/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-48.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 23:52:55,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 23:52:55,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 23:52:55,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 23:52:55,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 23:52:55,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 23:52:55,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 23:52:55,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 23:52:55,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 23:52:55,356 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 23:52:55,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 23:52:55,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 23:52:55,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 23:52:55,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 23:52:55,358 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 23:52:55,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 23:52:55,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 23:52:55,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 23:52:55,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 23:52:55,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 23:52:55,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 23:52:55,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 23:52:55,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 23:52:55,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 23:52:55,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 23:52:55,361 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 23:52:55,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 23:52:55,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 23:52:55,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 23:52:55,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 23:52:55,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 23:52:55,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 23:52:55,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:52:55,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 23:52:55,363 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 23:52:55,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 23:52:55,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 23:52:55,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 23:52:55,563 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 23:52:55,564 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 23:52:55,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i [2023-12-20 23:52:56,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 23:52:56,731 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 23:52:56,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i [2023-12-20 23:52:56,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10459cd70/8f62cb4af7e74313b71bd3b7e5e9d59b/FLAG984335341 [2023-12-20 23:52:56,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10459cd70/8f62cb4af7e74313b71bd3b7e5e9d59b [2023-12-20 23:52:56,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 23:52:56,752 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 23:52:56,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 23:52:56,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 23:52:56,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 23:52:56,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:52:56" (1/1) ... [2023-12-20 23:52:56,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d4b576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:56, skipping insertion in model container [2023-12-20 23:52:56,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:52:56" (1/1) ... [2023-12-20 23:52:56,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 23:52:56,895 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-48.i[916,929] [2023-12-20 23:52:56,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:52:57,013 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 23:52:57,020 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-48.i[916,929] [2023-12-20 23:52:57,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:52:57,107 INFO L206 MainTranslator]: Completed translation [2023-12-20 23:52:57,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57 WrapperNode [2023-12-20 23:52:57,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 23:52:57,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 23:52:57,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 23:52:57,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 23:52:57,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,208 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 375 [2023-12-20 23:52:57,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 23:52:57,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 23:52:57,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 23:52:57,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 23:52:57,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,268 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 23:52:57,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 23:52:57,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 23:52:57,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 23:52:57,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 23:52:57,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (1/1) ... [2023-12-20 23:52:57,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:52:57,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:52:57,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 23:52:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 23:52:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 23:52:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 23:52:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 23:52:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 23:52:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 23:52:57,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 23:52:57,468 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 23:52:57,471 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 23:52:58,021 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 23:52:58,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 23:52:58,066 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 23:52:58,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:52:58 BoogieIcfgContainer [2023-12-20 23:52:58,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 23:52:58,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 23:52:58,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 23:52:58,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 23:52:58,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:52:56" (1/3) ... [2023-12-20 23:52:58,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2193c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:52:58, skipping insertion in model container [2023-12-20 23:52:58,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:52:57" (2/3) ... [2023-12-20 23:52:58,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2193c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:52:58, skipping insertion in model container [2023-12-20 23:52:58,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:52:58" (3/3) ... [2023-12-20 23:52:58,072 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-48.i [2023-12-20 23:52:58,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 23:52:58,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 23:52:58,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 23:52:58,132 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;@79b91ca0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 23:52:58,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 23:52:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 97 states have internal predecessors, (145), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-20 23:52:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-20 23:52:58,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:52:58,162 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:52:58,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:52:58,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:52:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 109164640, now seen corresponding path program 1 times [2023-12-20 23:52:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:52:58,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465415494] [2023-12-20 23:52:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:52:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:52:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:52:58,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:52:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465415494] [2023-12-20 23:52:58,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 23:52:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838784349] [2023-12-20 23:52:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:52:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:52:58,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:52:58,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:52:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 23:52:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:52:58,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 23:52:58,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:52:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2023-12-20 23:52:58,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:52:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838784349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:52:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:52:58,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 23:52:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624901044] [2023-12-20 23:52:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:52:58,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 23:52:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:52:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 23:52:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:52:58,691 INFO L87 Difference]: Start difference. First operand has 140 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 97 states have internal predecessors, (145), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-20 23:52:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:52:58,753 INFO L93 Difference]: Finished difference Result 277 states and 493 transitions. [2023-12-20 23:52:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 23:52:58,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 272 [2023-12-20 23:52:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:52:58,762 INFO L225 Difference]: With dead ends: 277 [2023-12-20 23:52:58,762 INFO L226 Difference]: Without dead ends: 138 [2023-12-20 23:52:58,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:52:58,771 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:52:58,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:52:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-20 23:52:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-12-20 23:52:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 95 states have internal predecessors, (140), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-20 23:52:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 222 transitions. [2023-12-20 23:52:58,815 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 222 transitions. Word has length 272 [2023-12-20 23:52:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:52:58,816 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 222 transitions. [2023-12-20 23:52:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-20 23:52:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 222 transitions. [2023-12-20 23:52:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-20 23:52:58,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:52:58,819 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:52:58,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 23:52:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 23:52:59,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:52:59,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:52:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1364092054, now seen corresponding path program 1 times [2023-12-20 23:52:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:52:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282163470] [2023-12-20 23:52:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:52:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:52:59,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:52:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141586740] [2023-12-20 23:52:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:52:59,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:52:59,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:52:59,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:52:59,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 23:52:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:52:59,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 23:52:59,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:52:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-20 23:52:59,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:52:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:52:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282163470] [2023-12-20 23:52:59,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:52:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141586740] [2023-12-20 23:52:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141586740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:52:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:52:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 23:52:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065179308] [2023-12-20 23:52:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:52:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 23:52:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:52:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 23:52:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 23:52:59,679 INFO L87 Difference]: Start difference. First operand 138 states and 222 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, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-20 23:53:00,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:53:00,098 INFO L93 Difference]: Finished difference Result 445 states and 712 transitions. [2023-12-20 23:53:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 23:53:00,101 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, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 272 [2023-12-20 23:53:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:53:00,107 INFO L225 Difference]: With dead ends: 445 [2023-12-20 23:53:00,107 INFO L226 Difference]: Without dead ends: 308 [2023-12-20 23:53:00,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-20 23:53:00,111 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 162 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 23:53:00,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 719 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 23:53:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-20 23:53:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2023-12-20 23:53:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 213 states have (on average 1.4460093896713615) internal successors, (308), 214 states have internal predecessors, (308), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-20 23:53:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 478 transitions. [2023-12-20 23:53:00,156 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 478 transitions. Word has length 272 [2023-12-20 23:53:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:53:00,157 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 478 transitions. [2023-12-20 23:53:00,157 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, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-20 23:53:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 478 transitions. [2023-12-20 23:53:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-20 23:53:00,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:53:00,160 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:53:00,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 23:53:00,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 23:53:00,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:53:00,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:53:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1021474680, now seen corresponding path program 1 times [2023-12-20 23:53:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:53:00,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695383712] [2023-12-20 23:53:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:53:00,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:53:00,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:53:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137722870] [2023-12-20 23:53:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:53:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:53:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:53:00,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:53:00,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 23:53:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:53:00,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 23:53:00,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:53:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1624 proven. 48 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked. [2023-12-20 23:53:00,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:53:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 72 proven. 48 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2023-12-20 23:53:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:53:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695383712] [2023-12-20 23:53:00,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:53:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137722870] [2023-12-20 23:53:00,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137722870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 23:53:00,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 23:53:00,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-20 23:53:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227724020] [2023-12-20 23:53:00,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 23:53:00,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 23:53:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:53:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 23:53:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-20 23:53:00,950 INFO L87 Difference]: Start difference. First operand 302 states and 478 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-20 23:53:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:53:01,261 INFO L93 Difference]: Finished difference Result 612 states and 959 transitions. [2023-12-20 23:53:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 23:53:01,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 272 [2023-12-20 23:53:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:53:01,267 INFO L225 Difference]: With dead ends: 612 [2023-12-20 23:53:01,267 INFO L226 Difference]: Without dead ends: 311 [2023-12-20 23:53:01,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-20 23:53:01,270 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 216 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 23:53:01,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 743 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 23:53:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-20 23:53:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2023-12-20 23:53:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 216 states have (on average 1.412037037037037) internal successors, (305), 217 states have internal predecessors, (305), 85 states have call successors, (85), 5 states have call predecessors, (85), 5 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-20 23:53:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 475 transitions. [2023-12-20 23:53:01,300 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 475 transitions. Word has length 272 [2023-12-20 23:53:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:53:01,303 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 475 transitions. [2023-12-20 23:53:01,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-20 23:53:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 475 transitions. [2023-12-20 23:53:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-20 23:53:01,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:53:01,306 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:53:01,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 23:53:01,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:53:01,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:53:01,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:53:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1538627704, now seen corresponding path program 1 times [2023-12-20 23:53:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:53:01,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427234761] [2023-12-20 23:53:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:53:01,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:53:01,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:53:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918958767] [2023-12-20 23:53:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:53:01,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:53:01,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:53:01,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:53:01,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 23:53:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:53:01,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 23:53:01,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-21 00:06:57,978 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 00:06:57,978 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 [2023-12-21 00:06:58,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 00:06:58,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown