/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-60.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:50:31,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:50:31,325 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:50:31,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:50:31,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:50:31,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:50:31,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:50:31,359 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:50:31,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:50:31,363 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:50:31,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:50:31,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:50:31,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:50:31,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:50:31,365 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:50:31,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:50:31,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:50:31,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:50:31,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:50:31,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:50:31,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:50:31,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:50:31,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:50:31,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:50:31,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:50:31,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:50:31,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:50:31,369 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:50:31,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:50:31,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:50:31,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:50:31,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:50:31,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:50:31,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:50:31,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:50:31,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:50:31,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:50:31,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:50:31,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:50:31,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:50:31,371 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:50:31,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:50:31,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:50:31,372 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:50:31,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:50:31,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:50:31,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:50:31,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:50:31,560 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:50:31,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-60.i [2023-12-15 19:50:32,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:50:32,928 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:50:32,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-60.i [2023-12-15 19:50:32,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7e6966/ed4a9740450541c49ee1b055542aab7c/FLAG7e3dfb460 [2023-12-15 19:50:32,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7e6966/ed4a9740450541c49ee1b055542aab7c [2023-12-15 19:50:32,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:50:32,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:50:32,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:50:32,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:50:32,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:50:32,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:50:32" (1/1) ... [2023-12-15 19:50:32,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5886ca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:32, skipping insertion in model container [2023-12-15 19:50:32,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:50:32" (1/1) ... [2023-12-15 19:50:33,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:50:33,180 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-60.i[916,929] [2023-12-15 19:50:33,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:50:33,327 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:50:33,338 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-60.i[916,929] [2023-12-15 19:50:33,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:50:33,441 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:50:33,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33 WrapperNode [2023-12-15 19:50:33,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:50:33,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:50:33,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:50:33,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:50:33,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,583 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 576 [2023-12-15 19:50:33,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:50:33,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:50:33,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:50:33,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:50:33,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,649 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:50:33,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:50:33,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:50:33,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:50:33,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:50:33,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (1/1) ... [2023-12-15 19:50:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:50:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:33,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:50:33,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:50:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:50:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:50:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:50:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:50:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:50:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:50:33,918 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:50:33,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:50:34,593 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:50:34,644 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:50:34,644 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:50:34,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:50:34 BoogieIcfgContainer [2023-12-15 19:50:34,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:50:34,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:50:34,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:50:34,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:50:34,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:50:32" (1/3) ... [2023-12-15 19:50:34,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9437ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:50:34, skipping insertion in model container [2023-12-15 19:50:34,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:33" (2/3) ... [2023-12-15 19:50:34,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9437ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:50:34, skipping insertion in model container [2023-12-15 19:50:34,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:50:34" (3/3) ... [2023-12-15 19:50:34,653 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-60.i [2023-12-15 19:50:34,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:50:34,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:50:34,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:50:34,733 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;@7e8a9914, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:50:34,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:50:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 139 states have (on average 1.5827338129496402) internal successors, (220), 140 states have internal predecessors, (220), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-15 19:50:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-15 19:50:34,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:34,791 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:34,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:34,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1112570740, now seen corresponding path program 1 times [2023-12-15 19:50:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:34,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618017337] [2023-12-15 19:50:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:34,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:35,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618017337] [2023-12-15 19:50:35,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:50:35,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864628076] [2023-12-15 19:50:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:35,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:35,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:35,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:50:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:35,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:50:35,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2023-12-15 19:50:35,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:35,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864628076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:35,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:35,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:50:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55366514] [2023-12-15 19:50:35,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:50:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:50:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:50:35,581 INFO L87 Difference]: Start difference. First operand has 223 states, 139 states have (on average 1.5827338129496402) internal successors, (220), 140 states have internal predecessors, (220), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-15 19:50:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:35,668 INFO L93 Difference]: Finished difference Result 443 states and 843 transitions. [2023-12-15 19:50:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:50:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) Word has length 496 [2023-12-15 19:50:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:35,680 INFO L225 Difference]: With dead ends: 443 [2023-12-15 19:50:35,680 INFO L226 Difference]: Without dead ends: 221 [2023-12-15 19:50:35,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:50:35,690 INFO L413 NwaCegarLoop]: 372 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, 372 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:35,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-15 19:50:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2023-12-15 19:50:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 138 states have internal predecessors, (213), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-15 19:50:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 375 transitions. [2023-12-15 19:50:35,769 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 375 transitions. Word has length 496 [2023-12-15 19:50:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:35,770 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 375 transitions. [2023-12-15 19:50:35,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-15 19:50:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 375 transitions. [2023-12-15 19:50:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-15 19:50:35,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:35,784 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:35,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:50:35,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:35,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash 123209342, now seen corresponding path program 1 times [2023-12-15 19:50:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:35,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068417308] [2023-12-15 19:50:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:36,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:36,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148633266] [2023-12-15 19:50:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:36,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:36,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:36,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:36,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:50:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:36,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:36,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-15 19:50:36,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068417308] [2023-12-15 19:50:36,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148633266] [2023-12-15 19:50:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148633266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:36,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:36,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407108986] [2023-12-15 19:50:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:36,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:36,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:36,572 INFO L87 Difference]: Start difference. First operand 221 states and 375 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:36,656 INFO L93 Difference]: Finished difference Result 582 states and 987 transitions. [2023-12-15 19:50:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 496 [2023-12-15 19:50:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:36,665 INFO L225 Difference]: With dead ends: 582 [2023-12-15 19:50:36,665 INFO L226 Difference]: Without dead ends: 362 [2023-12-15 19:50:36,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:36,669 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 235 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:36,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 869 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-15 19:50:36,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 359. [2023-12-15 19:50:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 222 states have (on average 1.5405405405405406) internal successors, (342), 223 states have internal predecessors, (342), 134 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (134), 133 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-15 19:50:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 610 transitions. [2023-12-15 19:50:36,732 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 610 transitions. Word has length 496 [2023-12-15 19:50:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:36,734 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 610 transitions. [2023-12-15 19:50:36,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 610 transitions. [2023-12-15 19:50:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-15 19:50:36,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:36,739 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:36,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:36,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:50:36,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:36,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash -386263748, now seen corresponding path program 1 times [2023-12-15 19:50:36,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247123593] [2023-12-15 19:50:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:36,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:37,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:37,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156702260] [2023-12-15 19:50:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:37,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:37,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:37,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:50:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:37,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:37,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-15 19:50:37,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247123593] [2023-12-15 19:50:37,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156702260] [2023-12-15 19:50:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156702260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:37,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:37,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604120079] [2023-12-15 19:50:37,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:37,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:37,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:37,408 INFO L87 Difference]: Start difference. First operand 359 states and 610 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:37,463 INFO L93 Difference]: Finished difference Result 781 states and 1316 transitions. [2023-12-15 19:50:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 496 [2023-12-15 19:50:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:37,469 INFO L225 Difference]: With dead ends: 781 [2023-12-15 19:50:37,470 INFO L226 Difference]: Without dead ends: 423 [2023-12-15 19:50:37,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:37,474 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 48 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:37,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 781 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-15 19:50:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2023-12-15 19:50:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 256 states have (on average 1.5078125) internal successors, (386), 259 states have internal predecessors, (386), 158 states have call successors, (158), 4 states have call predecessors, (158), 4 states have return successors, (158), 155 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-15 19:50:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 702 transitions. [2023-12-15 19:50:37,535 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 702 transitions. Word has length 496 [2023-12-15 19:50:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:37,539 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 702 transitions. [2023-12-15 19:50:37,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 702 transitions. [2023-12-15 19:50:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-15 19:50:37,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:37,544 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:37,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:37,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:37,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:37,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash -105060131, now seen corresponding path program 1 times [2023-12-15 19:50:37,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:37,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338464528] [2023-12-15 19:50:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:37,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:37,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:37,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351299556] [2023-12-15 19:50:37,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:37,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:37,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:37,816 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:37,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:50:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:38,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:38,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-15 19:50:38,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:38,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:38,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338464528] [2023-12-15 19:50:38,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:38,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351299556] [2023-12-15 19:50:38,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351299556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:38,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:38,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717219632] [2023-12-15 19:50:38,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:38,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:38,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:38,148 INFO L87 Difference]: Start difference. First operand 419 states and 702 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:38,210 INFO L93 Difference]: Finished difference Result 871 states and 1454 transitions. [2023-12-15 19:50:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:38,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 497 [2023-12-15 19:50:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:38,214 INFO L225 Difference]: With dead ends: 871 [2023-12-15 19:50:38,214 INFO L226 Difference]: Without dead ends: 453 [2023-12-15 19:50:38,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:38,218 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 12 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 737 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 [2023-12-15 19:50:38,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 737 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-12-15 19:50:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 435. [2023-12-15 19:50:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 272 states have (on average 1.5) internal successors, (408), 275 states have internal predecessors, (408), 158 states have call successors, (158), 4 states have call predecessors, (158), 4 states have return successors, (158), 155 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-15 19:50:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 724 transitions. [2023-12-15 19:50:38,253 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 724 transitions. Word has length 497 [2023-12-15 19:50:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 724 transitions. [2023-12-15 19:50:38,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 724 transitions. [2023-12-15 19:50:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-15 19:50:38,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:38,257 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:38,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:38,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:38,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:38,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1669947231, now seen corresponding path program 1 times [2023-12-15 19:50:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:38,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872381258] [2023-12-15 19:50:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:38,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036434280] [2023-12-15 19:50:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:38,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:38,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:38,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:38,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:50:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:38,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:50:38,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 2778 proven. 27 refuted. 0 times theorem prover too weak. 10155 trivial. 0 not checked. [2023-12-15 19:50:38,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 213 proven. 27 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-15 19:50:39,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:39,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872381258] [2023-12-15 19:50:39,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:39,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036434280] [2023-12-15 19:50:39,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036434280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:39,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:39,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 19:50:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512906244] [2023-12-15 19:50:39,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:39,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:50:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:50:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:50:39,186 INFO L87 Difference]: Start difference. First operand 435 states and 724 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 3 states have call successors, (90), 2 states have call predecessors, (90), 4 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) [2023-12-15 19:50:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:39,684 INFO L93 Difference]: Finished difference Result 881 states and 1458 transitions. [2023-12-15 19:50:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:50:39,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 3 states have call successors, (90), 2 states have call predecessors, (90), 4 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) Word has length 497 [2023-12-15 19:50:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:39,689 INFO L225 Difference]: With dead ends: 881 [2023-12-15 19:50:39,689 INFO L226 Difference]: Without dead ends: 447 [2023-12-15 19:50:39,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:50:39,691 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 437 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:39,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 685 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:50:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-15 19:50:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 439. [2023-12-15 19:50:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 275 states have (on average 1.4872727272727273) internal successors, (409), 278 states have internal predecessors, (409), 158 states have call successors, (158), 5 states have call predecessors, (158), 5 states have return successors, (158), 155 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-15 19:50:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 725 transitions. [2023-12-15 19:50:39,728 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 725 transitions. Word has length 497 [2023-12-15 19:50:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:39,730 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 725 transitions. [2023-12-15 19:50:39,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 3 states have call successors, (90), 2 states have call predecessors, (90), 4 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) [2023-12-15 19:50:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 725 transitions. [2023-12-15 19:50:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-15 19:50:39,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:39,734 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:39,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:39,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:39,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2092649057, now seen corresponding path program 1 times [2023-12-15 19:50:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:39,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067726196] [2023-12-15 19:50:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:39,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:39,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:39,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844357869] [2023-12-15 19:50:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:39,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:40,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:50:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:40,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:50:40,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 5568 proven. 72 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-12-15 19:50:40,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 168 proven. 72 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-15 19:50:40,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067726196] [2023-12-15 19:50:40,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844357869] [2023-12-15 19:50:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844357869] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:40,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:50:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89050315] [2023-12-15 19:50:40,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:50:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:50:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:50:40,789 INFO L87 Difference]: Start difference. First operand 439 states and 725 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-15 19:50:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:41,320 INFO L93 Difference]: Finished difference Result 889 states and 1458 transitions. [2023-12-15 19:50:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:50:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 497 [2023-12-15 19:50:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:41,325 INFO L225 Difference]: With dead ends: 889 [2023-12-15 19:50:41,325 INFO L226 Difference]: Without dead ends: 451 [2023-12-15 19:50:41,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 986 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:50:41,328 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 588 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:41,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 667 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:50:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-15 19:50:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 441. [2023-12-15 19:50:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 276 states have (on average 1.463768115942029) internal successors, (404), 279 states have internal predecessors, (404), 158 states have call successors, (158), 6 states have call predecessors, (158), 6 states have return successors, (158), 155 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-15 19:50:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 720 transitions. [2023-12-15 19:50:41,371 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 720 transitions. Word has length 497 [2023-12-15 19:50:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:41,371 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 720 transitions. [2023-12-15 19:50:41,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-15 19:50:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 720 transitions. [2023-12-15 19:50:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-12-15 19:50:41,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:41,374 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:41,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:41,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:41,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:41,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:41,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1350517056, now seen corresponding path program 1 times [2023-12-15 19:50:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:41,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952120809] [2023-12-15 19:50:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:41,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:41,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415254039] [2023-12-15 19:50:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:41,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:41,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:41,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:41,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:50:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:41,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:50:41,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-15 19:50:42,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:42,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:42,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952120809] [2023-12-15 19:50:42,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:42,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415254039] [2023-12-15 19:50:42,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415254039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:42,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:50:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309558646] [2023-12-15 19:50:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:42,474 INFO L87 Difference]: Start difference. First operand 441 states and 720 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:42,568 INFO L93 Difference]: Finished difference Result 1321 states and 2158 transitions. [2023-12-15 19:50:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 498 [2023-12-15 19:50:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:42,575 INFO L225 Difference]: With dead ends: 1321 [2023-12-15 19:50:42,575 INFO L226 Difference]: Without dead ends: 881 [2023-12-15 19:50:42,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:42,579 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 143 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:42,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 720 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-15 19:50:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 878. [2023-12-15 19:50:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 549 states have (on average 1.4608378870673953) internal successors, (802), 555 states have internal predecessors, (802), 316 states have call successors, (316), 12 states have call predecessors, (316), 12 states have return successors, (316), 310 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-15 19:50:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1434 transitions. [2023-12-15 19:50:42,712 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1434 transitions. Word has length 498 [2023-12-15 19:50:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:42,712 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1434 transitions. [2023-12-15 19:50:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-15 19:50:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1434 transitions. [2023-12-15 19:50:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-12-15 19:50:42,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:42,716 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:42,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:42,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:42,925 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:42,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1915090942, now seen corresponding path program 1 times [2023-12-15 19:50:42,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:42,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48008112] [2023-12-15 19:50:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:42,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:42,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:42,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204368604] [2023-12-15 19:50:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:42,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:42,971 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:42,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:50:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:43,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-15 19:50:43,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 9505 proven. 501 refuted. 0 times theorem prover too weak. 2954 trivial. 0 not checked. [2023-12-15 19:50:47,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:06,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48008112] [2023-12-15 19:51:06,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204368604] [2023-12-15 19:51:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204368604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:51:06,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:51:06,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-12-15 19:51:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590561496] [2023-12-15 19:51:06,317 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 19:51:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 19:51:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 19:51:06,319 INFO L87 Difference]: Start difference. First operand 878 states and 1434 transitions. Second operand has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 7 states have call successors, (81), 7 states have call predecessors, (81), 12 states have return successors, (81), 7 states have call predecessors, (81), 7 states have call successors, (81) [2023-12-15 19:51:18,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:51:24,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:51:29,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:51:35,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-15 19:51:38,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:51:38,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:51:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-15 19:51:38,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=509, Invalid=2143, Unknown=0, NotChecked=0, Total=2652 [2023-12-15 19:51:38,136 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1818 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 191 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:38,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 1714 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2907 Invalid, 3 Unknown, 0 Unchecked, 24.6s Time] [2023-12-15 19:51:38,137 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:51:38,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:51:38,345 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (878states) and FLOYD_HOARE automaton (currently 34 states, 25 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 52 known predicates. [2023-12-15 19:51:38,349 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:38,351 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:51:38,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:51:38 BoogieIcfgContainer [2023-12-15 19:51:38,356 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:51:38,357 INFO L158 Benchmark]: Toolchain (without parser) took 65393.51ms. Allocated memory was 253.8MB in the beginning and 551.6MB in the end (delta: 297.8MB). Free memory was 202.9MB in the beginning and 231.9MB in the end (delta: -29.0MB). Peak memory consumption was 269.6MB. Max. memory is 8.0GB. [2023-12-15 19:51:38,357 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 198.2MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:51:38,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.09ms. Allocated memory is still 253.8MB. Free memory was 202.6MB in the beginning and 176.3MB in the end (delta: 26.3MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 19:51:38,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.93ms. Allocated memory is still 253.8MB. Free memory was 176.3MB in the beginning and 214.0MB in the end (delta: -37.7MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. [2023-12-15 19:51:38,358 INFO L158 Benchmark]: Boogie Preprocessor took 119.68ms. Allocated memory is still 253.8MB. Free memory was 214.0MB in the beginning and 197.8MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 19:51:38,358 INFO L158 Benchmark]: RCFGBuilder took 939.27ms. Allocated memory is still 253.8MB. Free memory was 197.8MB in the beginning and 130.7MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. [2023-12-15 19:51:38,358 INFO L158 Benchmark]: TraceAbstraction took 63709.73ms. Allocated memory was 253.8MB in the beginning and 551.6MB in the end (delta: 297.8MB). Free memory was 130.1MB in the beginning and 231.9MB in the end (delta: -101.7MB). Peak memory consumption was 196.1MB. Max. memory is 8.0GB. [2023-12-15 19:51:38,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 198.2MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 475.09ms. Allocated memory is still 253.8MB. Free memory was 202.6MB in the beginning and 176.3MB in the end (delta: 26.3MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 141.93ms. Allocated memory is still 253.8MB. Free memory was 176.3MB in the beginning and 214.0MB in the end (delta: -37.7MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 119.68ms. Allocated memory is still 253.8MB. Free memory was 214.0MB in the beginning and 197.8MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 939.27ms. Allocated memory is still 253.8MB. Free memory was 197.8MB in the beginning and 130.7MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. * TraceAbstraction took 63709.73ms. Allocated memory was 253.8MB in the beginning and 551.6MB in the end (delta: 297.8MB). Free memory was 130.1MB in the beginning and 231.9MB in the end (delta: -101.7MB). Peak memory consumption was 196.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (878states) and FLOYD_HOARE automaton (currently 34 states, 25 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 52 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.6s, OverallIterations: 8, TraceHistogramMax: 81, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 33.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 3407 SdHoareTripleChecker+Valid, 25.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3281 mSDsluCounter, 6545 SdHoareTripleChecker+Invalid, 24.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3743 mSDsCounter, 586 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3808 IncrementalHoareTripleChecker+Invalid, 4397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 586 mSolverCounterUnsat, 2802 mSDtfsCounter, 3808 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5249 GetRequests, 5174 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=878occurred in iteration=7, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 4471 NumberOfCodeBlocks, 4471 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4959 ConstructedInterpolants, 13 QuantifiedInterpolants, 15305 SizeOfPredicates, 27 NumberOfNonLiveVariables, 8739 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 128901/129600 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown