/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:15:34,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:15:34,426 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 20:15:34,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:15:34,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:15:34,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:15:34,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:15:34,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:15:34,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:15:34,458 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:15:34,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:15:34,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:15:34,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:15:34,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:15:34,461 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:15:34,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:15:34,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:15:34,461 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:15:34,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:15:34,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:15:34,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:15:34,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:15:34,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:15:34,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:15:34,462 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:15:34,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:15:34,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:15:34,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:15:34,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:15:34,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:15:34,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:15:34,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:15:34,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:15:34,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:15:34,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:15:34,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:15:34,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:15:34,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:15:34,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:15:34,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:15:34,683 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:15:34,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2023-12-15 20:15:35,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:15:35,948 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:15:35,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2023-12-15 20:15:35,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e234deece/91800bb905a046da89d0b87341428eb4/FLAGe1da2ddd0 [2023-12-15 20:15:35,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e234deece/91800bb905a046da89d0b87341428eb4 [2023-12-15 20:15:35,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:15:35,974 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:15:35,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:15:35,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:15:35,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:15:35,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:15:35" (1/1) ... [2023-12-15 20:15:35,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244c8895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:35, skipping insertion in model container [2023-12-15 20:15:35,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:15:35" (1/1) ... [2023-12-15 20:15:36,017 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:15:36,110 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i[919,932] [2023-12-15 20:15:36,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:15:36,168 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:15:36,179 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i[919,932] [2023-12-15 20:15:36,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:15:36,245 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:15:36,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36 WrapperNode [2023-12-15 20:15:36,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:15:36,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:15:36,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:15:36,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:15:36,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,322 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2023-12-15 20:15:36,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:15:36,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:15:36,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:15:36,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:15:36,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,376 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 20:15:36,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:15:36,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:15:36,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:15:36,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:15:36,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (1/1) ... [2023-12-15 20:15:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:15:36,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:36,517 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 20:15:36,535 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 20:15:36,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:15:36,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:15:36,550 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:15:36,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:15:36,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:15:36,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:15:36,632 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:15:36,634 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:15:37,000 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:15:37,042 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:15:37,042 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:15:37,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:15:37 BoogieIcfgContainer [2023-12-15 20:15:37,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:15:37,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:15:37,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:15:37,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:15:37,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:15:35" (1/3) ... [2023-12-15 20:15:37,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70606363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:15:37, skipping insertion in model container [2023-12-15 20:15:37,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:15:36" (2/3) ... [2023-12-15 20:15:37,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70606363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:15:37, skipping insertion in model container [2023-12-15 20:15:37,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:15:37" (3/3) ... [2023-12-15 20:15:37,056 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2023-12-15 20:15:37,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:15:37,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:15:37,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:15:37,143 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;@1c7af81b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:15:37,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:15:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 54 states have internal predecessors, (84), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 20:15:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 20:15:37,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:15:37,173 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:37,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:15:37,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:15:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1624963548, now seen corresponding path program 1 times [2023-12-15 20:15:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:15:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695474617] [2023-12-15 20:15:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:15:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:37,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:15:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695474617] [2023-12-15 20:15:37,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:15:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365473993] [2023-12-15 20:15:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:37,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:37,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:37,364 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 20:15:37,373 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 20:15:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:37,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:15:37,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:15:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-15 20:15:37,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:15:37,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365473993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:15:37,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:15:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:15:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048542603] [2023-12-15 20:15:37,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:15:37,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:15:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:15:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:15:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:15:37,642 INFO L87 Difference]: Start difference. First operand has 83 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 54 states have internal predecessors, (84), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-15 20:15:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:15:37,672 INFO L93 Difference]: Finished difference Result 163 states and 301 transitions. [2023-12-15 20:15:37,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:15:37,674 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 170 [2023-12-15 20:15:37,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:15:37,679 INFO L225 Difference]: With dead ends: 163 [2023-12-15 20:15:37,679 INFO L226 Difference]: Without dead ends: 81 [2023-12-15 20:15:37,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 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 20:15:37,687 INFO L413 NwaCegarLoop]: 128 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, 128 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 20:15:37,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:15:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-15 20:15:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-15 20:15:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 52 states have internal predecessors, (77), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 20:15:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 131 transitions. [2023-12-15 20:15:37,728 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 131 transitions. Word has length 170 [2023-12-15 20:15:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:15:37,728 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 131 transitions. [2023-12-15 20:15:37,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-15 20:15:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 131 transitions. [2023-12-15 20:15:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 20:15:37,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:15:37,731 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:37,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:15:37,937 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 20:15:37,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:15:37,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:15:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2101254502, now seen corresponding path program 1 times [2023-12-15 20:15:37,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:15:37,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670183591] [2023-12-15 20:15:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:37,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:15:38,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:15:38,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429221312] [2023-12-15 20:15:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:38,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:38,016 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 20:15:38,061 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 20:15:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:38,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:15:38,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:15:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 20:15:38,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:15:38,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:15:38,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670183591] [2023-12-15 20:15:38,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:15:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429221312] [2023-12-15 20:15:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429221312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:15:38,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:15:38,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:15:38,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286038379] [2023-12-15 20:15:38,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:15:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:15:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:15:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:15:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:15:38,384 INFO L87 Difference]: Start difference. First operand 81 states and 131 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:15:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:15:38,525 INFO L93 Difference]: Finished difference Result 242 states and 392 transitions. [2023-12-15 20:15:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:15:38,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 170 [2023-12-15 20:15:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:15:38,529 INFO L225 Difference]: With dead ends: 242 [2023-12-15 20:15:38,530 INFO L226 Difference]: Without dead ends: 162 [2023-12-15 20:15:38,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 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 20:15:38,531 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 80 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:15:38,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 378 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:15:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-15 20:15:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2023-12-15 20:15:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 71 states have (on average 1.352112676056338) internal successors, (96), 71 states have internal predecessors, (96), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 20:15:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 204 transitions. [2023-12-15 20:15:38,574 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 204 transitions. Word has length 170 [2023-12-15 20:15:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:15:38,576 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 204 transitions. [2023-12-15 20:15:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:15:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 204 transitions. [2023-12-15 20:15:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 20:15:38,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:15:38,578 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:38,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 20:15:38,784 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 20:15:38,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:15:38,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:15:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash 995021713, now seen corresponding path program 1 times [2023-12-15 20:15:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:15:38,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665334891] [2023-12-15 20:15:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:38,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:15:38,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:15:38,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901927928] [2023-12-15 20:15:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:38,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:38,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:38,842 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 20:15:38,870 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 20:15:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:38,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 20:15:38,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:15:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 20:15:39,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:15:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:15:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665334891] [2023-12-15 20:15:39,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:15:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901927928] [2023-12-15 20:15:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901927928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:15:39,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:15:39,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:15:39,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141047775] [2023-12-15 20:15:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:15:39,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:15:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:15:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:15:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:15:39,222 INFO L87 Difference]: Start difference. First operand 128 states and 204 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:15:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:15:39,546 INFO L93 Difference]: Finished difference Result 316 states and 510 transitions. [2023-12-15 20:15:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 20:15:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 171 [2023-12-15 20:15:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:15:39,548 INFO L225 Difference]: With dead ends: 316 [2023-12-15 20:15:39,548 INFO L226 Difference]: Without dead ends: 236 [2023-12-15 20:15:39,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:15:39,550 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 182 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:15:39,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 566 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:15:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-15 20:15:39,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 218. [2023-12-15 20:15:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.4210526315789473) internal successors, (189), 133 states have internal predecessors, (189), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-15 20:15:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 351 transitions. [2023-12-15 20:15:39,571 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 351 transitions. Word has length 171 [2023-12-15 20:15:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:15:39,572 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 351 transitions. [2023-12-15 20:15:39,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:15:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 351 transitions. [2023-12-15 20:15:39,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 20:15:39,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:15:39,574 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:39,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 20:15:39,781 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 20:15:39,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:15:39,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:15:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2077068387, now seen corresponding path program 1 times [2023-12-15 20:15:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:15:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008961562] [2023-12-15 20:15:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:15:39,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:15:39,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073324000] [2023-12-15 20:15:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:39,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:39,818 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 20:15:39,843 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 20:15:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:39,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:15:39,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:15:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-15 20:15:40,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:15:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-15 20:15:40,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:15:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008961562] [2023-12-15 20:15:40,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:15:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073324000] [2023-12-15 20:15:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073324000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:15:40,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:15:40,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-15 20:15:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881756125] [2023-12-15 20:15:40,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:15:40,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:15:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:15:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:15:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:15:40,285 INFO L87 Difference]: Start difference. First operand 218 states and 351 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-15 20:15:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:15:40,534 INFO L93 Difference]: Finished difference Result 412 states and 649 transitions. [2023-12-15 20:15:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 20:15:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 172 [2023-12-15 20:15:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:15:40,537 INFO L225 Difference]: With dead ends: 412 [2023-12-15 20:15:40,537 INFO L226 Difference]: Without dead ends: 242 [2023-12-15 20:15:40,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:15:40,538 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 243 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:15:40,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 213 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:15:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-15 20:15:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 218. [2023-12-15 20:15:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 130 states have (on average 1.3384615384615384) internal successors, (174), 130 states have internal predecessors, (174), 81 states have call successors, (81), 6 states have call predecessors, (81), 6 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-15 20:15:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 336 transitions. [2023-12-15 20:15:40,569 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 336 transitions. Word has length 172 [2023-12-15 20:15:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:15:40,571 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 336 transitions. [2023-12-15 20:15:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-15 20:15:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 336 transitions. [2023-12-15 20:15:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-15 20:15:40,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:15:40,576 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:40,599 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 20:15:40,782 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 20:15:40,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:15:40,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:15:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1122294730, now seen corresponding path program 1 times [2023-12-15 20:15:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:15:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118694818] [2023-12-15 20:15:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:15:40,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:15:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294435076] [2023-12-15 20:15:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:40,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:40,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:40,842 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 20:15:40,901 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 20:15:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:41,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:15:41,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:15:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 308 proven. 69 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2023-12-15 20:15:41,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:15:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-15 20:15:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:15:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118694818] [2023-12-15 20:15:41,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:15:41,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294435076] [2023-12-15 20:15:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294435076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:15:41,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:15:41,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-15 20:15:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5109325] [2023-12-15 20:15:41,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:15:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 20:15:41,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:15:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 20:15:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:15:42,000 INFO L87 Difference]: Start difference. First operand 218 states and 336 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-15 20:15:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:15:43,136 INFO L93 Difference]: Finished difference Result 477 states and 723 transitions. [2023-12-15 20:15:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 20:15:43,137 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 174 [2023-12-15 20:15:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:15:43,138 INFO L225 Difference]: With dead ends: 477 [2023-12-15 20:15:43,138 INFO L226 Difference]: Without dead ends: 311 [2023-12-15 20:15:43,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2023-12-15 20:15:43,140 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 621 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 20:15:43,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 418 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 20:15:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-15 20:15:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 230. [2023-12-15 20:15:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.3021582733812949) internal successors, (181), 139 states have internal predecessors, (181), 81 states have call successors, (81), 9 states have call predecessors, (81), 9 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-15 20:15:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 343 transitions. [2023-12-15 20:15:43,167 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 343 transitions. Word has length 174 [2023-12-15 20:15:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:15:43,167 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 343 transitions. [2023-12-15 20:15:43,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-15 20:15:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 343 transitions. [2023-12-15 20:15:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-15 20:15:43,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:15:43,169 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:43,184 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 20:15:43,374 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 20:15:43,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:15:43,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:15:43,375 INFO L85 PathProgramCache]: Analyzing trace with hash 903440012, now seen corresponding path program 1 times [2023-12-15 20:15:43,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:15:43,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685281356] [2023-12-15 20:15:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:15:43,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:15:43,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545277080] [2023-12-15 20:15:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:15:43,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:43,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:15:43,394 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 20:15:43,413 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 20:15:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:15:43,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-15 20:15:43,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:15:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 696 proven. 324 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-12-15 20:15:45,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:16:44,163 WARN L293 SmtUtils]: Spent 16.72s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-15 20:16:52,905 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:16:52,905 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 20:16:53,008 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:16:53,014 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 20:16:53,209 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 20:16:53,209 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 175 with TraceHistMax 27,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-1 context. [2023-12-15 20:16:53,213 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-15 20:16:53,215 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:16:53,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:16:53 BoogieIcfgContainer [2023-12-15 20:16:53,217 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:16:53,217 INFO L158 Benchmark]: Toolchain (without parser) took 77243.16ms. Allocated memory was 272.6MB in the beginning and 414.2MB in the end (delta: 141.6MB). Free memory was 219.8MB in the beginning and 249.4MB in the end (delta: -29.5MB). Peak memory consumption was 113.1MB. Max. memory is 8.0GB. [2023-12-15 20:16:53,217 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 215.0MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:16:53,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.86ms. Allocated memory is still 272.6MB. Free memory was 219.8MB in the beginning and 204.1MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:16:53,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.70ms. Allocated memory is still 272.6MB. Free memory was 204.1MB in the beginning and 198.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:16:53,218 INFO L158 Benchmark]: Boogie Preprocessor took 139.60ms. Allocated memory is still 272.6MB. Free memory was 198.9MB in the beginning and 191.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 20:16:53,218 INFO L158 Benchmark]: RCFGBuilder took 579.07ms. Allocated memory is still 272.6MB. Free memory was 191.5MB in the beginning and 159.5MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 20:16:53,218 INFO L158 Benchmark]: TraceAbstraction took 76168.59ms. Allocated memory was 272.6MB in the beginning and 414.2MB in the end (delta: 141.6MB). Free memory was 158.5MB in the beginning and 249.4MB in the end (delta: -90.9MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB. [2023-12-15 20:16:53,219 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 215.0MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.86ms. Allocated memory is still 272.6MB. Free memory was 219.8MB in the beginning and 204.1MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.70ms. Allocated memory is still 272.6MB. Free memory was 204.1MB in the beginning and 198.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 139.60ms. Allocated memory is still 272.6MB. Free memory was 198.9MB in the beginning and 191.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 579.07ms. Allocated memory is still 272.6MB. Free memory was 191.5MB in the beginning and 159.5MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 76168.59ms. Allocated memory was 272.6MB in the beginning and 414.2MB in the end (delta: 141.6MB). Free memory was 158.5MB in the beginning and 249.4MB in the end (delta: -90.9MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 175 with TraceHistMax 27,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.1s, OverallIterations: 6, TraceHistogramMax: 27, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1129 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1126 mSDsluCounter, 1703 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1059 mSDsCounter, 590 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 945 IncrementalHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 590 mSolverCounterUnsat, 644 mSDtfsCounter, 945 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1229 GetRequests, 1175 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 157 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1027 NumberOfCodeBlocks, 1027 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1196 ConstructedInterpolants, 0 QuantifiedInterpolants, 5078 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2104 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 9546/9828 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