/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-94.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:13:33,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:13:34,005 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:13:34,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:13:34,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:13:34,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:13:34,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:13:34,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:13:34,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:13:34,033 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:13:34,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:13:34,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:13:34,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:13:34,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:13:34,035 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:13:34,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:13:34,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:13:34,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:13:34,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:13:34,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:13:34,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:13:34,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:13:34,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:13:34,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:13:34,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:13:34,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:13:34,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:13:34,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:13:34,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:13:34,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:13:34,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:13:34,040 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:13:34,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:13:34,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:13:34,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:13:34,243 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:13:34,243 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:13:34,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-94.i [2023-12-15 21:13:35,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:13:35,431 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:13:35,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-94.i [2023-12-15 21:13:35,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49058717/7938fbabc6914324b012795a22f66530/FLAG250ccb026 [2023-12-15 21:13:35,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49058717/7938fbabc6914324b012795a22f66530 [2023-12-15 21:13:35,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:13:35,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:13:35,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:13:35,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:13:35,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:13:35,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a210e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35, skipping insertion in model container [2023-12-15 21:13:35,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,505 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:13:35,622 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-94.i[916,929] [2023-12-15 21:13:35,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:13:35,775 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:13:35,784 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-94.i[916,929] [2023-12-15 21:13:35,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:13:35,851 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:13:35,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35 WrapperNode [2023-12-15 21:13:35,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:13:35,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:13:35,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:13:35,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:13:35,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,904 INFO L138 Inliner]: procedures = 26, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 504 [2023-12-15 21:13:35,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:13:35,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:13:35,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:13:35,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:13:35,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,955 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:13:35,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:35,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:36,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:13:36,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:13:36,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:13:36,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:13:36,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (1/1) ... [2023-12-15 21:13:36,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:13:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:36,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:13:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:13:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:13:36,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:13:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:13:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:13:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:13:36,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:13:36,188 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:13:36,189 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:13:36,779 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:13:36,809 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:13:36,809 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:13:36,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:13:36 BoogieIcfgContainer [2023-12-15 21:13:36,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:13:36,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:13:36,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:13:36,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:13:36,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:13:35" (1/3) ... [2023-12-15 21:13:36,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4083f6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:13:36, skipping insertion in model container [2023-12-15 21:13:36,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:35" (2/3) ... [2023-12-15 21:13:36,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4083f6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:13:36, skipping insertion in model container [2023-12-15 21:13:36,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:13:36" (3/3) ... [2023-12-15 21:13:36,816 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-94.i [2023-12-15 21:13:36,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:13:36,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:13:36,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:13:36,872 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;@b0f54dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:13:36,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:13:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 130 states have (on average 1.5923076923076922) internal successors, (207), 131 states have internal predecessors, (207), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 21:13:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-15 21:13:36,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:36,889 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:36,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:36,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1868492597, now seen corresponding path program 1 times [2023-12-15 21:13:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514721475] [2023-12-15 21:13:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:37,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:37,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514721475] [2023-12-15 21:13:37,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:13:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398525710] [2023-12-15 21:13:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:37,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:37,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:37,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:37,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:13:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:37,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:13:37,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2023-12-15 21:13:37,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398525710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:37,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:37,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:13:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827962] [2023-12-15 21:13:37,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:13:37,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:13:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:13:37,486 INFO L87 Difference]: Start difference. First operand has 172 states, 130 states have (on average 1.5923076923076922) internal successors, (207), 131 states have internal predecessors, (207), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-15 21:13:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:37,544 INFO L93 Difference]: Finished difference Result 341 states and 607 transitions. [2023-12-15 21:13:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:13:37,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) Word has length 271 [2023-12-15 21:13:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:37,553 INFO L225 Difference]: With dead ends: 341 [2023-12-15 21:13:37,553 INFO L226 Difference]: Without dead ends: 170 [2023-12-15 21:13:37,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:13:37,558 INFO L413 NwaCegarLoop]: 277 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, 277 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:37,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-15 21:13:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-15 21:13:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 129 states have (on average 1.565891472868217) internal successors, (202), 129 states have internal predecessors, (202), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 21:13:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 280 transitions. [2023-12-15 21:13:37,598 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 280 transitions. Word has length 271 [2023-12-15 21:13:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:37,598 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 280 transitions. [2023-12-15 21:13:37,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-15 21:13:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 280 transitions. [2023-12-15 21:13:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-15 21:13:37,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:37,602 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:37,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:37,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:13:37,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:37,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash -301388455, now seen corresponding path program 1 times [2023-12-15 21:13:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898602663] [2023-12-15 21:13:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:37,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:37,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376922285] [2023-12-15 21:13:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:37,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:37,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:37,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:13:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:38,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:13:38,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:38,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898602663] [2023-12-15 21:13:38,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376922285] [2023-12-15 21:13:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376922285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:38,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:13:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6405391] [2023-12-15 21:13:38,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:13:38,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:13:38,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:13:38,475 INFO L87 Difference]: Start difference. First operand 170 states and 280 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:39,294 INFO L93 Difference]: Finished difference Result 832 states and 1375 transitions. [2023-12-15 21:13:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:13:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 271 [2023-12-15 21:13:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:39,303 INFO L225 Difference]: With dead ends: 832 [2023-12-15 21:13:39,303 INFO L226 Difference]: Without dead ends: 663 [2023-12-15 21:13:39,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:13:39,307 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 641 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:39,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2381 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:13:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-12-15 21:13:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 410. [2023-12-15 21:13:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 329 states have (on average 1.5927051671732524) internal successors, (524), 329 states have internal predecessors, (524), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-15 21:13:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 680 transitions. [2023-12-15 21:13:39,341 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 680 transitions. Word has length 271 [2023-12-15 21:13:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:39,342 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 680 transitions. [2023-12-15 21:13:39,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 680 transitions. [2023-12-15 21:13:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-15 21:13:39,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:39,345 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:39,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:39,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:13:39,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:39,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1687591849, now seen corresponding path program 1 times [2023-12-15 21:13:39,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:39,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704149670] [2023-12-15 21:13:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:39,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:39,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:39,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382961174] [2023-12-15 21:13:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:39,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:39,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:39,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:13:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:39,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:13:39,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:40,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:40,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704149670] [2023-12-15 21:13:40,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382961174] [2023-12-15 21:13:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382961174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:13:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227814981] [2023-12-15 21:13:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:40,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:13:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:13:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:13:40,058 INFO L87 Difference]: Start difference. First operand 410 states and 680 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:40,780 INFO L93 Difference]: Finished difference Result 1085 states and 1792 transitions. [2023-12-15 21:13:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:13:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 271 [2023-12-15 21:13:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:40,786 INFO L225 Difference]: With dead ends: 1085 [2023-12-15 21:13:40,787 INFO L226 Difference]: Without dead ends: 676 [2023-12-15 21:13:40,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:13:40,790 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 820 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:40,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1902 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:13:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-15 21:13:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 408. [2023-12-15 21:13:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 327 states have (on average 1.5932721712538227) internal successors, (521), 327 states have internal predecessors, (521), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-15 21:13:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 677 transitions. [2023-12-15 21:13:40,841 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 677 transitions. Word has length 271 [2023-12-15 21:13:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:40,842 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 677 transitions. [2023-12-15 21:13:40,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 677 transitions. [2023-12-15 21:13:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-15 21:13:40,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:40,845 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:40,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:41,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:41,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:41,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 988854075, now seen corresponding path program 1 times [2023-12-15 21:13:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:41,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658209408] [2023-12-15 21:13:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:41,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:41,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722693290] [2023-12-15 21:13:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:41,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:41,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:13:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:41,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:13:41,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:41,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:41,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658209408] [2023-12-15 21:13:41,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:41,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722693290] [2023-12-15 21:13:41,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722693290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:41,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:41,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:13:41,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341687903] [2023-12-15 21:13:41,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:41,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:13:41,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:13:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:13:41,339 INFO L87 Difference]: Start difference. First operand 408 states and 677 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:41,484 INFO L93 Difference]: Finished difference Result 1136 states and 1887 transitions. [2023-12-15 21:13:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:13:41,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 272 [2023-12-15 21:13:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:41,488 INFO L225 Difference]: With dead ends: 1136 [2023-12-15 21:13:41,488 INFO L226 Difference]: Without dead ends: 729 [2023-12-15 21:13:41,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:13:41,492 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 408 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:41,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 585 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:13:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-12-15 21:13:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 725. [2023-12-15 21:13:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 606 states have (on average 1.608910891089109) internal successors, (975), 608 states have internal predecessors, (975), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-15 21:13:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1203 transitions. [2023-12-15 21:13:41,530 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1203 transitions. Word has length 272 [2023-12-15 21:13:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:41,531 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1203 transitions. [2023-12-15 21:13:41,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1203 transitions. [2023-12-15 21:13:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-15 21:13:41,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:41,534 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:41,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:41,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:41,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:41,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash -651580507, now seen corresponding path program 1 times [2023-12-15 21:13:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:41,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401959122] [2023-12-15 21:13:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:41,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:41,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:41,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137685902] [2023-12-15 21:13:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:41,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:41,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:41,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:41,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:13:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:41,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:13:41,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:42,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:42,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:42,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401959122] [2023-12-15 21:13:42,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137685902] [2023-12-15 21:13:42,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137685902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:13:42,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871613894] [2023-12-15 21:13:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:42,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:13:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:13:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:13:42,017 INFO L87 Difference]: Start difference. First operand 725 states and 1203 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:42,090 INFO L93 Difference]: Finished difference Result 2111 states and 3507 transitions. [2023-12-15 21:13:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:13:42,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 272 [2023-12-15 21:13:42,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:42,097 INFO L225 Difference]: With dead ends: 2111 [2023-12-15 21:13:42,097 INFO L226 Difference]: Without dead ends: 1387 [2023-12-15 21:13:42,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:13:42,099 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 331 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:42,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 989 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2023-12-15 21:13:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 737. [2023-12-15 21:13:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 618 states have (on average 1.5970873786407767) internal successors, (987), 620 states have internal predecessors, (987), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-15 21:13:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1215 transitions. [2023-12-15 21:13:42,149 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1215 transitions. Word has length 272 [2023-12-15 21:13:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:42,151 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1215 transitions. [2023-12-15 21:13:42,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1215 transitions. [2023-12-15 21:13:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-15 21:13:42,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:42,154 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:42,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:42,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:42,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:42,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1045947293, now seen corresponding path program 1 times [2023-12-15 21:13:42,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:42,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797994881] [2023-12-15 21:13:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:42,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:42,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:42,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388272907] [2023-12-15 21:13:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:42,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:42,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:42,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:42,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:13:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:42,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:13:42,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:42,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:42,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:42,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797994881] [2023-12-15 21:13:42,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:42,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388272907] [2023-12-15 21:13:42,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388272907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:42,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:13:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43404986] [2023-12-15 21:13:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:13:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:13:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:13:42,868 INFO L87 Difference]: Start difference. First operand 737 states and 1215 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:43,549 INFO L93 Difference]: Finished difference Result 3903 states and 6479 transitions. [2023-12-15 21:13:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 21:13:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 272 [2023-12-15 21:13:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:43,561 INFO L225 Difference]: With dead ends: 3903 [2023-12-15 21:13:43,561 INFO L226 Difference]: Without dead ends: 3605 [2023-12-15 21:13:43,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2023-12-15 21:13:43,564 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2613 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:43,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 2810 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:13:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2023-12-15 21:13:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 2163. [2023-12-15 21:13:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1817 states have (on average 1.5987892129884425) internal successors, (2905), 1825 states have internal predecessors, (2905), 331 states have call successors, (331), 14 states have call predecessors, (331), 14 states have return successors, (331), 323 states have call predecessors, (331), 331 states have call successors, (331) [2023-12-15 21:13:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3567 transitions. [2023-12-15 21:13:43,684 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3567 transitions. Word has length 272 [2023-12-15 21:13:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:43,684 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3567 transitions. [2023-12-15 21:13:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3567 transitions. [2023-12-15 21:13:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-15 21:13:43,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:43,688 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:43,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 21:13:43,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:43,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:43,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1179960799, now seen corresponding path program 1 times [2023-12-15 21:13:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556005481] [2023-12-15 21:13:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:43,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:43,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505396322] [2023-12-15 21:13:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:43,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:43,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:43,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:13:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:44,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:13:44,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:44,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:44,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:44,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556005481] [2023-12-15 21:13:44,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:44,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505396322] [2023-12-15 21:13:44,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505396322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:44,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:44,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:13:44,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789604430] [2023-12-15 21:13:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:44,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:13:44,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:13:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:13:44,171 INFO L87 Difference]: Start difference. First operand 2163 states and 3567 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:44,438 INFO L93 Difference]: Finished difference Result 4273 states and 7036 transitions. [2023-12-15 21:13:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:13:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 272 [2023-12-15 21:13:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:44,446 INFO L225 Difference]: With dead ends: 4273 [2023-12-15 21:13:44,446 INFO L226 Difference]: Without dead ends: 2201 [2023-12-15 21:13:44,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:13:44,449 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 426 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:44,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1148 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:13:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2023-12-15 21:13:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2199. [2023-12-15 21:13:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1847 states have (on average 1.589063345966432) internal successors, (2935), 1855 states have internal predecessors, (2935), 331 states have call successors, (331), 20 states have call predecessors, (331), 20 states have return successors, (331), 323 states have call predecessors, (331), 331 states have call successors, (331) [2023-12-15 21:13:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3597 transitions. [2023-12-15 21:13:44,567 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3597 transitions. Word has length 272 [2023-12-15 21:13:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:44,568 INFO L495 AbstractCegarLoop]: Abstraction has 2199 states and 3597 transitions. [2023-12-15 21:13:44,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3597 transitions. [2023-12-15 21:13:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:44,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:44,571 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:44,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:44,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:44,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:44,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash -552244438, now seen corresponding path program 1 times [2023-12-15 21:13:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406617764] [2023-12-15 21:13:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:44,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:44,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760967683] [2023-12-15 21:13:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:44,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:44,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:44,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:44,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:13:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:44,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:13:45,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1478 proven. 66 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2023-12-15 21:13:45,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 48 proven. 66 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:13:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406617764] [2023-12-15 21:13:45,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760967683] [2023-12-15 21:13:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760967683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:45,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 21:13:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264366843] [2023-12-15 21:13:45,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:13:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:13:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:13:45,307 INFO L87 Difference]: Start difference. First operand 2199 states and 3597 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-15 21:13:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:45,596 INFO L93 Difference]: Finished difference Result 3757 states and 6099 transitions. [2023-12-15 21:13:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:13:45,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 273 [2023-12-15 21:13:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:45,602 INFO L225 Difference]: With dead ends: 3757 [2023-12-15 21:13:45,602 INFO L226 Difference]: Without dead ends: 1649 [2023-12-15 21:13:45,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:13:45,606 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 503 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:45,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 658 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:13:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2023-12-15 21:13:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 839. [2023-12-15 21:13:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 672 states have (on average 1.5431547619047619) internal successors, (1037), 675 states have internal predecessors, (1037), 153 states have call successors, (153), 13 states have call predecessors, (153), 13 states have return successors, (153), 150 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-15 21:13:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1343 transitions. [2023-12-15 21:13:45,696 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1343 transitions. Word has length 273 [2023-12-15 21:13:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:45,697 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1343 transitions. [2023-12-15 21:13:45,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-15 21:13:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1343 transitions. [2023-12-15 21:13:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:45,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:45,699 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:45,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:45,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:13:45,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:45,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2064600346, now seen corresponding path program 1 times [2023-12-15 21:13:45,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:45,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154094138] [2023-12-15 21:13:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:45,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:45,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909944561] [2023-12-15 21:13:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:45,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:45,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:45,944 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:45,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:13:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:46,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:13:46,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 398 proven. 6 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2023-12-15 21:13:46,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:13:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154094138] [2023-12-15 21:13:46,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909944561] [2023-12-15 21:13:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909944561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:46,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:13:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348588049] [2023-12-15 21:13:46,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:13:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:13:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:13:46,292 INFO L87 Difference]: Start difference. First operand 839 states and 1343 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 21:13:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:46,480 INFO L93 Difference]: Finished difference Result 1637 states and 2606 transitions. [2023-12-15 21:13:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:13:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 273 [2023-12-15 21:13:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:46,484 INFO L225 Difference]: With dead ends: 1637 [2023-12-15 21:13:46,484 INFO L226 Difference]: Without dead ends: 873 [2023-12-15 21:13:46,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:13:46,486 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 399 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:46,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 615 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:13:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-12-15 21:13:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 851. [2023-12-15 21:13:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 681 states have (on average 1.5301027900146842) internal successors, (1042), 684 states have internal predecessors, (1042), 153 states have call successors, (153), 16 states have call predecessors, (153), 16 states have return successors, (153), 150 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-15 21:13:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1348 transitions. [2023-12-15 21:13:46,526 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1348 transitions. Word has length 273 [2023-12-15 21:13:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:46,526 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1348 transitions. [2023-12-15 21:13:46,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 21:13:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1348 transitions. [2023-12-15 21:13:46,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:46,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:46,529 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:46,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:46,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:46,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:46,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash 384999784, now seen corresponding path program 1 times [2023-12-15 21:13:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870529579] [2023-12-15 21:13:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:46,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:46,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966700131] [2023-12-15 21:13:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:46,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:46,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:46,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:13:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:46,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:13:46,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:47,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870529579] [2023-12-15 21:13:47,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966700131] [2023-12-15 21:13:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966700131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:47,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:47,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:13:47,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193041657] [2023-12-15 21:13:47,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:47,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:13:47,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:13:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:13:47,772 INFO L87 Difference]: Start difference. First operand 851 states and 1348 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:48,063 INFO L93 Difference]: Finished difference Result 2093 states and 3364 transitions. [2023-12-15 21:13:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:13:48,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 273 [2023-12-15 21:13:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:48,067 INFO L225 Difference]: With dead ends: 2093 [2023-12-15 21:13:48,068 INFO L226 Difference]: Without dead ends: 1321 [2023-12-15 21:13:48,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:13:48,069 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 495 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:48,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1208 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:13:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-12-15 21:13:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 865. [2023-12-15 21:13:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 695 states have (on average 1.5294964028776978) internal successors, (1063), 697 states have internal predecessors, (1063), 153 states have call successors, (153), 16 states have call predecessors, (153), 16 states have return successors, (153), 151 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-15 21:13:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1369 transitions. [2023-12-15 21:13:48,113 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1369 transitions. Word has length 273 [2023-12-15 21:13:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:48,114 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1369 transitions. [2023-12-15 21:13:48,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1369 transitions. [2023-12-15 21:13:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:48,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:48,116 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:48,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 21:13:48,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:13:48,322 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:48,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash 31911402, now seen corresponding path program 1 times [2023-12-15 21:13:48,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:48,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83467466] [2023-12-15 21:13:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:48,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:48,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:48,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133632523] [2023-12-15 21:13:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:48,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:48,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:13:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:48,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:13:48,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1400 proven. 78 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2023-12-15 21:13:49,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:13:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83467466] [2023-12-15 21:13:49,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133632523] [2023-12-15 21:13:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133632523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:49,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:49,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-15 21:13:49,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865290590] [2023-12-15 21:13:49,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:49,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-15 21:13:49,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-15 21:13:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:13:49,894 INFO L87 Difference]: Start difference. First operand 865 states and 1369 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 6 states have call successors, (78), 4 states have call predecessors, (78), 6 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:13:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:56,349 INFO L93 Difference]: Finished difference Result 7120 states and 11242 transitions. [2023-12-15 21:13:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-15 21:13:56,349 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 6 states have call successors, (78), 4 states have call predecessors, (78), 6 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) Word has length 273 [2023-12-15 21:13:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:56,372 INFO L225 Difference]: With dead ends: 7120 [2023-12-15 21:13:56,372 INFO L226 Difference]: Without dead ends: 6348 [2023-12-15 21:13:56,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6635 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3347, Invalid=13165, Unknown=0, NotChecked=0, Total=16512 [2023-12-15 21:13:56,378 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 7927 mSDsluCounter, 4099 mSDsCounter, 0 mSdLazyCounter, 4887 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7941 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 6523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 4887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:56,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7941 Valid, 4391 Invalid, 6523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 4887 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-15 21:13:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2023-12-15 21:13:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 4339. [2023-12-15 21:13:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 3773 states have (on average 1.5809700503578055) internal successors, (5965), 3787 states have internal predecessors, (5965), 498 states have call successors, (498), 67 states have call predecessors, (498), 67 states have return successors, (498), 484 states have call predecessors, (498), 498 states have call successors, (498) [2023-12-15 21:13:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 6961 transitions. [2023-12-15 21:13:56,625 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 6961 transitions. Word has length 273 [2023-12-15 21:13:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:56,625 INFO L495 AbstractCegarLoop]: Abstraction has 4339 states and 6961 transitions. [2023-12-15 21:13:56,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 6 states have call successors, (78), 4 states have call predecessors, (78), 6 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:13:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 6961 transitions. [2023-12-15 21:13:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:56,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:56,628 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:56,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:56,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:13:56,835 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:56,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1773526932, now seen corresponding path program 1 times [2023-12-15 21:13:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526001110] [2023-12-15 21:13:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:56,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:56,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140984076] [2023-12-15 21:13:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:56,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:56,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:56,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:56,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:13:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:57,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:13:57,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1730 proven. 78 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2023-12-15 21:13:57,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:13:57,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526001110] [2023-12-15 21:13:57,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140984076] [2023-12-15 21:13:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140984076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:57,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:57,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 21:13:57,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932215842] [2023-12-15 21:13:57,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:57,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:13:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:13:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:13:57,595 INFO L87 Difference]: Start difference. First operand 4339 states and 6961 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 5 states have call successors, (65), 3 states have call predecessors, (65), 5 states have return successors, (66), 5 states have call predecessors, (66), 5 states have call successors, (66) [2023-12-15 21:13:57,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:57,984 INFO L93 Difference]: Finished difference Result 5916 states and 9480 transitions. [2023-12-15 21:13:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:13:57,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 5 states have call successors, (65), 3 states have call predecessors, (65), 5 states have return successors, (66), 5 states have call predecessors, (66), 5 states have call successors, (66) Word has length 273 [2023-12-15 21:13:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:57,990 INFO L225 Difference]: With dead ends: 5916 [2023-12-15 21:13:57,990 INFO L226 Difference]: Without dead ends: 1678 [2023-12-15 21:13:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:13:57,998 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 768 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:57,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 555 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:13:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2023-12-15 21:13:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1638. [2023-12-15 21:13:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1372 states have (on average 1.564139941690962) internal successors, (2146), 1376 states have internal predecessors, (2146), 235 states have call successors, (235), 30 states have call predecessors, (235), 30 states have return successors, (235), 231 states have call predecessors, (235), 235 states have call successors, (235) [2023-12-15 21:13:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2616 transitions. [2023-12-15 21:13:58,112 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2616 transitions. Word has length 273 [2023-12-15 21:13:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:58,112 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2616 transitions. [2023-12-15 21:13:58,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 5 states have call successors, (65), 3 states have call predecessors, (65), 5 states have return successors, (66), 5 states have call predecessors, (66), 5 states have call successors, (66) [2023-12-15 21:13:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2616 transitions. [2023-12-15 21:13:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:58,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:58,114 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:58,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 21:13:58,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:13:58,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:58,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1240135188, now seen corresponding path program 1 times [2023-12-15 21:13:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626462148] [2023-12-15 21:13:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:58,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:58,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982424391] [2023-12-15 21:13:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:58,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:58,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:58,343 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:58,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:13:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:58,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:13:58,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:13:58,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626462148] [2023-12-15 21:13:58,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982424391] [2023-12-15 21:13:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982424391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:58,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:13:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402345095] [2023-12-15 21:13:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:13:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:13:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:13:58,739 INFO L87 Difference]: Start difference. First operand 1638 states and 2616 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:59,126 INFO L93 Difference]: Finished difference Result 6495 states and 10437 transitions. [2023-12-15 21:13:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:13:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 273 [2023-12-15 21:13:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:59,153 INFO L225 Difference]: With dead ends: 6495 [2023-12-15 21:13:59,153 INFO L226 Difference]: Without dead ends: 4962 [2023-12-15 21:13:59,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:13:59,156 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 833 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:59,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1215 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:13:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2023-12-15 21:13:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 3483. [2023-12-15 21:13:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 2989 states have (on average 1.5690866510538641) internal successors, (4690), 2997 states have internal predecessors, (4690), 435 states have call successors, (435), 58 states have call predecessors, (435), 58 states have return successors, (435), 427 states have call predecessors, (435), 435 states have call successors, (435) [2023-12-15 21:13:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 5560 transitions. [2023-12-15 21:13:59,311 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 5560 transitions. Word has length 273 [2023-12-15 21:13:59,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:59,311 INFO L495 AbstractCegarLoop]: Abstraction has 3483 states and 5560 transitions. [2023-12-15 21:13:59,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:13:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 5560 transitions. [2023-12-15 21:13:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 21:13:59,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:59,313 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:59,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:13:59,519 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:59,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:59,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1414397526, now seen corresponding path program 1 times [2023-12-15 21:13:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:59,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991767330] [2023-12-15 21:13:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:59,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:59,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:59,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68773069] [2023-12-15 21:13:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:59,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:59,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:13:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:59,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:13:59,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1679 proven. 57 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2023-12-15 21:14:00,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:14:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 165 proven. 60 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2023-12-15 21:14:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991767330] [2023-12-15 21:14:00,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68773069] [2023-12-15 21:14:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68773069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:14:00,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:14:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-15 21:14:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823256315] [2023-12-15 21:14:00,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:14:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 21:14:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 21:14:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:14:00,650 INFO L87 Difference]: Start difference. First operand 3483 states and 5560 transitions. Second operand has 23 states, 23 states have (on average 6.391304347826087) internal successors, (147), 23 states have internal predecessors, (147), 6 states have call successors, (78), 4 states have call predecessors, (78), 8 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:14:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:03,340 INFO L93 Difference]: Finished difference Result 24744 states and 39945 transitions. [2023-12-15 21:14:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-15 21:14:03,341 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.391304347826087) internal successors, (147), 23 states have internal predecessors, (147), 6 states have call successors, (78), 4 states have call predecessors, (78), 8 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) Word has length 273 [2023-12-15 21:14:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:03,391 INFO L225 Difference]: With dead ends: 24744 [2023-12-15 21:14:03,391 INFO L226 Difference]: Without dead ends: 21360 [2023-12-15 21:14:03,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=870, Invalid=2436, Unknown=0, NotChecked=0, Total=3306 [2023-12-15 21:14:03,402 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 6789 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 1505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6837 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1505 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:03,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6837 Valid, 3140 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1505 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 21:14:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21360 states. [2023-12-15 21:14:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21360 to 10300. [2023-12-15 21:14:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10300 states, 9020 states have (on average 1.5633037694013303) internal successors, (14101), 9052 states have internal predecessors, (14101), 1099 states have call successors, (1099), 180 states have call predecessors, (1099), 180 states have return successors, (1099), 1067 states have call predecessors, (1099), 1099 states have call successors, (1099) [2023-12-15 21:14:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10300 states to 10300 states and 16299 transitions. [2023-12-15 21:14:04,012 INFO L78 Accepts]: Start accepts. Automaton has 10300 states and 16299 transitions. Word has length 273 [2023-12-15 21:14:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:04,013 INFO L495 AbstractCegarLoop]: Abstraction has 10300 states and 16299 transitions. [2023-12-15 21:14:04,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.391304347826087) internal successors, (147), 23 states have internal predecessors, (147), 6 states have call successors, (78), 4 states have call predecessors, (78), 8 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:14:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10300 states and 16299 transitions. [2023-12-15 21:14:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-15 21:14:04,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:04,016 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:04,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 21:14:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:04,222 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:04,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 970948287, now seen corresponding path program 1 times [2023-12-15 21:14:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855833916] [2023-12-15 21:14:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:04,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:04,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351823623] [2023-12-15 21:14:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:04,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:04,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:04,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:04,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:14:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:04,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:14:04,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:14:05,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855833916] [2023-12-15 21:14:05,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351823623] [2023-12-15 21:14:05,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351823623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:05,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:05,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:14:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540807697] [2023-12-15 21:14:05,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:14:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:14:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:14:05,351 INFO L87 Difference]: Start difference. First operand 10300 states and 16299 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:14:07,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:07,736 INFO L93 Difference]: Finished difference Result 51931 states and 83639 transitions. [2023-12-15 21:14:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 21:14:07,736 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 274 [2023-12-15 21:14:07,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:07,805 INFO L225 Difference]: With dead ends: 51931 [2023-12-15 21:14:07,806 INFO L226 Difference]: Without dead ends: 41757 [2023-12-15 21:14:07,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 21:14:07,826 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 2571 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 5047 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:07,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2571 Valid, 5047 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:14:07,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41757 states. [2023-12-15 21:14:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41757 to 22367. [2023-12-15 21:14:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22367 states, 20098 states have (on average 1.6030948353069958) internal successors, (32219), 20178 states have internal predecessors, (32219), 1945 states have call successors, (1945), 323 states have call predecessors, (1945), 323 states have return successors, (1945), 1865 states have call predecessors, (1945), 1945 states have call successors, (1945) [2023-12-15 21:14:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22367 states to 22367 states and 36109 transitions. [2023-12-15 21:14:08,916 INFO L78 Accepts]: Start accepts. Automaton has 22367 states and 36109 transitions. Word has length 274 [2023-12-15 21:14:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:08,917 INFO L495 AbstractCegarLoop]: Abstraction has 22367 states and 36109 transitions. [2023-12-15 21:14:08,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:14:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 22367 states and 36109 transitions. [2023-12-15 21:14:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-15 21:14:08,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:08,922 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:08,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:14:09,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:14:09,129 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:09,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -812729850, now seen corresponding path program 1 times [2023-12-15 21:14:09,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:09,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602742882] [2023-12-15 21:14:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:09,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:09,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46714903] [2023-12-15 21:14:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:09,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:09,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:09,153 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:09,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:14:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:09,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:14:09,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1400 proven. 78 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2023-12-15 21:14:10,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:14:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:14:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602742882] [2023-12-15 21:14:10,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46714903] [2023-12-15 21:14:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46714903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:14:10,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:14:10,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-15 21:14:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902669690] [2023-12-15 21:14:10,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:14:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:14:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:14:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:14:10,886 INFO L87 Difference]: Start difference. First operand 22367 states and 36109 transitions. Second operand has 26 states, 26 states have (on average 6.115384615384615) internal successors, (159), 26 states have internal predecessors, (159), 6 states have call successors, (78), 4 states have call predecessors, (78), 6 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:14:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:16,998 INFO L93 Difference]: Finished difference Result 64982 states and 104917 transitions. [2023-12-15 21:14:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-15 21:14:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.115384615384615) internal successors, (159), 26 states have internal predecessors, (159), 6 states have call successors, (78), 4 states have call predecessors, (78), 6 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) Word has length 274 [2023-12-15 21:14:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:17,068 INFO L225 Difference]: With dead ends: 64982 [2023-12-15 21:14:17,068 INFO L226 Difference]: Without dead ends: 42758 [2023-12-15 21:14:17,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1866, Invalid=4614, Unknown=0, NotChecked=0, Total=6480 [2023-12-15 21:14:17,097 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7841 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 1587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7841 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 4768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1587 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:17,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7841 Valid, 3266 Invalid, 4768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1587 Valid, 3181 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 21:14:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42758 states. [2023-12-15 21:14:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42758 to 32137. [2023-12-15 21:14:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32137 states, 29588 states have (on average 1.6224482898472354) internal successors, (48005), 29688 states have internal predecessors, (48005), 2185 states have call successors, (2185), 363 states have call predecessors, (2185), 363 states have return successors, (2185), 2085 states have call predecessors, (2185), 2185 states have call successors, (2185) [2023-12-15 21:14:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32137 states to 32137 states and 52375 transitions. [2023-12-15 21:14:18,431 INFO L78 Accepts]: Start accepts. Automaton has 32137 states and 52375 transitions. Word has length 274 [2023-12-15 21:14:18,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:18,432 INFO L495 AbstractCegarLoop]: Abstraction has 32137 states and 52375 transitions. [2023-12-15 21:14:18,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.115384615384615) internal successors, (159), 26 states have internal predecessors, (159), 6 states have call successors, (78), 4 states have call predecessors, (78), 6 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:14:18,432 INFO L276 IsEmpty]: Start isEmpty. Operand 32137 states and 52375 transitions. [2023-12-15 21:14:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-15 21:14:18,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:18,442 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:18,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:18,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:14:18,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:18,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2052986907, now seen corresponding path program 1 times [2023-12-15 21:14:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355760483] [2023-12-15 21:14:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:18,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790341671] [2023-12-15 21:14:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:18,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:18,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:18,687 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:18,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:14:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:18,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:14:18,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1490 proven. 48 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2023-12-15 21:14:19,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:14:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 66 proven. 48 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:14:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355760483] [2023-12-15 21:14:19,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790341671] [2023-12-15 21:14:19,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790341671] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:14:19,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:14:19,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-15 21:14:19,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300200380] [2023-12-15 21:14:19,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:14:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:14:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:14:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:14:19,898 INFO L87 Difference]: Start difference. First operand 32137 states and 52375 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 4 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) Received shutdown request... [2023-12-15 21:14:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-12-15 21:14:33,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4331, Invalid=15129, Unknown=0, NotChecked=0, Total=19460 [2023-12-15 21:14:33,211 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 9007 mSDsluCounter, 6487 mSDsCounter, 0 mSdLazyCounter, 4909 mSolverCounterSat, 1279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9051 SdHoareTripleChecker+Valid, 7007 SdHoareTripleChecker+Invalid, 6188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1279 IncrementalHoareTripleChecker+Valid, 4909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:33,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9051 Valid, 7007 Invalid, 6188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1279 Valid, 4909 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-15 21:14:33,212 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:14:33,217 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:14:33,217 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:14:33,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:33,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:14:33,419 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (32137states) and FLOYD_HOARE automaton (currently 123 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (94575 states constructed, input type IntersectNwa). [2023-12-15 21:14:33,423 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:33,424 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:14:33,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:14:33 BoogieIcfgContainer [2023-12-15 21:14:33,426 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:14:33,427 INFO L158 Benchmark]: Toolchain (without parser) took 57976.99ms. Allocated memory was 251.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 195.9MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 21:14:33,427 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:14:33,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.70ms. Allocated memory is still 251.7MB. Free memory was 195.9MB in the beginning and 171.3MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-15 21:14:33,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.10ms. Allocated memory is still 251.7MB. Free memory was 170.7MB in the beginning and 159.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 21:14:33,428 INFO L158 Benchmark]: Boogie Preprocessor took 106.86ms. Allocated memory is still 251.7MB. Free memory was 159.7MB in the beginning and 141.4MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 21:14:33,429 INFO L158 Benchmark]: RCFGBuilder took 796.37ms. Allocated memory is still 251.7MB. Free memory was 141.4MB in the beginning and 151.3MB in the end (delta: -9.9MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2023-12-15 21:14:33,429 INFO L158 Benchmark]: TraceAbstraction took 56615.63ms. Allocated memory was 251.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 150.2MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 21:14:33,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 400.70ms. Allocated memory is still 251.7MB. Free memory was 195.9MB in the beginning and 171.3MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.10ms. Allocated memory is still 251.7MB. Free memory was 170.7MB in the beginning and 159.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 106.86ms. Allocated memory is still 251.7MB. Free memory was 159.7MB in the beginning and 141.4MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * RCFGBuilder took 796.37ms. Allocated memory is still 251.7MB. Free memory was 141.4MB in the beginning and 151.3MB in the end (delta: -9.9MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * TraceAbstraction took 56615.63ms. Allocated memory was 251.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 150.2MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (32137states) and FLOYD_HOARE automaton (currently 123 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (94575 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.6s, OverallIterations: 17, TraceHistogramMax: 39, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42541 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42372 mSDsluCounter, 37194 SdHoareTripleChecker+Invalid, 14.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31691 mSDsCounter, 7286 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19475 IncrementalHoareTripleChecker+Invalid, 26761 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7286 mSolverCounterUnsat, 5503 mSDtfsCounter, 19475 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6981 GetRequests, 6431 SyntacticMatches, 1 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18902 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32137occurred in iteration=16, InterpolantAutomatonStates: 353, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 48506 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4906 NumberOfCodeBlocks, 4906 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6525 ConstructedInterpolants, 0 QuantifiedInterpolants, 27584 SizeOfPredicates, 108 NumberOfNonLiveVariables, 12023 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 70311/71136 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