/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-17.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 23:41:07,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 23:41:07,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 23:41:07,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 23:41:07,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 23:41:07,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 23:41:07,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 23:41:07,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 23:41:07,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 23:41:07,489 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 23:41:07,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 23:41:07,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 23:41:07,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 23:41:07,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 23:41:07,490 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 23:41:07,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 23:41:07,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 23:41:07,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 23:41:07,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 23:41:07,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 23:41:07,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 23:41:07,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 23:41:07,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 23:41:07,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 23:41:07,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 23:41:07,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 23:41:07,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 23:41:07,501 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 23:41:07,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 23:41:07,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 23:41:07,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 23:41:07,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 23:41:07,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:41:07,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 23:41:07,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 23:41:07,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 23:41:07,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 23:41:07,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 23:41:07,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 23:41:07,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 23:41:07,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 23:41:07,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 23:41:07,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 23:41:07,508 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 23:41:07,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 23:41:07,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 23:41:07,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 23:41:07,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 23:41:07,699 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 23:41:07,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-17.i [2023-12-20 23:41:08,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 23:41:09,223 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 23:41:09,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-17.i [2023-12-20 23:41:09,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11099d24/6e122ae97a0d43ec9dab222fef75cf2d/FLAG30f93f5cc [2023-12-20 23:41:09,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11099d24/6e122ae97a0d43ec9dab222fef75cf2d [2023-12-20 23:41:09,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 23:41:09,259 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 23:41:09,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 23:41:09,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 23:41:09,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 23:41:09,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754e76a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09, skipping insertion in model container [2023-12-20 23:41:09,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,310 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 23:41:09,421 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-17.i[916,929] [2023-12-20 23:41:09,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:41:09,571 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 23:41:09,579 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-17.i[916,929] [2023-12-20 23:41:09,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:41:09,677 INFO L206 MainTranslator]: Completed translation [2023-12-20 23:41:09,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09 WrapperNode [2023-12-20 23:41:09,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 23:41:09,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 23:41:09,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 23:41:09,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 23:41:09,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,751 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 361 [2023-12-20 23:41:09,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 23:41:09,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 23:41:09,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 23:41:09,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 23:41:09,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,775 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,810 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 23:41:09,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 23:41:09,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 23:41:09,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 23:41:09,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 23:41:09,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (1/1) ... [2023-12-20 23:41:09,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:41:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:41:09,865 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) [2023-12-20 23:41:09,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 23:41:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 23:41:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 23:41:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 23:41:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 23:41:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 23:41:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 23:41:09,987 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 23:41:09,988 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 23:41:10,485 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 23:41:10,506 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 23:41:10,506 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 23:41:10,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:41:10 BoogieIcfgContainer [2023-12-20 23:41:10,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 23:41:10,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 23:41:10,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 23:41:10,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 23:41:10,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:41:09" (1/3) ... [2023-12-20 23:41:10,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a2af0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:41:10, skipping insertion in model container [2023-12-20 23:41:10,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:41:09" (2/3) ... [2023-12-20 23:41:10,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a2af0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:41:10, skipping insertion in model container [2023-12-20 23:41:10,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:41:10" (3/3) ... [2023-12-20 23:41:10,511 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-17.i [2023-12-20 23:41:10,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 23:41:10,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 23:41:10,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 23:41:10,565 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;@1d6d135, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 23:41:10,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 23:41:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 90 states have internal predecessors, (133), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-20 23:41:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-20 23:41:10,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:41:10,582 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:41:10,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:41:10,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:41:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -994076892, now seen corresponding path program 1 times [2023-12-20 23:41:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:41:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631783567] [2023-12-20 23:41:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:10,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:41:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:41:10,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:41:10,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631783567] [2023-12-20 23:41:10,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 23:41:10,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886325639] [2023-12-20 23:41:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:10,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:10,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:41:10,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:41:10,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 23:41:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:41:11,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 23:41:11,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:41:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2023-12-20 23:41:11,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:41:11,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886325639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:41:11,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:41:11,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 23:41:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125787548] [2023-12-20 23:41:11,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:41:11,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 23:41:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:41:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 23:41:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:41:11,173 INFO L87 Difference]: Start difference. First operand has 139 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 90 states have internal predecessors, (133), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-20 23:41:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:41:11,210 INFO L93 Difference]: Finished difference Result 275 states and 499 transitions. [2023-12-20 23:41:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 23:41:11,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) Word has length 306 [2023-12-20 23:41:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:41:11,238 INFO L225 Difference]: With dead ends: 275 [2023-12-20 23:41:11,239 INFO L226 Difference]: Without dead ends: 137 [2023-12-20 23:41:11,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:41:11,249 INFO L413 NwaCegarLoop]: 219 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, 219 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:41:11,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:41:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-20 23:41:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-20 23:41:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.4545454545454546) internal successors, (128), 88 states have internal predecessors, (128), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-20 23:41:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 222 transitions. [2023-12-20 23:41:11,311 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 222 transitions. Word has length 306 [2023-12-20 23:41:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:41:11,314 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 222 transitions. [2023-12-20 23:41:11,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-20 23:41:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 222 transitions. [2023-12-20 23:41:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-20 23:41:11,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:41:11,319 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:41:11,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 23:41:11,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 23:41:11,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:41:11,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:41:11,523 INFO L85 PathProgramCache]: Analyzing trace with hash -644169618, now seen corresponding path program 1 times [2023-12-20 23:41:11,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:41:11,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596669367] [2023-12-20 23:41:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:11,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:41:11,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:41:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063693741] [2023-12-20 23:41:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:11,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:11,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:41:11,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:41:11,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 23:41:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:41:11,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 23:41:11,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:41:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1968 proven. 45 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2023-12-20 23:41:12,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:41:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 93 proven. 45 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2023-12-20 23:41:12,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:41:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596669367] [2023-12-20 23:41:12,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:41:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063693741] [2023-12-20 23:41:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063693741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 23:41:12,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 23:41:12,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-20 23:41:12,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142514594] [2023-12-20 23:41:12,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 23:41:12,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 23:41:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:41:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 23:41:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-20 23:41:12,227 INFO L87 Difference]: Start difference. First operand 137 states and 222 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 3 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2023-12-20 23:41:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:41:12,622 INFO L93 Difference]: Finished difference Result 278 states and 446 transitions. [2023-12-20 23:41:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 23:41:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 3 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 306 [2023-12-20 23:41:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:41:12,629 INFO L225 Difference]: With dead ends: 278 [2023-12-20 23:41:12,629 INFO L226 Difference]: Without dead ends: 142 [2023-12-20 23:41:12,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-20 23:41:12,632 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 253 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 23:41:12,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 473 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 23:41:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-20 23:41:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-12-20 23:41:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-20 23:41:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 222 transitions. [2023-12-20 23:41:12,649 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 222 transitions. Word has length 306 [2023-12-20 23:41:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:41:12,649 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 222 transitions. [2023-12-20 23:41:12,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 3 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2023-12-20 23:41:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 222 transitions. [2023-12-20 23:41:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-20 23:41:12,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:41:12,653 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:41:12,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 23:41:12,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 23:41:12,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:41:12,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:41:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2123480722, now seen corresponding path program 1 times [2023-12-20 23:41:12,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:41:12,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234222642] [2023-12-20 23:41:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:41:12,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:41:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238507074] [2023-12-20 23:41:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:12,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:12,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:41:12,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:41:12,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 23:41:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:41:13,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 23:41:13,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:41:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-20 23:41:13,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:41:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:41:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234222642] [2023-12-20 23:41:13,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:41:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238507074] [2023-12-20 23:41:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238507074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:41:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:41:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 23:41:13,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962007866] [2023-12-20 23:41:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:41:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 23:41:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:41:13,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 23:41:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 23:41:13,432 INFO L87 Difference]: Start difference. First operand 140 states and 222 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2023-12-20 23:41:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:41:13,575 INFO L93 Difference]: Finished difference Result 418 states and 664 transitions. [2023-12-20 23:41:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 23:41:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 306 [2023-12-20 23:41:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:41:13,577 INFO L225 Difference]: With dead ends: 418 [2023-12-20 23:41:13,577 INFO L226 Difference]: Without dead ends: 279 [2023-12-20 23:41:13,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 23:41:13,578 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 75 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 23:41:13,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 520 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 23:41:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-20 23:41:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2023-12-20 23:41:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 178 states have (on average 1.4213483146067416) internal successors, (253), 178 states have internal predecessors, (253), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-20 23:41:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 441 transitions. [2023-12-20 23:41:13,607 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 441 transitions. Word has length 306 [2023-12-20 23:41:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:41:13,608 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 441 transitions. [2023-12-20 23:41:13,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2023-12-20 23:41:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 441 transitions. [2023-12-20 23:41:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-20 23:41:13,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:41:13,610 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:41:13,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 23:41:13,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:13,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:41:13,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:41:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1443422352, now seen corresponding path program 1 times [2023-12-20 23:41:13,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:41:13,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156041785] [2023-12-20 23:41:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:41:13,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:41:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156760281] [2023-12-20 23:41:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:13,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:41:13,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:41:13,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 23:41:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:41:14,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 23:41:14,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:41:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-20 23:41:14,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:41:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:41:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156041785] [2023-12-20 23:41:14,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:41:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156760281] [2023-12-20 23:41:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156760281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:41:14,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:41:14,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 23:41:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372331616] [2023-12-20 23:41:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:41:14,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 23:41:14,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:41:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 23:41:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 23:41:14,117 INFO L87 Difference]: Start difference. First operand 277 states and 441 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2023-12-20 23:41:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:41:14,167 INFO L93 Difference]: Finished difference Result 829 states and 1321 transitions. [2023-12-20 23:41:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 23:41:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 306 [2023-12-20 23:41:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:41:14,171 INFO L225 Difference]: With dead ends: 829 [2023-12-20 23:41:14,171 INFO L226 Difference]: Without dead ends: 553 [2023-12-20 23:41:14,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 23:41:14,172 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 213 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:41:14,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 591 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:41:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-20 23:41:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 295. [2023-12-20 23:41:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 196 states have (on average 1.4234693877551021) internal successors, (279), 196 states have internal predecessors, (279), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-20 23:41:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 467 transitions. [2023-12-20 23:41:14,226 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 467 transitions. Word has length 306 [2023-12-20 23:41:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:41:14,229 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 467 transitions. [2023-12-20 23:41:14,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2023-12-20 23:41:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 467 transitions. [2023-12-20 23:41:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-20 23:41:14,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:41:14,232 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:41:14,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 23:41:14,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:14,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:41:14,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:41:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1263197042, now seen corresponding path program 1 times [2023-12-20 23:41:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:41:14,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038519213] [2023-12-20 23:41:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:14,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:41:14,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:41:14,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581823112] [2023-12-20 23:41:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:41:14,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:41:14,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:41:14,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:41:14,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 23:41:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:41:14,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 23:41:14,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:41:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2588 proven. 345 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2023-12-20 23:41:16,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-20 23:55:43,864 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 23:55:43,864 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 [2023-12-20 23:55:44,035 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 23:55:44,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 23:55:44,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:55:44,245 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 307 with TraceHistMax 47,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-94-4-36-4-4-5-3-5-3-4-4-3-3-3-4-6-4-6-3-6-2-4-2-4-2-3-2-3-2-3-2-4-2-4-2-5-2-5-2-5-2-4-2-3-2-3-2-8-2-9-2-8-2-7-2-7-2-8-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-8-2-7-2-6-2-5-2-4-2-3-2-1 context. [2023-12-20 23:55:44,249 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-20 23:55:44,251 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 23:55:44,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 11:55:44 BoogieIcfgContainer [2023-12-20 23:55:44,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 23:55:44,254 INFO L158 Benchmark]: Toolchain (without parser) took 874994.81ms. Allocated memory was 219.2MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 159.9MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. [2023-12-20 23:55:44,258 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 23:55:44,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.78ms. Allocated memory is still 219.2MB. Free memory was 159.7MB in the beginning and 184.2MB in the end (delta: -24.6MB). Peak memory consumption was 28.8MB. Max. memory is 8.0GB. [2023-12-20 23:55:44,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.31ms. Allocated memory is still 219.2MB. Free memory was 184.2MB in the beginning and 170.2MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 23:55:44,258 INFO L158 Benchmark]: Boogie Preprocessor took 90.99ms. Allocated memory is still 219.2MB. Free memory was 170.2MB in the beginning and 139.8MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-20 23:55:44,259 INFO L158 Benchmark]: RCFGBuilder took 662.34ms. Allocated memory is still 219.2MB. Free memory was 139.8MB in the beginning and 73.7MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2023-12-20 23:55:44,259 INFO L158 Benchmark]: TraceAbstraction took 873745.91ms. Allocated memory was 219.2MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 72.7MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 4.5GB. Max. memory is 8.0GB. [2023-12-20 23:55:44,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 416.78ms. Allocated memory is still 219.2MB. Free memory was 159.7MB in the beginning and 184.2MB in the end (delta: -24.6MB). Peak memory consumption was 28.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.31ms. Allocated memory is still 219.2MB. Free memory was 184.2MB in the beginning and 170.2MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 90.99ms. Allocated memory is still 219.2MB. Free memory was 170.2MB in the beginning and 139.8MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * RCFGBuilder took 662.34ms. Allocated memory is still 219.2MB. Free memory was 139.8MB in the beginning and 73.7MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * TraceAbstraction took 873745.91ms. Allocated memory was 219.2MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 72.7MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 4.5GB. 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 307 with TraceHistMax 47,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-94-4-36-4-4-5-3-5-3-4-4-3-3-3-4-6-4-6-3-6-2-4-2-4-2-3-2-3-2-3-2-4-2-4-2-5-2-5-2-5-2-4-2-3-2-3-2-8-2-9-2-8-2-7-2-7-2-8-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-9-2-8-2-7-2-6-2-5-2-4-2-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.7s, OverallIterations: 5, TraceHistogramMax: 47, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 572 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 541 mSDsluCounter, 1803 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 825 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 604 IncrementalHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 978 mSDtfsCounter, 604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1514 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 262 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1530 NumberOfCodeBlocks, 1530 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1525 ConstructedInterpolants, 0 QuantifiedInterpolants, 3229 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2985 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 21530/21620 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