/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-60.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 00:01:39,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 00:01:39,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 00:01:39,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 00:01:39,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 00:01:39,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 00:01:39,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 00:01:39,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 00:01:39,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 00:01:39,645 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 00:01:39,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 00:01:39,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 00:01:39,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 00:01:39,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 00:01:39,647 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 00:01:39,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 00:01:39,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 00:01:39,648 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 00:01:39,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 00:01:39,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 00:01:39,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 00:01:39,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 00:01:39,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 00:01:39,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 00:01:39,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 00:01:39,649 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 00:01:39,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 00:01:39,650 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 00:01:39,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 00:01:39,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 00:01:39,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 00:01:39,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 00:01:39,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:01:39,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 00:01:39,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 00:01:39,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 00:01:39,652 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 00:01:39,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 00:01:39,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 00:01:39,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 00:01:39,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 00:01:39,905 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 00:01:39,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-60.i [2023-12-21 00:01:41,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 00:01:41,835 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 00:01:41,836 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-60.i [2023-12-21 00:01:41,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3bb69b73/4d4a6852ab66456493853c3a32a5c91d/FLAG324a51a5a [2023-12-21 00:01:41,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3bb69b73/4d4a6852ab66456493853c3a32a5c91d [2023-12-21 00:01:41,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 00:01:41,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 00:01:41,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 00:01:41,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 00:01:41,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 00:01:41,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:01:41" (1/1) ... [2023-12-21 00:01:41,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f012a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:41, skipping insertion in model container [2023-12-21 00:01:41,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:01:41" (1/1) ... [2023-12-21 00:01:41,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 00:01:42,160 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_operatoramount_amount250_file-60.i[916,929] [2023-12-21 00:01:42,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:01:42,413 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 00:01:42,432 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_operatoramount_amount250_file-60.i[916,929] [2023-12-21 00:01:42,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:01:42,534 INFO L206 MainTranslator]: Completed translation [2023-12-21 00:01:42,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42 WrapperNode [2023-12-21 00:01:42,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 00:01:42,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 00:01:42,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 00:01:42,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 00:01:42,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,642 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 424 [2023-12-21 00:01:42,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 00:01:42,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 00:01:42,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 00:01:42,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 00:01:42,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,740 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]. [2023-12-21 00:01:42,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 00:01:42,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 00:01:42,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 00:01:42,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 00:01:42,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (1/1) ... [2023-12-21 00:01:42,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:01:42,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:42,865 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) [2023-12-21 00:01:42,910 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 [2023-12-21 00:01:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 00:01:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 00:01:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 00:01:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 00:01:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 00:01:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 00:01:43,051 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 00:01:43,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 00:01:43,730 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 00:01:43,813 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 00:01:43,813 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 00:01:43,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:01:43 BoogieIcfgContainer [2023-12-21 00:01:43,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 00:01:43,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 00:01:43,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 00:01:43,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 00:01:43,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:01:41" (1/3) ... [2023-12-21 00:01:43,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353638c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:01:43, skipping insertion in model container [2023-12-21 00:01:43,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:01:42" (2/3) ... [2023-12-21 00:01:43,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353638c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:01:43, skipping insertion in model container [2023-12-21 00:01:43,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:01:43" (3/3) ... [2023-12-21 00:01:43,822 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-60.i [2023-12-21 00:01:43,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 00:01:43,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 00:01:43,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 00:01:43,903 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;@1292ea10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 00:01:43,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 00:01:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 107 states have (on average 1.4579439252336448) internal successors, (156), 108 states have internal predecessors, (156), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 00:01:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:43,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:43,956 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:43,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:43,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash 90624937, now seen corresponding path program 1 times [2023-12-21 00:01:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188674433] [2023-12-21 00:01:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:44,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204606350] [2023-12-21 00:01:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:44,242 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) [2023-12-21 00:01:44,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 00:01:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:01:44,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 00:01:44,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:01:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2023-12-21 00:01:45,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:01:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:01:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188674433] [2023-12-21 00:01:45,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:01:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204606350] [2023-12-21 00:01:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204606350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:01:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:01:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 00:01:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977163293] [2023-12-21 00:01:45,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:01:45,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 00:01:45,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:01:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 00:01:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:01:45,130 INFO L87 Difference]: Start difference. First operand has 174 states, 107 states have (on average 1.4579439252336448) internal successors, (156), 108 states have internal predecessors, (156), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) [2023-12-21 00:01:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:01:45,491 INFO L93 Difference]: Finished difference Result 723 states and 1385 transitions. [2023-12-21 00:01:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 00:01:45,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) Word has length 402 [2023-12-21 00:01:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:01:45,513 INFO L225 Difference]: With dead ends: 723 [2023-12-21 00:01:45,513 INFO L226 Difference]: Without dead ends: 550 [2023-12-21 00:01:45,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-21 00:01:45,525 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 630 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:01:45,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1817 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:01:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-21 00:01:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 283. [2023-12-21 00:01:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 152 states have (on average 1.2960526315789473) internal successors, (197), 152 states have internal predecessors, (197), 128 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-21 00:01:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 453 transitions. [2023-12-21 00:01:45,663 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 453 transitions. Word has length 402 [2023-12-21 00:01:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:01:45,666 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 453 transitions. [2023-12-21 00:01:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) [2023-12-21 00:01:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 453 transitions. [2023-12-21 00:01:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:45,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:45,673 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:45,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 00:01:45,881 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 [2023-12-21 00:01:45,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:45,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:45,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1903519769, now seen corresponding path program 1 times [2023-12-21 00:01:45,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:45,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892350508] [2023-12-21 00:01:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:45,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:45,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310208995] [2023-12-21 00:01:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:45,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:45,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:46,008 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) [2023-12-21 00:01:46,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 00:01:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:01:46,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:01:46,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:01:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 3543 proven. 129 refuted. 0 times theorem prover too weak. 4392 trivial. 0 not checked. [2023-12-21 00:01:46,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:01:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 60 proven. 129 refuted. 0 times theorem prover too weak. 7875 trivial. 0 not checked. [2023-12-21 00:01:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:01:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892350508] [2023-12-21 00:01:46,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:01:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310208995] [2023-12-21 00:01:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310208995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:01:46,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:01:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 00:01:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960094616] [2023-12-21 00:01:46,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:01:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:01:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:01:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:01:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:01:46,878 INFO L87 Difference]: Start difference. First operand 283 states and 453 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-21 00:01:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:01:47,181 INFO L93 Difference]: Finished difference Result 472 states and 747 transitions. [2023-12-21 00:01:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:01:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 402 [2023-12-21 00:01:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:01:47,186 INFO L225 Difference]: With dead ends: 472 [2023-12-21 00:01:47,186 INFO L226 Difference]: Without dead ends: 299 [2023-12-21 00:01:47,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 796 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:01:47,189 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 132 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:01:47,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 484 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:01:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-21 00:01:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 291. [2023-12-21 00:01:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 158 states have (on average 1.2784810126582278) internal successors, (202), 158 states have internal predecessors, (202), 128 states have call successors, (128), 4 states have call predecessors, (128), 4 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-21 00:01:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 458 transitions. [2023-12-21 00:01:47,237 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 458 transitions. Word has length 402 [2023-12-21 00:01:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:01:47,238 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 458 transitions. [2023-12-21 00:01:47,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-21 00:01:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 458 transitions. [2023-12-21 00:01:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:47,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:47,243 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:47,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 00:01:47,448 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 [2023-12-21 00:01:47,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:47,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 19708265, now seen corresponding path program 1 times [2023-12-21 00:01:47,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:47,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538653972] [2023-12-21 00:01:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:47,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:47,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310239587] [2023-12-21 00:01:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:47,569 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) [2023-12-21 00:01:47,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 00:01:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:01:48,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:01:48,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:01:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 2455 proven. 33 refuted. 0 times theorem prover too weak. 5576 trivial. 0 not checked. [2023-12-21 00:01:48,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:01:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 156 proven. 33 refuted. 0 times theorem prover too weak. 7875 trivial. 0 not checked. [2023-12-21 00:01:48,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:01:48,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538653972] [2023-12-21 00:01:48,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:01:48,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310239587] [2023-12-21 00:01:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310239587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:01:48,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:01:48,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 00:01:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832376848] [2023-12-21 00:01:48,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:01:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 00:01:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:01:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 00:01:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 00:01:48,535 INFO L87 Difference]: Start difference. First operand 291 states and 458 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2023-12-21 00:01:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:01:48,962 INFO L93 Difference]: Finished difference Result 483 states and 752 transitions. [2023-12-21 00:01:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:01:48,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 402 [2023-12-21 00:01:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:01:48,980 INFO L225 Difference]: With dead ends: 483 [2023-12-21 00:01:48,980 INFO L226 Difference]: Without dead ends: 306 [2023-12-21 00:01:48,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-21 00:01:48,982 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 445 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:01:48,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 613 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:01:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-21 00:01:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 298. [2023-12-21 00:01:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 163 states have (on average 1.2576687116564418) internal successors, (205), 163 states have internal predecessors, (205), 128 states have call successors, (128), 6 states have call predecessors, (128), 6 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-21 00:01:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 461 transitions. [2023-12-21 00:01:49,068 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 461 transitions. Word has length 402 [2023-12-21 00:01:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:01:49,085 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 461 transitions. [2023-12-21 00:01:49,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2023-12-21 00:01:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 461 transitions. [2023-12-21 00:01:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:49,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:49,094 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:49,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 00:01:49,302 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 [2023-12-21 00:01:49,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:49,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1277810905, now seen corresponding path program 1 times [2023-12-21 00:01:49,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:49,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149318633] [2023-12-21 00:01:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:49,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:49,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:49,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447328382] [2023-12-21 00:01:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:49,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:49,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:49,432 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) [2023-12-21 00:01:49,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 00:01:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:01:50,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 00:01:50,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:01:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 63 proven. 189 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-21 00:01:53,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:01:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:01:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149318633] [2023-12-21 00:01:53,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:01:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447328382] [2023-12-21 00:01:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447328382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 00:01:53,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 00:01:53,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-21 00:01:53,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729341219] [2023-12-21 00:01:53,462 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 00:01:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 00:01:53,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:01:53,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 00:01:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-21 00:01:53,464 INFO L87 Difference]: Start difference. First operand 298 states and 461 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 1 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-21 00:01:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:01:54,262 INFO L93 Difference]: Finished difference Result 549 states and 852 transitions. [2023-12-21 00:01:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 00:01:54,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 1 states have call predecessors, (64), 2 states have call successors, (64) Word has length 402 [2023-12-21 00:01:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:01:54,266 INFO L225 Difference]: With dead ends: 549 [2023-12-21 00:01:54,266 INFO L226 Difference]: Without dead ends: 369 [2023-12-21 00:01:54,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2023-12-21 00:01:54,272 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 229 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:01:54,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1588 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 00:01:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-21 00:01:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 307. [2023-12-21 00:01:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 171 states have (on average 1.2573099415204678) internal successors, (215), 171 states have internal predecessors, (215), 128 states have call successors, (128), 7 states have call predecessors, (128), 7 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-21 00:01:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 471 transitions. [2023-12-21 00:01:54,318 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 471 transitions. Word has length 402 [2023-12-21 00:01:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:01:54,319 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 471 transitions. [2023-12-21 00:01:54,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 1 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-21 00:01:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 471 transitions. [2023-12-21 00:01:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:54,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:54,327 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:54,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 00:01:54,536 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 [2023-12-21 00:01:54,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:54,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1672177691, now seen corresponding path program 1 times [2023-12-21 00:01:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533354514] [2023-12-21 00:01:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:54,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:54,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927777291] [2023-12-21 00:01:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:54,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:54,606 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) [2023-12-21 00:01:54,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 00:01:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:01:54,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:01:54,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:01:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2023-12-21 00:01:55,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:01:55,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:01:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533354514] [2023-12-21 00:01:55,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:01:55,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927777291] [2023-12-21 00:01:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927777291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:01:55,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:01:55,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:01:55,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643392735] [2023-12-21 00:01:55,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:01:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 00:01:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:01:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 00:01:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:01:55,736 INFO L87 Difference]: Start difference. First operand 307 states and 471 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) [2023-12-21 00:01:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:01:56,352 INFO L93 Difference]: Finished difference Result 725 states and 1129 transitions. [2023-12-21 00:01:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:01:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) Word has length 402 [2023-12-21 00:01:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:01:56,369 INFO L225 Difference]: With dead ends: 725 [2023-12-21 00:01:56,369 INFO L226 Difference]: Without dead ends: 545 [2023-12-21 00:01:56,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:01:56,370 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 504 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:01:56,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 801 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 00:01:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-12-21 00:01:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 485. [2023-12-21 00:01:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 282 states have (on average 1.301418439716312) internal successors, (367), 282 states have internal predecessors, (367), 192 states have call successors, (192), 10 states have call predecessors, (192), 10 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-21 00:01:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 751 transitions. [2023-12-21 00:01:56,463 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 751 transitions. Word has length 402 [2023-12-21 00:01:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:01:56,463 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 751 transitions. [2023-12-21 00:01:56,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) [2023-12-21 00:01:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 751 transitions. [2023-12-21 00:01:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:56,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:56,479 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:56,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 00:01:56,687 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 [2023-12-21 00:01:56,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:56,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1778784103, now seen corresponding path program 1 times [2023-12-21 00:01:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:56,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413570660] [2023-12-21 00:01:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:56,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:56,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796954679] [2023-12-21 00:01:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:56,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:56,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:56,760 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) [2023-12-21 00:01:56,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 00:01:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:01:57,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 00:01:57,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:01:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 5269 proven. 180 refuted. 0 times theorem prover too weak. 2615 trivial. 0 not checked. [2023-12-21 00:01:58,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:01:58,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:01:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413570660] [2023-12-21 00:01:58,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:01:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796954679] [2023-12-21 00:01:58,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796954679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 00:01:58,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 00:01:58,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-21 00:01:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189864360] [2023-12-21 00:01:58,850 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 00:01:58,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 00:01:58,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:01:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 00:01:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 00:01:58,851 INFO L87 Difference]: Start difference. First operand 485 states and 751 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-21 00:01:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:01:59,351 INFO L93 Difference]: Finished difference Result 917 states and 1421 transitions. [2023-12-21 00:01:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 00:01:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 402 [2023-12-21 00:01:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:01:59,354 INFO L225 Difference]: With dead ends: 917 [2023-12-21 00:01:59,354 INFO L226 Difference]: Without dead ends: 555 [2023-12-21 00:01:59,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2023-12-21 00:01:59,368 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 203 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 00:01:59,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1618 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 00:01:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-21 00:01:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 493. [2023-12-21 00:01:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 288 states have (on average 1.2916666666666667) internal successors, (372), 288 states have internal predecessors, (372), 192 states have call successors, (192), 12 states have call predecessors, (192), 12 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-21 00:01:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2023-12-21 00:01:59,459 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 402 [2023-12-21 00:01:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:01:59,459 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2023-12-21 00:01:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-21 00:01:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2023-12-21 00:01:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-21 00:01:59,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:01:59,463 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:01:59,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 00:01:59,691 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 [2023-12-21 00:01:59,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:01:59,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:01:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash 406976805, now seen corresponding path program 1 times [2023-12-21 00:01:59,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:01:59,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702415350] [2023-12-21 00:01:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:01:59,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:01:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556869789] [2023-12-21 00:01:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:01:59,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:01:59,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:01:59,769 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) [2023-12-21 00:01:59,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 00:16:25,137 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 [2023-12-21 00:16:25,137 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 00:16:26,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 00:16:26,347 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-21 00:16:26,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-12-21 00:16:26,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 00:16:26,367 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 00:16:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 00:16:26,367 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 403 with TraceHistMax 64,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-21 00:16:26,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:16:26,371 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 00:16:26,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:16:26 BoogieIcfgContainer [2023-12-21 00:16:26,375 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 00:16:26,376 INFO L158 Benchmark]: Toolchain (without parser) took 884502.15ms. Allocated memory was 154.1MB in the beginning and 412.1MB in the end (delta: 257.9MB). Free memory was 98.4MB in the beginning and 302.2MB in the end (delta: -203.8MB). Peak memory consumption was 55.4MB. Max. memory is 8.0GB. [2023-12-21 00:16:26,376 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 154.1MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 00:16:26,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 660.56ms. Allocated memory is still 154.1MB. Free memory was 98.4MB in the beginning and 73.6MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-21 00:16:26,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.85ms. Allocated memory is still 154.1MB. Free memory was 73.6MB in the beginning and 63.8MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-21 00:16:26,384 INFO L158 Benchmark]: Boogie Preprocessor took 186.10ms. Allocated memory was 154.1MB in the beginning and 210.8MB in the end (delta: 56.6MB). Free memory was 63.8MB in the beginning and 166.6MB in the end (delta: -102.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 00:16:26,385 INFO L158 Benchmark]: RCFGBuilder took 983.66ms. Allocated memory is still 210.8MB. Free memory was 166.6MB in the beginning and 106.4MB in the end (delta: 60.3MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-21 00:16:26,385 INFO L158 Benchmark]: TraceAbstraction took 882559.43ms. Allocated memory was 210.8MB in the beginning and 412.1MB in the end (delta: 201.3MB). Free memory was 105.8MB in the beginning and 302.2MB in the end (delta: -196.3MB). Peak memory consumption was 5.0MB. Max. memory is 8.0GB. [2023-12-21 00:16:26,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 154.1MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 660.56ms. Allocated memory is still 154.1MB. Free memory was 98.4MB in the beginning and 73.6MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 106.85ms. Allocated memory is still 154.1MB. Free memory was 73.6MB in the beginning and 63.8MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 186.10ms. Allocated memory was 154.1MB in the beginning and 210.8MB in the end (delta: 56.6MB). Free memory was 63.8MB in the beginning and 166.6MB in the end (delta: -102.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * RCFGBuilder took 983.66ms. Allocated memory is still 210.8MB. Free memory was 166.6MB in the beginning and 106.4MB in the end (delta: 60.3MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * TraceAbstraction took 882559.43ms. Allocated memory was 210.8MB in the beginning and 412.1MB in the end (delta: 201.3MB). Free memory was 105.8MB in the beginning and 302.2MB in the end (delta: -196.3MB). Peak memory consumption was 5.0MB. 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 analyzing trace of length 403 with TraceHistMax 64,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 174 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.5s, OverallIterations: 7, TraceHistogramMax: 64, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2214 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2143 mSDsluCounter, 6921 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5367 mSDsCounter, 717 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2310 IncrementalHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 717 mSolverCounterUnsat, 1554 mSDtfsCounter, 2310 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3454 GetRequests, 3378 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=493occurred in iteration=6, InterpolantAutomatonStates: 57, 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, 6 MinimizatonAttempts, 467 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 2412 NumberOfCodeBlocks, 2412 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 3208 ConstructedInterpolants, 0 QuantifiedInterpolants, 15759 SizeOfPredicates, 30 NumberOfNonLiveVariables, 5467 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 63819/64512 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