/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:59:21,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:59:21,848 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 03:59:21,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:59:21,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:59:21,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:59:21,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:59:21,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:59:21,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:59:21,879 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:59:21,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:59:21,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:59:21,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:59:21,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:59:21,881 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:59:21,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:59:21,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:59:21,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:59:21,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:59:21,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:59:21,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:59:21,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:59:21,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:59:21,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:59:21,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:59:21,883 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:59:21,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:59:21,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:59:21,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:59:21,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:59:21,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:59:21,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:59:21,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:59:21,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:59:21,890 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:59:21,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:59:21,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:59:21,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:59:22,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:59:22,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:59:22,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:59:22,239 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:59:22,252 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:59:22,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-42.i [2023-12-16 03:59:23,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:59:23,681 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:59:23,682 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-42.i [2023-12-16 03:59:23,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51a29fb2/e33b33f5434d41729ba687ecd109f4ea/FLAG896f6def9 [2023-12-16 03:59:23,698 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51a29fb2/e33b33f5434d41729ba687ecd109f4ea [2023-12-16 03:59:23,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:59:23,701 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:59:23,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:59:23,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:59:23,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:59:23,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:59:23" (1/1) ... [2023-12-16 03:59:23,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40107f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:23, skipping insertion in model container [2023-12-16 03:59:23,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:59:23" (1/1) ... [2023-12-16 03:59:23,751 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:59:23,864 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-42.i[916,929] [2023-12-16 03:59:24,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:59:24,011 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:59:24,026 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-42.i[916,929] [2023-12-16 03:59:24,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:59:24,144 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:59:24,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24 WrapperNode [2023-12-16 03:59:24,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:59:24,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:59:24,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:59:24,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:59:24,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,275 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 378 [2023-12-16 03:59:24,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:59:24,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:59:24,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:59:24,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:59:24,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,329 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 03:59:24,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:59:24,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:59:24,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:59:24,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:59:24,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (1/1) ... [2023-12-16 03:59:24,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:59:24,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:24,392 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 03:59:24,396 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 03:59:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:59:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:59:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:59:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:59:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:59:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:59:24,511 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:59:24,514 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:59:25,067 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:59:25,099 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:59:25,099 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:59:25,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:59:25 BoogieIcfgContainer [2023-12-16 03:59:25,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:59:25,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:59:25,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:59:25,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:59:25,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:59:23" (1/3) ... [2023-12-16 03:59:25,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f6c387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:59:25, skipping insertion in model container [2023-12-16 03:59:25,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:24" (2/3) ... [2023-12-16 03:59:25,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f6c387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:59:25, skipping insertion in model container [2023-12-16 03:59:25,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:59:25" (3/3) ... [2023-12-16 03:59:25,106 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-42.i [2023-12-16 03:59:25,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:59:25,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:59:25,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:59:25,165 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;@76900e1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:59:25,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:59:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 95 states have (on average 1.5578947368421052) internal successors, (148), 96 states have internal predecessors, (148), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 03:59:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-16 03:59:25,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:25,193 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:25,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:25,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 534348162, now seen corresponding path program 1 times [2023-12-16 03:59:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:25,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620429811] [2023-12-16 03:59:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620429811] [2023-12-16 03:59:25,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:59:25,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291896294] [2023-12-16 03:59:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:25,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:25,488 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 03:59:25,524 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 03:59:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:25,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:59:25,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-16 03:59:25,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:59:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291896294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:59:25,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:59:25,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:59:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642289566] [2023-12-16 03:59:25,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:59:25,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:59:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:59:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:59:25,834 INFO L87 Difference]: Start difference. First operand has 141 states, 95 states have (on average 1.5578947368421052) internal successors, (148), 96 states have internal predecessors, (148), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:25,867 INFO L93 Difference]: Finished difference Result 279 states and 509 transitions. [2023-12-16 03:59:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:59:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 278 [2023-12-16 03:59:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:25,875 INFO L225 Difference]: With dead ends: 279 [2023-12-16 03:59:25,876 INFO L226 Difference]: Without dead ends: 139 [2023-12-16 03:59:25,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 277 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 03:59:25,880 INFO L413 NwaCegarLoop]: 223 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, 223 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 03:59:25,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:59:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-16 03:59:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-12-16 03:59:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 94 states have internal predecessors, (140), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 03:59:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 226 transitions. [2023-12-16 03:59:25,918 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 226 transitions. Word has length 278 [2023-12-16 03:59:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:25,919 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 226 transitions. [2023-12-16 03:59:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 226 transitions. [2023-12-16 03:59:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-16 03:59:25,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:25,924 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:25,966 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 03:59:26,128 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 03:59:26,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:26,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1836330310, now seen corresponding path program 1 times [2023-12-16 03:59:26,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:26,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365934354] [2023-12-16 03:59:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:26,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:26,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:26,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199329417] [2023-12-16 03:59:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:26,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:26,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:26,297 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 03:59:26,306 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 03:59:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:26,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:59:26,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-16 03:59:26,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:59:26,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365934354] [2023-12-16 03:59:26,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199329417] [2023-12-16 03:59:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199329417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:59:26,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:59:26,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:59:26,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590429287] [2023-12-16 03:59:26,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:59:26,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:59:26,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:26,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:59:26,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:59:26,793 INFO L87 Difference]: Start difference. First operand 139 states and 226 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:26,841 INFO L93 Difference]: Finished difference Result 281 states and 456 transitions. [2023-12-16 03:59:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:59:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 279 [2023-12-16 03:59:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:26,844 INFO L225 Difference]: With dead ends: 281 [2023-12-16 03:59:26,844 INFO L226 Difference]: Without dead ends: 143 [2023-12-16 03:59:26,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:59:26,846 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 3 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:26,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 658 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:59:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-16 03:59:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2023-12-16 03:59:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 96 states have (on average 1.4791666666666667) internal successors, (142), 96 states have internal predecessors, (142), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 03:59:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 228 transitions. [2023-12-16 03:59:26,856 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 228 transitions. Word has length 279 [2023-12-16 03:59:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:26,856 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 228 transitions. [2023-12-16 03:59:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 228 transitions. [2023-12-16 03:59:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-16 03:59:26,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:26,859 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:26,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:59:27,067 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 03:59:27,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:27,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1836389892, now seen corresponding path program 1 times [2023-12-16 03:59:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988974939] [2023-12-16 03:59:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:27,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:27,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492255478] [2023-12-16 03:59:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:27,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:27,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:27,123 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 03:59:27,126 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 03:59:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:27,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:59:27,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-16 03:59:27,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:59:27,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988974939] [2023-12-16 03:59:27,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492255478] [2023-12-16 03:59:27,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492255478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:59:27,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:59:27,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:59:27,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8400430] [2023-12-16 03:59:27,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:59:27,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:59:27,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:59:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:59:27,338 INFO L87 Difference]: Start difference. First operand 141 states and 228 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:27,396 INFO L93 Difference]: Finished difference Result 410 states and 660 transitions. [2023-12-16 03:59:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:59:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 279 [2023-12-16 03:59:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:27,402 INFO L225 Difference]: With dead ends: 410 [2023-12-16 03:59:27,402 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 03:59:27,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 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 03:59:27,404 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 196 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:27,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 542 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:59:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 03:59:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 177. [2023-12-16 03:59:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 132 states have (on average 1.5378787878787878) internal successors, (203), 132 states have internal predecessors, (203), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 03:59:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 289 transitions. [2023-12-16 03:59:27,438 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 289 transitions. Word has length 279 [2023-12-16 03:59:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:27,439 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 289 transitions. [2023-12-16 03:59:27,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 289 transitions. [2023-12-16 03:59:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-16 03:59:27,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:27,441 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:27,452 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 03:59:27,646 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 03:59:27,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:27,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1617535174, now seen corresponding path program 1 times [2023-12-16 03:59:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:27,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071387391] [2023-12-16 03:59:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:27,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292536747] [2023-12-16 03:59:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:27,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:27,691 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 03:59:27,716 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 03:59:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:27,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:59:27,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 918 proven. 108 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2023-12-16 03:59:28,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:59:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 18 proven. 108 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-16 03:59:28,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071387391] [2023-12-16 03:59:28,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292536747] [2023-12-16 03:59:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292536747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:59:28,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:59:28,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:59:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325126050] [2023-12-16 03:59:28,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:59:28,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:59:28,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:59:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:59:28,348 INFO L87 Difference]: Start difference. First operand 177 states and 289 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 03:59:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:28,581 INFO L93 Difference]: Finished difference Result 359 states and 582 transitions. [2023-12-16 03:59:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:59:28,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 279 [2023-12-16 03:59:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:28,583 INFO L225 Difference]: With dead ends: 359 [2023-12-16 03:59:28,583 INFO L226 Difference]: Without dead ends: 183 [2023-12-16 03:59:28,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 550 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:59:28,587 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 187 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:28,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 420 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 03:59:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-16 03:59:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-12-16 03:59:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 135 states have (on average 1.5037037037037038) internal successors, (203), 135 states have internal predecessors, (203), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 03:59:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 289 transitions. [2023-12-16 03:59:28,602 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 289 transitions. Word has length 279 [2023-12-16 03:59:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:28,602 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 289 transitions. [2023-12-16 03:59:28,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 03:59:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 289 transitions. [2023-12-16 03:59:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-16 03:59:28,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:28,605 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:28,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 03:59:28,812 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 03:59:28,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:28,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash -728675906, now seen corresponding path program 1 times [2023-12-16 03:59:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:28,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020130150] [2023-12-16 03:59:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:28,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:28,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:28,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598346862] [2023-12-16 03:59:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:28,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:28,846 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 03:59:28,870 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 03:59:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:29,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 03:59:29,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 918 proven. 108 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2023-12-16 03:59:29,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:59:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-16 03:59:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020130150] [2023-12-16 03:59:30,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598346862] [2023-12-16 03:59:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598346862] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 03:59:30,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 03:59:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2023-12-16 03:59:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383964528] [2023-12-16 03:59:30,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:59:30,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:59:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:59:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:59:30,330 INFO L87 Difference]: Start difference. First operand 181 states and 289 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 03:59:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:31,005 INFO L93 Difference]: Finished difference Result 1059 states and 1663 transitions. [2023-12-16 03:59:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:59:31,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 279 [2023-12-16 03:59:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:31,010 INFO L225 Difference]: With dead ends: 1059 [2023-12-16 03:59:31,010 INFO L226 Difference]: Without dead ends: 879 [2023-12-16 03:59:31,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-12-16 03:59:31,011 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 760 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:31,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 2353 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 03:59:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-16 03:59:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 606. [2023-12-16 03:59:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 425 states have (on average 1.4211764705882353) internal successors, (604), 425 states have internal predecessors, (604), 172 states have call successors, (172), 8 states have call predecessors, (172), 8 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-16 03:59:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 948 transitions. [2023-12-16 03:59:31,062 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 948 transitions. Word has length 279 [2023-12-16 03:59:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:31,063 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 948 transitions. [2023-12-16 03:59:31,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 03:59:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 948 transitions. [2023-12-16 03:59:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-16 03:59:31,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:31,065 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:31,074 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 03:59:31,272 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 03:59:31,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:31,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:31,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1988029785, now seen corresponding path program 1 times [2023-12-16 03:59:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:31,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611171921] [2023-12-16 03:59:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:31,319 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:31,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748734573] [2023-12-16 03:59:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:31,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:31,324 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 03:59:31,347 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 03:59:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:31,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 03:59:31,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2012 proven. 219 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2023-12-16 03:59:32,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:59:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 129 proven. 120 refuted. 0 times theorem prover too weak. 3363 trivial. 0 not checked. [2023-12-16 03:59:32,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:32,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611171921] [2023-12-16 03:59:32,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:32,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748734573] [2023-12-16 03:59:32,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748734573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:59:32,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:59:32,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 22 [2023-12-16 03:59:32,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453091227] [2023-12-16 03:59:32,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:59:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 03:59:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 03:59:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-16 03:59:32,983 INFO L87 Difference]: Start difference. First operand 606 states and 948 transitions. Second operand has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 7 states have call successors, (86), 5 states have call predecessors, (86), 10 states have return successors, (86), 7 states have call predecessors, (86), 7 states have call successors, (86) [2023-12-16 03:59:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:37,192 INFO L93 Difference]: Finished difference Result 3333 states and 5030 transitions. [2023-12-16 03:59:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-16 03:59:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 7 states have call successors, (86), 5 states have call predecessors, (86), 10 states have return successors, (86), 7 states have call predecessors, (86), 7 states have call successors, (86) Word has length 281 [2023-12-16 03:59:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:37,231 INFO L225 Difference]: With dead ends: 3333 [2023-12-16 03:59:37,231 INFO L226 Difference]: Without dead ends: 2728 [2023-12-16 03:59:37,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1627, Invalid=4225, Unknown=0, NotChecked=0, Total=5852 [2023-12-16 03:59:37,235 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2798 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 1467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 3599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1467 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:37,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 2110 Invalid, 3599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1467 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 03:59:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2023-12-16 03:59:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1663. [2023-12-16 03:59:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1193 states have (on average 1.383067896060352) internal successors, (1650), 1201 states have internal predecessors, (1650), 425 states have call successors, (425), 44 states have call predecessors, (425), 44 states have return successors, (425), 417 states have call predecessors, (425), 425 states have call successors, (425) [2023-12-16 03:59:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2500 transitions. [2023-12-16 03:59:37,668 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2500 transitions. Word has length 281 [2023-12-16 03:59:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:37,669 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2500 transitions. [2023-12-16 03:59:37,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 7 states have call successors, (86), 5 states have call predecessors, (86), 10 states have return successors, (86), 7 states have call predecessors, (86), 7 states have call successors, (86) [2023-12-16 03:59:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2500 transitions. [2023-12-16 03:59:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-16 03:59:37,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:37,672 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:37,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 03:59:37,873 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 [2023-12-16 03:59:37,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:37,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2060416343, now seen corresponding path program 1 times [2023-12-16 03:59:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:37,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847185305] [2023-12-16 03:59:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:37,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:37,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647168262] [2023-12-16 03:59:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:37,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:37,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:37,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:59:37,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:59:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:38,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 03:59:38,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1248 proven. 99 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2023-12-16 03:59:38,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:59:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 27 proven. 99 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-16 03:59:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847185305] [2023-12-16 03:59:38,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:38,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647168262] [2023-12-16 03:59:38,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647168262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:59:38,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:59:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 03:59:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330713585] [2023-12-16 03:59:38,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:59:38,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 03:59:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 03:59:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-16 03:59:38,658 INFO L87 Difference]: Start difference. First operand 1663 states and 2500 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-16 03:59:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:39,367 INFO L93 Difference]: Finished difference Result 2956 states and 4348 transitions. [2023-12-16 03:59:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 03:59:39,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 281 [2023-12-16 03:59:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:39,387 INFO L225 Difference]: With dead ends: 2956 [2023-12-16 03:59:39,387 INFO L226 Difference]: Without dead ends: 1868 [2023-12-16 03:59:39,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 551 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-12-16 03:59:39,408 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 333 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:39,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 693 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:59:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-12-16 03:59:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1483. [2023-12-16 03:59:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1058 states have (on average 1.3525519848771266) internal successors, (1431), 1064 states have internal predecessors, (1431), 376 states have call successors, (376), 48 states have call predecessors, (376), 48 states have return successors, (376), 370 states have call predecessors, (376), 376 states have call successors, (376) [2023-12-16 03:59:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2183 transitions. [2023-12-16 03:59:39,658 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2183 transitions. Word has length 281 [2023-12-16 03:59:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:39,659 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 2183 transitions. [2023-12-16 03:59:39,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-16 03:59:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2183 transitions. [2023-12-16 03:59:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-16 03:59:39,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:39,677 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:39,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 03:59:39,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:39,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:39,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:39,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1144412741, now seen corresponding path program 1 times [2023-12-16 03:59:39,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:39,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479910008] [2023-12-16 03:59:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:39,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:39,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227179462] [2023-12-16 03:59:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:39,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:59:39,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:59:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:40,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 03:59:40,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 918 proven. 108 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2023-12-16 03:59:40,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:59:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 18 proven. 108 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-16 03:59:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479910008] [2023-12-16 03:59:41,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227179462] [2023-12-16 03:59:41,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227179462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:59:41,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:59:41,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 03:59:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612336446] [2023-12-16 03:59:41,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:59:41,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 03:59:41,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:41,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 03:59:41,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:59:41,429 INFO L87 Difference]: Start difference. First operand 1483 states and 2183 transitions. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 4 states have call successors, (86), 3 states have call predecessors, (86), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-12-16 03:59:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:43,342 INFO L93 Difference]: Finished difference Result 4050 states and 5946 transitions. [2023-12-16 03:59:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 03:59:43,343 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 4 states have call successors, (86), 3 states have call predecessors, (86), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) Word has length 282 [2023-12-16 03:59:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:43,351 INFO L225 Difference]: With dead ends: 4050 [2023-12-16 03:59:43,351 INFO L226 Difference]: Without dead ends: 2547 [2023-12-16 03:59:43,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=697, Unknown=0, NotChecked=0, Total=992 [2023-12-16 03:59:43,356 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1579 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:43,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1577 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 03:59:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-12-16 03:59:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 1734. [2023-12-16 03:59:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1302 states have (on average 1.390168970814132) internal successors, (1810), 1307 states have internal predecessors, (1810), 380 states have call successors, (380), 51 states have call predecessors, (380), 51 states have return successors, (380), 375 states have call predecessors, (380), 380 states have call successors, (380) [2023-12-16 03:59:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2570 transitions. [2023-12-16 03:59:43,521 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2570 transitions. Word has length 282 [2023-12-16 03:59:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:43,521 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2570 transitions. [2023-12-16 03:59:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 4 states have call successors, (86), 3 states have call predecessors, (86), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-12-16 03:59:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2570 transitions. [2023-12-16 03:59:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-16 03:59:43,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:43,524 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:43,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 03:59:43,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 03:59:43,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:43,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1803944263, now seen corresponding path program 1 times [2023-12-16 03:59:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:43,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809068449] [2023-12-16 03:59:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:43,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:43,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738440324] [2023-12-16 03:59:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:43,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:43,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:43,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:59:43,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 03:59:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:44,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 03:59:44,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-16 03:59:44,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:59:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809068449] [2023-12-16 03:59:44,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738440324] [2023-12-16 03:59:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738440324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:59:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:59:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:59:44,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707583038] [2023-12-16 03:59:44,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:59:44,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 03:59:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 03:59:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 03:59:44,543 INFO L87 Difference]: Start difference. First operand 1734 states and 2570 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:44,927 INFO L93 Difference]: Finished difference Result 3581 states and 5301 transitions. [2023-12-16 03:59:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 03:59:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 282 [2023-12-16 03:59:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:44,933 INFO L225 Difference]: With dead ends: 3581 [2023-12-16 03:59:44,933 INFO L226 Difference]: Without dead ends: 1828 [2023-12-16 03:59:44,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:59:44,936 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 363 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:44,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 936 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:59:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2023-12-16 03:59:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1388. [2023-12-16 03:59:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1015 states have (on average 1.373399014778325) internal successors, (1394), 1019 states have internal predecessors, (1394), 329 states have call successors, (329), 43 states have call predecessors, (329), 43 states have return successors, (329), 325 states have call predecessors, (329), 329 states have call successors, (329) [2023-12-16 03:59:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2052 transitions. [2023-12-16 03:59:45,015 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2052 transitions. Word has length 282 [2023-12-16 03:59:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:45,016 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 2052 transitions. [2023-12-16 03:59:45,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 03:59:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2052 transitions. [2023-12-16 03:59:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-16 03:59:45,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:45,017 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:45,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 03:59:45,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:45,223 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:45,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1729710199, now seen corresponding path program 1 times [2023-12-16 03:59:45,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:45,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029646736] [2023-12-16 03:59:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:45,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:45,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437306211] [2023-12-16 03:59:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:45,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:45,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:45,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:59:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 03:59:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:45,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 03:59:45,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2183 proven. 237 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2023-12-16 03:59:46,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:59:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 222 proven. 147 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2023-12-16 03:59:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:59:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029646736] [2023-12-16 03:59:47,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:59:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437306211] [2023-12-16 03:59:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437306211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:59:47,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:59:47,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 28 [2023-12-16 03:59:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514759391] [2023-12-16 03:59:47,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:59:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 03:59:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:59:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 03:59:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=548, Unknown=0, NotChecked=0, Total=756 [2023-12-16 03:59:47,387 INFO L87 Difference]: Start difference. First operand 1388 states and 2052 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 9 states have call successors, (86), 6 states have call predecessors, (86), 13 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86) [2023-12-16 03:59:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:59:50,796 INFO L93 Difference]: Finished difference Result 1853 states and 2691 transitions. [2023-12-16 03:59:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-16 03:59:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 9 states have call successors, (86), 6 states have call predecessors, (86), 13 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86) Word has length 282 [2023-12-16 03:59:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:59:50,800 INFO L225 Difference]: With dead ends: 1853 [2023-12-16 03:59:50,800 INFO L226 Difference]: Without dead ends: 987 [2023-12-16 03:59:50,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3576 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2604, Invalid=6902, Unknown=0, NotChecked=0, Total=9506 [2023-12-16 03:59:50,804 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2014 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:50,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 1628 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 03:59:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-12-16 03:59:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 518. [2023-12-16 03:59:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 358 states have internal predecessors, (466), 137 states have call successors, (137), 23 states have call predecessors, (137), 23 states have return successors, (137), 136 states have call predecessors, (137), 137 states have call successors, (137) [2023-12-16 03:59:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 740 transitions. [2023-12-16 03:59:50,849 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 740 transitions. Word has length 282 [2023-12-16 03:59:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:59:50,849 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 740 transitions. [2023-12-16 03:59:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 9 states have call successors, (86), 6 states have call predecessors, (86), 13 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86) [2023-12-16 03:59:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 740 transitions. [2023-12-16 03:59:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-16 03:59:50,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:59:50,851 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:50,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 03:59:51,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 03:59:51,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:59:51,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:59:51,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1858461762, now seen corresponding path program 1 times [2023-12-16 03:59:51,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:59:51,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103453936] [2023-12-16 03:59:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:59:51,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:59:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058646601] [2023-12-16 03:59:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:59:51,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:51,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:59:51,092 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:59:51,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 03:59:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:59:51,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 03:59:51,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:59:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2400 proven. 180 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2023-12-16 03:59:53,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:00:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 123 proven. 126 refuted. 0 times theorem prover too weak. 3363 trivial. 0 not checked. [2023-12-16 04:00:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103453936] [2023-12-16 04:00:22,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058646601] [2023-12-16 04:00:22,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058646601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:00:22,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:00:22,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2023-12-16 04:00:22,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174008415] [2023-12-16 04:00:22,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:00:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 04:00:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 04:00:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:00:22,569 INFO L87 Difference]: Start difference. First operand 518 states and 740 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 8 states have call successors, (86), 5 states have call predecessors, (86), 10 states have return successors, (86), 8 states have call predecessors, (86), 8 states have call successors, (86) [2023-12-16 04:00:34,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 04:00:37,866 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 04:00:37,866 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:00:38,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 04:00:38,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1140, Invalid=3830, Unknown=0, NotChecked=0, Total=4970 [2023-12-16 04:00:38,098 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1005 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:38,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1979 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-16 04:00:38,100 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:00:38,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-16 04:00:38,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:00:38,306 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (518states) and FLOYD_HOARE automaton (currently 45 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-4-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-2-1 context. [2023-12-16 04:00:38,309 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:00:38,311 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:00:38,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:00:38 BoogieIcfgContainer [2023-12-16 04:00:38,313 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:00:38,313 INFO L158 Benchmark]: Toolchain (without parser) took 74612.67ms. Allocated memory was 175.1MB in the beginning and 865.1MB in the end (delta: 690.0MB). Free memory was 139.2MB in the beginning and 724.3MB in the end (delta: -585.1MB). Peak memory consumption was 106.7MB. Max. memory is 8.0GB. [2023-12-16 04:00:38,313 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 175.1MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:00:38,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.13ms. Allocated memory is still 175.1MB. Free memory was 138.9MB in the beginning and 113.9MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 04:00:38,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.09ms. Allocated memory is still 175.1MB. Free memory was 113.9MB in the beginning and 103.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:00:38,314 INFO L158 Benchmark]: Boogie Preprocessor took 84.87ms. Allocated memory is still 175.1MB. Free memory was 103.6MB in the beginning and 84.0MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-16 04:00:38,314 INFO L158 Benchmark]: RCFGBuilder took 737.43ms. Allocated memory is still 175.1MB. Free memory was 83.6MB in the beginning and 96.8MB in the end (delta: -13.2MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2023-12-16 04:00:38,314 INFO L158 Benchmark]: TraceAbstraction took 73211.44ms. Allocated memory was 175.1MB in the beginning and 865.1MB in the end (delta: 690.0MB). Free memory was 96.3MB in the beginning and 724.3MB in the end (delta: -628.1MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2023-12-16 04:00:38,315 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 175.1MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 444.13ms. Allocated memory is still 175.1MB. Free memory was 138.9MB in the beginning and 113.9MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 130.09ms. Allocated memory is still 175.1MB. Free memory was 113.9MB in the beginning and 103.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 84.87ms. Allocated memory is still 175.1MB. Free memory was 103.6MB in the beginning and 84.0MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * RCFGBuilder took 737.43ms. Allocated memory is still 175.1MB. Free memory was 83.6MB in the beginning and 96.8MB in the end (delta: -13.2MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. * TraceAbstraction took 73211.44ms. Allocated memory was 175.1MB in the beginning and 865.1MB in the end (delta: 690.0MB). Free memory was 96.3MB in the beginning and 724.3MB in the end (delta: -628.1MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (518states) and FLOYD_HOARE automaton (currently 45 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-4-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.2s, OverallIterations: 11, TraceHistogramMax: 43, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 27.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9288 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9238 mSDsluCounter, 13119 SdHoareTripleChecker+Invalid, 14.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9888 mSDsCounter, 4110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8816 IncrementalHoareTripleChecker+Invalid, 12926 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4110 mSolverCounterUnsat, 3231 mSDtfsCounter, 8816 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5279 GetRequests, 4959 SyntacticMatches, 3 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7423 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1734occurred in iteration=8, InterpolantAutomatonStates: 214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 3542 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 38.9s InterpolantComputationTime, 3363 NumberOfCodeBlocks, 3363 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 5034 ConstructedInterpolants, 8 QuantifiedInterpolants, 35388 SizeOfPredicates, 67 NumberOfNonLiveVariables, 7518 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 63249/65016 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