/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:27:32,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:27:32,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:27:32,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:27:32,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:27:32,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:27:32,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:27:32,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:27:32,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:27:32,976 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:27:32,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:27:32,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:27:32,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:27:32,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:27:32,978 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:27:32,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:27:32,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:27:32,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:27:32,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:27:32,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:27:32,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:27:32,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:27:32,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:27:32,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:27:32,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:27:32,980 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:27:32,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:27:32,981 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:27:32,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:27:32,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:27:32,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:27:32,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:27:32,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:27:32,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:27:32,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:27:32,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:27:32,984 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:27:33,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:27:33,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:27:33,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:27:33,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:27:33,205 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:27:33,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i [2023-12-16 03:27:34,230 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:27:34,378 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:27:34,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i [2023-12-16 03:27:34,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5436bebfe/2b715ccac23a4caa9644e9a7dfb8e45a/FLAG705f6bb02 [2023-12-16 03:27:34,405 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5436bebfe/2b715ccac23a4caa9644e9a7dfb8e45a [2023-12-16 03:27:34,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:27:34,414 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:27:34,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:27:34,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:27:34,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:27:34,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d466ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34, skipping insertion in model container [2023-12-16 03:27:34,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:27:34,578 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-ps-co_file-45.i[919,932] [2023-12-16 03:27:34,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:27:34,669 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:27:34,679 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-ps-co_file-45.i[919,932] [2023-12-16 03:27:34,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:27:34,726 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:27:34,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34 WrapperNode [2023-12-16 03:27:34,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:27:34,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:27:34,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:27:34,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:27:34,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,783 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 219 [2023-12-16 03:27:34,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:27:34,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:27:34,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:27:34,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:27:34,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,823 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]. [2023-12-16 03:27:34,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:27:34,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:27:34,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:27:34,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:27:34,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (1/1) ... [2023-12-16 03:27:34,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:27:34,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:34,889 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) [2023-12-16 03:27:34,928 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 [2023-12-16 03:27:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:27:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:27:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:27:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:27:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:27:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:27:35,014 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:27:35,017 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:27:35,363 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:27:35,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:27:35,401 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:27:35,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:27:35 BoogieIcfgContainer [2023-12-16 03:27:35,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:27:35,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:27:35,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:27:35,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:27:35,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:27:34" (1/3) ... [2023-12-16 03:27:35,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a78e743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:27:35, skipping insertion in model container [2023-12-16 03:27:35,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:27:34" (2/3) ... [2023-12-16 03:27:35,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a78e743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:27:35, skipping insertion in model container [2023-12-16 03:27:35,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:27:35" (3/3) ... [2023-12-16 03:27:35,406 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i [2023-12-16 03:27:35,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:27:35,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:27:35,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:27:35,467 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;@77e1e899, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:27:35,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:27:35,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 55 states have internal predecessors, (78), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 03:27:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-16 03:27:35,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:27:35,490 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:27:35,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:27:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:27:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash -863377174, now seen corresponding path program 1 times [2023-12-16 03:27:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:27:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677291798] [2023-12-16 03:27:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:35,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:27:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:35,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:27:35,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677291798] [2023-12-16 03:27:35,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:27:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793588173] [2023-12-16 03:27:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:35,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:27:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:35,703 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) [2023-12-16 03:27:35,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:27:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:35,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:27:35,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:27:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-12-16 03:27:35,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:27:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793588173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:27:35,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:27:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:27:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749828335] [2023-12-16 03:27:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:27:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:27:35,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:27:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:27:36,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:27:36,014 INFO L87 Difference]: Start difference. First operand has 92 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 55 states have internal predecessors, (78), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-16 03:27:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:27:36,058 INFO L93 Difference]: Finished difference Result 181 states and 329 transitions. [2023-12-16 03:27:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:27:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 218 [2023-12-16 03:27:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:27:36,067 INFO L225 Difference]: With dead ends: 181 [2023-12-16 03:27:36,067 INFO L226 Difference]: Without dead ends: 90 [2023-12-16 03:27:36,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:27:36,075 INFO L413 NwaCegarLoop]: 139 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, 139 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 [2023-12-16 03:27:36,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:27:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-16 03:27:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-16 03:27:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 03:27:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 142 transitions. [2023-12-16 03:27:36,122 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 142 transitions. Word has length 218 [2023-12-16 03:27:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:27:36,122 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 142 transitions. [2023-12-16 03:27:36,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-16 03:27:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 142 transitions. [2023-12-16 03:27:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-16 03:27:36,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:27:36,132 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:27:36,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 03:27:36,337 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 [2023-12-16 03:27:36,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:27:36,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:27:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1809819040, now seen corresponding path program 1 times [2023-12-16 03:27:36,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:27:36,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103640865] [2023-12-16 03:27:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:27:36,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:27:36,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253370026] [2023-12-16 03:27:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:36,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:27:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:36,446 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) [2023-12-16 03:27:36,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:27:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:36,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:27:36,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:27:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-16 03:27:36,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:27:36,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:27:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103640865] [2023-12-16 03:27:36,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:27:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253370026] [2023-12-16 03:27:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253370026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:27:36,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:27:36,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:27:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342993184] [2023-12-16 03:27:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:27:36,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:27:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:27:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:27:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:27:36,686 INFO L87 Difference]: Start difference. First operand 90 states and 142 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-16 03:27:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:27:36,775 INFO L93 Difference]: Finished difference Result 263 states and 414 transitions. [2023-12-16 03:27:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:27:36,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 218 [2023-12-16 03:27:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:27:36,779 INFO L225 Difference]: With dead ends: 263 [2023-12-16 03:27:36,779 INFO L226 Difference]: Without dead ends: 174 [2023-12-16 03:27:36,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:27:36,780 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 131 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:27:36,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 256 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:27:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-16 03:27:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2023-12-16 03:27:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 99 states have (on average 1.2828282828282829) internal successors, (127), 99 states have internal predecessors, (127), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-16 03:27:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 267 transitions. [2023-12-16 03:27:36,818 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 267 transitions. Word has length 218 [2023-12-16 03:27:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:27:36,819 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 267 transitions. [2023-12-16 03:27:36,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-16 03:27:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 267 transitions. [2023-12-16 03:27:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-16 03:27:36,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:27:36,822 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:27:36,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 03:27:37,025 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 [2023-12-16 03:27:37,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:27:37,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:27:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 920094241, now seen corresponding path program 1 times [2023-12-16 03:27:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:27:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350343558] [2023-12-16 03:27:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:27:37,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:27:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027947825] [2023-12-16 03:27:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:27:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:37,118 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) [2023-12-16 03:27:37,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:27:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:37,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:27:37,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:27:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-16 03:27:37,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:27:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:27:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350343558] [2023-12-16 03:27:37,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:27:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027947825] [2023-12-16 03:27:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027947825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:27:37,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:27:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:27:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044094967] [2023-12-16 03:27:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:27:37,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:27:37,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:27:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:27:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:27:37,807 INFO L87 Difference]: Start difference. First operand 172 states and 267 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-16 03:27:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:27:37,870 INFO L93 Difference]: Finished difference Result 414 states and 645 transitions. [2023-12-16 03:27:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:27:37,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220 [2023-12-16 03:27:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:27:37,873 INFO L225 Difference]: With dead ends: 414 [2023-12-16 03:27:37,873 INFO L226 Difference]: Without dead ends: 243 [2023-12-16 03:27:37,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:27:37,874 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 13 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:27:37,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 244 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:27:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-16 03:27:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 235. [2023-12-16 03:27:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 126 states have (on average 1.2222222222222223) internal successors, (154), 126 states have internal predecessors, (154), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-16 03:27:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 364 transitions. [2023-12-16 03:27:37,922 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 364 transitions. Word has length 220 [2023-12-16 03:27:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:27:37,923 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 364 transitions. [2023-12-16 03:27:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-16 03:27:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 364 transitions. [2023-12-16 03:27:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-16 03:27:37,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:27:37,925 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:27:37,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:27:38,130 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 [2023-12-16 03:27:38,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:27:38,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:27:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1342796067, now seen corresponding path program 1 times [2023-12-16 03:27:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:27:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277736588] [2023-12-16 03:27:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:27:38,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:27:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889119632] [2023-12-16 03:27:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:38,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:27:38,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:38,183 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) [2023-12-16 03:27:38,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:27:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:38,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:27:38,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:27:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-16 03:27:39,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:27:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:27:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277736588] [2023-12-16 03:27:39,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:27:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889119632] [2023-12-16 03:27:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889119632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:27:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:27:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:27:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125394596] [2023-12-16 03:27:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:27:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:27:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:27:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:27:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:27:39,555 INFO L87 Difference]: Start difference. First operand 235 states and 364 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-16 03:27:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:27:39,939 INFO L93 Difference]: Finished difference Result 471 states and 722 transitions. [2023-12-16 03:27:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 03:27:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220 [2023-12-16 03:27:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:27:39,944 INFO L225 Difference]: With dead ends: 471 [2023-12-16 03:27:39,944 INFO L226 Difference]: Without dead ends: 300 [2023-12-16 03:27:39,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:27:39,947 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 190 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:27:39,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 231 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:27:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-16 03:27:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2023-12-16 03:27:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 169 states have (on average 1.2366863905325445) internal successors, (209), 171 states have internal predecessors, (209), 121 states have call successors, (121), 5 states have call predecessors, (121), 5 states have return successors, (121), 119 states have call predecessors, (121), 121 states have call successors, (121) [2023-12-16 03:27:39,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 451 transitions. [2023-12-16 03:27:39,994 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 451 transitions. Word has length 220 [2023-12-16 03:27:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:27:39,995 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 451 transitions. [2023-12-16 03:27:39,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-16 03:27:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 451 transitions. [2023-12-16 03:27:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-16 03:27:39,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:27:39,998 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:27:40,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:27:40,203 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 [2023-12-16 03:27:40,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:27:40,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:27:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash 13703963, now seen corresponding path program 1 times [2023-12-16 03:27:40,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:27:40,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467334867] [2023-12-16 03:27:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:40,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:27:40,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:27:40,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194718162] [2023-12-16 03:27:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:40,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:27:40,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:40,256 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) [2023-12-16 03:27:40,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:27:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:40,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 03:27:40,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:27:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1182 proven. 60 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2023-12-16 03:27:40,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:27:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-12-16 03:27:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:27:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467334867] [2023-12-16 03:27:41,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:27:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194718162] [2023-12-16 03:27:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194718162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:27:41,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:27:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-16 03:27:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739911944] [2023-12-16 03:27:41,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:27:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 03:27:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:27:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 03:27:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:27:41,029 INFO L87 Difference]: Start difference. First operand 296 states and 451 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) [2023-12-16 03:27:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:27:41,245 INFO L93 Difference]: Finished difference Result 439 states and 655 transitions. [2023-12-16 03:27:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:27:41,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) Word has length 220 [2023-12-16 03:27:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:27:41,248 INFO L225 Difference]: With dead ends: 439 [2023-12-16 03:27:41,248 INFO L226 Difference]: Without dead ends: 207 [2023-12-16 03:27:41,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 428 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2023-12-16 03:27:41,249 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 171 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:27:41,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 190 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:27:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-16 03:27:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2023-12-16 03:27:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 107 states have (on average 1.158878504672897) internal successors, (124), 108 states have internal predecessors, (124), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-16 03:27:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 280 transitions. [2023-12-16 03:27:41,302 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 280 transitions. Word has length 220 [2023-12-16 03:27:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:27:41,303 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 280 transitions. [2023-12-16 03:27:41,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) [2023-12-16 03:27:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 280 transitions. [2023-12-16 03:27:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-16 03:27:41,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:27:41,305 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:27:41,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:27:41,505 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 [2023-12-16 03:27:41,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:27:41,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:27:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1333595538, now seen corresponding path program 1 times [2023-12-16 03:27:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:27:41,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704325089] [2023-12-16 03:27:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:27:41,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:27:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075487772] [2023-12-16 03:27:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:27:41,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:27:41,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:27:41,530 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) [2023-12-16 03:27:41,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:27:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:27:41,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 03:27:41,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 03:28:30,009 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 [2023-12-16 03:28:30,022 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 [2023-12-16 03:28:31,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:28:31,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown