 20:08:18,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642423181] [2023-12-20 20:08:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642423181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:18,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:18,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:08:18,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038448321] [2023-12-20 20:08:18,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:08:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:08:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:08:18,524 INFO L87 Difference]: Start difference. First operand 324 states and 552 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:18,799 INFO L93 Difference]: Finished difference Result 1220 states and 2079 transitions. [2023-12-20 20:08:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:08:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 797 [2023-12-20 20:08:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:18,808 INFO L225 Difference]: With dead ends: 1220 [2023-12-20 20:08:18,808 INFO L226 Difference]: Without dead ends: 897 [2023-12-20 20:08:18,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:08:18,810 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 923 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:18,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2066 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 20:08:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-20 20:08:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 888. [2023-12-20 20:08:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 573 states have (on average 1.556719022687609) internal successors, (892), 576 states have internal predecessors, (892), 310 states have call successors, (310), 4 states have call predecessors, (310), 4 states have return successors, (310), 307 states have call predecessors, (310), 310 states have call successors, (310) [2023-12-20 20:08:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1512 transitions. [2023-12-20 20:08:18,876 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1512 transitions. Word has length 797 [2023-12-20 20:08:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:18,877 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1512 transitions. [2023-12-20 20:08:18,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1512 transitions. [2023-12-20 20:08:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-12-20 20:08:18,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:18,889 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:18,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:19,096 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 [2023-12-20 20:08:19,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:19,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2042435943, now seen corresponding path program 1 times [2023-12-20 20:08:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:19,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938496442] [2023-12-20 20:08:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:19,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997056957] [2023-12-20 20:08:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:19,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:19,200 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) [2023-12-20 20:08:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 20:08:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:19,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 20:08:19,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 14960 proven. 0 refuted. 0 times theorem prover too weak. 18064 trivial. 0 not checked. [2023-12-20 20:08:20,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938496442] [2023-12-20 20:08:20,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997056957] [2023-12-20 20:08:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997056957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:20,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:20,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317660518] [2023-12-20 20:08:20,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:08:20,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:08:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:08:20,946 INFO L87 Difference]: Start difference. First operand 888 states and 1512 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-20 20:08:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:21,040 INFO L93 Difference]: Finished difference Result 2662 states and 4534 transitions. [2023-12-20 20:08:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:21,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 797 [2023-12-20 20:08:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:21,048 INFO L225 Difference]: With dead ends: 2662 [2023-12-20 20:08:21,048 INFO L226 Difference]: Without dead ends: 1775 [2023-12-20 20:08:21,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:08:21,051 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 505 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:21,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1066 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2023-12-20 20:08:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1773. [2023-12-20 20:08:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1144 states have (on average 1.5541958041958042) internal successors, (1778), 1150 states have internal predecessors, (1778), 620 states have call successors, (620), 8 states have call predecessors, (620), 8 states have return successors, (620), 614 states have call predecessors, (620), 620 states have call successors, (620) [2023-12-20 20:08:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 3018 transitions. [2023-12-20 20:08:21,255 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 3018 transitions. Word has length 797 [2023-12-20 20:08:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:21,256 INFO L495 AbstractCegarLoop]: Abstraction has 1773 states and 3018 transitions. [2023-12-20 20:08:21,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-20 20:08:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 3018 transitions. [2023-12-20 20:08:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-12-20 20:08:21,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:21,263 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:21,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:21,470 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 [2023-12-20 20:08:21,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:21,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1840612009, now seen corresponding path program 1 times [2023-12-20 20:08:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:21,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046105488] [2023-12-20 20:08:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:21,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:21,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:21,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282320901] [2023-12-20 20:08:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:21,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:21,535 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) [2023-12-20 20:08:21,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 20:08:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:21,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:21,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-20 20:08:21,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:21,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:21,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046105488] [2023-12-20 20:08:21,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:21,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282320901] [2023-12-20 20:08:21,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282320901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:21,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:21,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:21,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482573247] [2023-12-20 20:08:21,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:21,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:21,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:21,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:21,917 INFO L87 Difference]: Start difference. First operand 1773 states and 3018 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:22,046 INFO L93 Difference]: Finished difference Result 4799 states and 8190 transitions. [2023-12-20 20:08:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:22,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 797 [2023-12-20 20:08:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:22,059 INFO L225 Difference]: With dead ends: 4799 [2023-12-20 20:08:22,059 INFO L226 Difference]: Without dead ends: 3027 [2023-12-20 20:08:22,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:22,068 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 293 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:22,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1161 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2023-12-20 20:08:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 3017. [2023-12-20 20:08:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2076 states have (on average 1.5770712909441233) internal successors, (3274), 2090 states have internal predecessors, (3274), 924 states have call successors, (924), 16 states have call predecessors, (924), 16 states have return successors, (924), 910 states have call predecessors, (924), 924 states have call successors, (924) [2023-12-20 20:08:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5122 transitions. [2023-12-20 20:08:22,306 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5122 transitions. Word has length 797 [2023-12-20 20:08:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:22,306 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 5122 transitions. [2023-12-20 20:08:22,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5122 transitions. [2023-12-20 20:08:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2023-12-20 20:08:22,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:22,314 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:22,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:22,521 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 [2023-12-20 20:08:22,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:22,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 784486928, now seen corresponding path program 1 times [2023-12-20 20:08:22,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:22,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580821757] [2023-12-20 20:08:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:22,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:22,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424017130] [2023-12-20 20:08:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:22,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:22,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:22,569 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) [2023-12-20 20:08:22,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 20:08:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:22,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:22,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-20 20:08:22,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:22,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:22,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580821757] [2023-12-20 20:08:22,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:22,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424017130] [2023-12-20 20:08:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424017130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:22,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:22,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:22,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667241239] [2023-12-20 20:08:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:22,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:22,918 INFO L87 Difference]: Start difference. First operand 3017 states and 5122 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:23,126 INFO L93 Difference]: Finished difference Result 8041 states and 13510 transitions. [2023-12-20 20:08:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 798 [2023-12-20 20:08:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:23,145 INFO L225 Difference]: With dead ends: 8041 [2023-12-20 20:08:23,145 INFO L226 Difference]: Without dead ends: 5025 [2023-12-20 20:08:23,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:23,153 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 356 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:23,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1398 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2023-12-20 20:08:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 5021. [2023-12-20 20:08:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 3156 states have (on average 1.4860583016476552) internal successors, (4690), 3186 states have internal predecessors, (4690), 1832 states have call successors, (1832), 32 states have call predecessors, (1832), 32 states have return successors, (1832), 1802 states have call predecessors, (1832), 1832 states have call successors, (1832) [2023-12-20 20:08:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 8354 transitions. [2023-12-20 20:08:23,591 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 8354 transitions. Word has length 798 [2023-12-20 20:08:23,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:23,592 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 8354 transitions. [2023-12-20 20:08:23,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 8354 transitions. [2023-12-20 20:08:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2023-12-20 20:08:23,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:23,602 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:23,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 20:08:23,808 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 [2023-12-20 20:08:23,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:23,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2027306228, now seen corresponding path program 1 times [2023-12-20 20:08:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472507573] [2023-12-20 20:08:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:23,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:23,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852171811] [2023-12-20 20:08:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:23,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:23,869 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) [2023-12-20 20:08:23,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 20:08:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:24,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:24,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-20 20:08:24,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:24,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472507573] [2023-12-20 20:08:24,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852171811] [2023-12-20 20:08:24,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852171811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:24,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:24,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919064004] [2023-12-20 20:08:24,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:24,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:24,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:24,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:24,227 INFO L87 Difference]: Start difference. First operand 5021 states and 8354 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:24,568 INFO L93 Difference]: Finished difference Result 13595 states and 22436 transitions. [2023-12-20 20:08:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 798 [2023-12-20 20:08:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:24,600 INFO L225 Difference]: With dead ends: 13595 [2023-12-20 20:08:24,601 INFO L226 Difference]: Without dead ends: 8575 [2023-12-20 20:08:24,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:24,614 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 298 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:24,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1088 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2023-12-20 20:08:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 8569. [2023-12-20 20:08:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8569 states, 4928 states have (on average 1.3989448051948052) internal successors, (6894), 4990 states have internal predecessors, (6894), 3576 states have call successors, (3576), 64 states have call predecessors, (3576), 64 states have return successors, (3576), 3514 states have call predecessors, (3576), 3576 states have call successors, (3576) [2023-12-20 20:08:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 14046 transitions. [2023-12-20 20:08:25,392 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 14046 transitions. Word has length 798 [2023-12-20 20:08:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:25,392 INFO L495 AbstractCegarLoop]: Abstraction has 8569 states and 14046 transitions. [2023-12-20 20:08:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-20 20:08:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 14046 transitions. [2023-12-20 20:08:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2023-12-20 20:08:25,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:25,402 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:25,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:25,609 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 [2023-12-20 20:08:25,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:25,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash 987797390, now seen corresponding path program 1 times [2023-12-20 20:08:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263837374] [2023-12-20 20:08:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:25,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:25,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495561027] [2023-12-20 20:08:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:25,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:25,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:25,663 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) [2023-12-20 20:08:25,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 20:08:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:26,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:08:26,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 7134 proven. 45 refuted. 0 times theorem prover too weak. 25845 trivial. 0 not checked. [2023-12-20 20:08:26,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:08:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 32640 trivial. 0 not checked. [2023-12-20 20:08:26,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263837374] [2023-12-20 20:08:26,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495561027] [2023-12-20 20:08:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495561027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:08:26,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:08:26,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:08:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988151603] [2023-12-20 20:08:26,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:08:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:08:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:26,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:08:26,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:08:26,529 INFO L87 Difference]: Start difference. First operand 8569 states and 14046 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2023-12-20 20:08:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:27,539 INFO L93 Difference]: Finished difference Result 17281 states and 28231 transitions. [2023-12-20 20:08:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:08:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) Word has length 798 [2023-12-20 20:08:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:27,581 INFO L225 Difference]: With dead ends: 17281 [2023-12-20 20:08:27,582 INFO L226 Difference]: Without dead ends: 8713 [2023-12-20 20:08:27,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1598 GetRequests, 1588 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:08:27,612 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 575 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:27,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 985 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 20:08:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8713 states. [2023-12-20 20:08:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8713 to 8585. [2023-12-20 20:08:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8585 states, 4940 states have (on average 1.391497975708502) internal successors, (6874), 5002 states have internal predecessors, (6874), 3576 states have call successors, (3576), 68 states have call predecessors, (3576), 68 states have return successors, (3576), 3514 states have call predecessors, (3576), 3576 states have call successors, (3576) [2023-12-20 20:08:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8585 states to 8585 states and 14026 transitions. [2023-12-20 20:08:28,390 INFO L78 Accepts]: Start accepts. Automaton has 8585 states and 14026 transitions. Word has length 798 [2023-12-20 20:08:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:28,391 INFO L495 AbstractCegarLoop]: Abstraction has 8585 states and 14026 transitions. [2023-12-20 20:08:28,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2023-12-20 20:08:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 8585 states and 14026 transitions. [2023-12-20 20:08:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2023-12-20 20:08:28,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:28,401 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:28,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 20:08:28,607 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 [2023-12-20 20:08:28,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:28,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1010429644, now seen corresponding path program 1 times [2023-12-20 20:08:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581955701] [2023-12-20 20:08:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:28,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:28,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661196090] [2023-12-20 20:08:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:28,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:28,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:28,666 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) [2023-12-20 20:08:28,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 20:08:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:29,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 20:08:29,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 13670 proven. 273 refuted. 0 times theorem prover too weak. 19081 trivial. 0 not checked. [2023-12-20 20:08:30,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:08:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 111 proven. 273 refuted. 0 times theorem prover too weak. 32640 trivial. 0 not checked. [2023-12-20 20:08:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581955701] [2023-12-20 20:08:31,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661196090] [2023-12-20 20:08:31,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661196090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:08:31,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:08:31,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2023-12-20 20:08:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196838335] [2023-12-20 20:08:31,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:08:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 20:08:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 20:08:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-20 20:08:31,519 INFO L87 Difference]: Start difference. First operand 8585 states and 14026 transitions. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 4 states have call successors, (258), 3 states have call predecessors, (258), 5 states have return successors, (258), 4 states have call predecessors, (258), 4 states have call successors, (258) [2023-12-20 20:08:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:34,972 INFO L93 Difference]: Finished difference Result 21033 states and 33979 transitions. [2023-12-20 20:08:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-20 20:08:34,973 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 4 states have call successors, (258), 3 states have call predecessors, (258), 5 states have return successors, (258), 4 states have call predecessors, (258), 4 states have call successors, (258) Word has length 798 [2023-12-20 20:08:34,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:35,017 INFO L225 Difference]: With dead ends: 21033 [2023-12-20 20:08:35,017 INFO L226 Difference]: Without dead ends: 12387 [2023-12-20 20:08:35,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1624 GetRequests, 1589 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 20:08:35,045 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2263 mSDsluCounter, 3954 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:35,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 4748 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 3339 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 20:08:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12387 states. [2023-12-20 20:08:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12387 to 7721. [2023-12-20 20:08:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7721 states, 4684 states have (on average 1.4000853970964988) internal successors, (6558), 4730 states have internal predecessors, (6558), 2936 states have call successors, (2936), 100 states have call predecessors, (2936), 100 states have return successors, (2936), 2890 states have call predecessors, (2936), 2936 states have call successors, (2936) [2023-12-20 20:08:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7721 states to 7721 states and 12430 transitions. [2023-12-20 20:08:35,779 INFO L78 Accepts]: Start accepts. Automaton has 7721 states and 12430 transitions. Word has length 798 [2023-12-20 20:08:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:35,780 INFO L495 AbstractCegarLoop]: Abstraction has 7721 states and 12430 transitions. [2023-12-20 20:08:35,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 4 states have call successors, (258), 3 states have call predecessors, (258), 5 states have return successors, (258), 4 states have call predecessors, (258), 4 states have call successors, (258) [2023-12-20 20:08:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7721 states and 12430 transitions. [2023-12-20 20:08:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2023-12-20 20:08:35,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:35,788 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:35,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:35,996 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 [2023-12-20 20:08:35,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:35,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash -900612914, now seen corresponding path program 1 times [2023-12-20 20:08:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:35,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361805445] [2023-12-20 20:08:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:35,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:36,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:36,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620740325] [2023-12-20 20:08:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:36,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:36,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:36,074 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) [2023-12-20 20:08:36,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 20:08:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:36,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 20:08:36,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 17262 proven. 333 refuted. 0 times theorem prover too weak. 15429 trivial. 0 not checked. [2023-12-20 20:08:38,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:08:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 801 proven. 342 refuted. 0 times theorem prover too weak. 31881 trivial. 0 not checked. [2023-12-20 20:08:39,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:39,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361805445] [2023-12-20 20:08:39,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620740325] [2023-12-20 20:08:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620740325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:08:39,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:08:39,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-20 20:08:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111104592] [2023-12-20 20:08:39,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:08:39,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 20:08:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 20:08:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2023-12-20 20:08:39,962 INFO L87 Difference]: Start difference. First operand 7721 states and 12430 transitions. Second operand has 22 states, 21 states have (on average 15.380952380952381) internal successors, (323), 20 states have internal predecessors, (323), 8 states have call successors, (258), 5 states have call predecessors, (258), 10 states have return successors, (258), 8 states have call predecessors, (258), 8 states have call successors, (258) [2023-12-20 20:08:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:46,728 INFO L93 Difference]: Finished difference Result 40296 states and 64627 transitions. [2023-12-20 20:08:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 20:08:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.380952380952381) internal successors, (323), 20 states have internal predecessors, (323), 8 states have call successors, (258), 5 states have call predecessors, (258), 10 states have return successors, (258), 8 states have call predecessors, (258), 8 states have call successors, (258) Word has length 798 [2023-12-20 20:08:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:46,835 INFO L225 Difference]: With dead ends: 40296 [2023-12-20 20:08:46,835 INFO L226 Difference]: Without dead ends: 32576 [2023-12-20 20:08:46,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1619 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=613, Invalid=1193, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 20:08:46,866 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 2567 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 2192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 5772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2192 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:46,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2742 Valid, 3376 Invalid, 5772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2192 Valid, 3580 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 20:08:46,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32576 states. [2023-12-20 20:08:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32576 to 20679. [2023-12-20 20:08:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20679 states, 11806 states have (on average 1.345925800440454) internal successors, (15890), 11946 states have internal predecessors, (15890), 8544 states have call successors, (8544), 328 states have call predecessors, (8544), 328 states have return successors, (8544), 8404 states have call predecessors, (8544), 8544 states have call successors, (8544) [2023-12-20 20:08:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20679 states to 20679 states and 32978 transitions. [2023-12-20 20:08:49,666 INFO L78 Accepts]: Start accepts. Automaton has 20679 states and 32978 transitions. Word has length 798 [2023-12-20 20:08:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:49,667 INFO L495 AbstractCegarLoop]: Abstraction has 20679 states and 32978 transitions. [2023-12-20 20:08:49,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.380952380952381) internal successors, (323), 20 states have internal predecessors, (323), 8 states have call successors, (258), 5 states have call predecessors, (258), 10 states have return successors, (258), 8 states have call predecessors, (258), 8 states have call successors, (258) [2023-12-20 20:08:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 20679 states and 32978 transitions. [2023-12-20 20:08:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2023-12-20 20:08:49,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:49,679 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:49,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:49,887 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 [2023-12-20 20:08:49,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:49,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2034709658, now seen corresponding path program 1 times [2023-12-20 20:08:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962163376] [2023-12-20 20:08:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:49,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:49,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376098344] [2023-12-20 20:08:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:49,930 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) [2023-12-20 20:08:49,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 20:08:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:52,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-20 20:08:52,906 INFO L285 TraceCheckSpWp]: Computing forward predicates...