/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-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:00:17,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:00:17,513 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 04:00:17,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:00:17,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:00:17,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:00:17,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:00:17,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:00:17,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:00:17,547 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:00:17,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:00:17,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:00:17,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:00:17,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:00:17,548 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:00:17,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:00:17,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:00:17,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:00:17,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:00:17,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:00:17,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:00:17,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:00:17,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:00:17,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:00:17,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:00:17,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:00:17,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:00:17,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:00:17,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:00:17,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:00:17,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:00:17,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:00:17,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:00:17,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:00:17,791 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:00:17,792 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:00:17,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-56.i [2023-12-16 04:00:18,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:00:19,052 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:00:19,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-56.i [2023-12-16 04:00:19,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9100e1fe6/7d6e038dc7784d4fbaa436a6164b03ea/FLAG78f7185c2 [2023-12-16 04:00:19,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9100e1fe6/7d6e038dc7784d4fbaa436a6164b03ea [2023-12-16 04:00:19,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:00:19,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:00:19,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:00:19,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:00:19,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:00:19,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29384968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19, skipping insertion in model container [2023-12-16 04:00:19,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,136 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:00:19,250 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-56.i[916,929] [2023-12-16 04:00:19,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:00:19,393 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:00:19,402 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-56.i[916,929] [2023-12-16 04:00:19,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:00:19,468 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:00:19,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19 WrapperNode [2023-12-16 04:00:19,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:00:19,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:00:19,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:00:19,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:00:19,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,550 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 378 [2023-12-16 04:00:19,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:00:19,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:00:19,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:00:19,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:00:19,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,617 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 04:00:19,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:00:19,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:00:19,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:00:19,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:00:19,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (1/1) ... [2023-12-16 04:00:19,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:00:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:19,710 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 04:00:19,724 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 04:00:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:00:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:00:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:00:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:00:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:00:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:00:19,818 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:00:19,820 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:00:20,363 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:00:20,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:00:20,396 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:00:20,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:00:20 BoogieIcfgContainer [2023-12-16 04:00:20,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:00:20,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:00:20,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:00:20,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:00:20,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:00:19" (1/3) ... [2023-12-16 04:00:20,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b164cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:00:20, skipping insertion in model container [2023-12-16 04:00:20,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:19" (2/3) ... [2023-12-16 04:00:20,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b164cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:00:20, skipping insertion in model container [2023-12-16 04:00:20,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:00:20" (3/3) ... [2023-12-16 04:00:20,403 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-56.i [2023-12-16 04:00:20,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:00:20,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:00:20,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:00:20,458 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;@3bb7f3e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:00:20,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:00:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 96 states have (on average 1.5) internal successors, (144), 97 states have internal predecessors, (144), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 04:00:20,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:20,484 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:20,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:20,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash 276837783, now seen corresponding path program 1 times [2023-12-16 04:00:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:20,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47554611] [2023-12-16 04:00:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47554611] [2023-12-16 04:00:20,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:00:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537824827] [2023-12-16 04:00:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:20,750 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 04:00:20,756 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 04:00:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:21,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:00:21,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-12-16 04:00:21,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:00:21,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537824827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:00:21,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:00:21,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:00:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879950036] [2023-12-16 04:00:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:21,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:00:21,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:00:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:00:21,103 INFO L87 Difference]: Start difference. First operand has 149 states, 96 states have (on average 1.5) internal successors, (144), 97 states have internal predecessors, (144), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-16 04:00:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:21,148 INFO L93 Difference]: Finished difference Result 292 states and 530 transitions. [2023-12-16 04:00:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:00:21,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 322 [2023-12-16 04:00:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:21,157 INFO L225 Difference]: With dead ends: 292 [2023-12-16 04:00:21,157 INFO L226 Difference]: Without dead ends: 144 [2023-12-16 04:00:21,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 321 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 04:00:21,163 INFO L413 NwaCegarLoop]: 229 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, 229 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 04:00:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:00:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-16 04:00:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-12-16 04:00:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.434782608695652) internal successors, (132), 92 states have internal predecessors, (132), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 232 transitions. [2023-12-16 04:00:21,247 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 232 transitions. Word has length 322 [2023-12-16 04:00:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:21,247 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 232 transitions. [2023-12-16 04:00:21,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-16 04:00:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 232 transitions. [2023-12-16 04:00:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 04:00:21,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:21,253 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:21,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:00:21,462 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 04:00:21,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:21,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1878711677, now seen corresponding path program 1 times [2023-12-16 04:00:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:21,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337730775] [2023-12-16 04:00:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:21,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442539063] [2023-12-16 04:00:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:21,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:21,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:21,522 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 04:00:21,532 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 04:00:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:21,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:00:21,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 04:00:21,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:00:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:21,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337730775] [2023-12-16 04:00:21,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:21,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442539063] [2023-12-16 04:00:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442539063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:00:21,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:00:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:00:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491428667] [2023-12-16 04:00:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:21,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:00:21,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:00:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:00:21,970 INFO L87 Difference]: Start difference. First operand 144 states and 232 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:22,200 INFO L93 Difference]: Finished difference Result 291 states and 468 transitions. [2023-12-16 04:00:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:00:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 322 [2023-12-16 04:00:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:22,206 INFO L225 Difference]: With dead ends: 291 [2023-12-16 04:00:22,206 INFO L226 Difference]: Without dead ends: 148 [2023-12-16 04:00:22,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 319 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 04:00:22,208 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:22,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 676 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:00:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-16 04:00:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-12-16 04:00:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.425531914893617) internal successors, (134), 94 states have internal predecessors, (134), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 234 transitions. [2023-12-16 04:00:22,233 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 234 transitions. Word has length 322 [2023-12-16 04:00:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 234 transitions. [2023-12-16 04:00:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 234 transitions. [2023-12-16 04:00:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 04:00:22,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:22,238 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:22,252 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 04:00:22,450 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 04:00:22,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:22,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1878652095, now seen corresponding path program 1 times [2023-12-16 04:00:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696683309] [2023-12-16 04:00:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:22,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:22,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599252297] [2023-12-16 04:00:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:22,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:22,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:22,530 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 04:00:22,557 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 04:00:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:22,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:00:22,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 04:00:22,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:00:22,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696683309] [2023-12-16 04:00:22,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599252297] [2023-12-16 04:00:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599252297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:00:22,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:00:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:00:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545311619] [2023-12-16 04:00:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:22,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:00:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:00:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:00:22,776 INFO L87 Difference]: Start difference. First operand 146 states and 234 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:22,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:22,882 INFO L93 Difference]: Finished difference Result 430 states and 689 transitions. [2023-12-16 04:00:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:00:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 322 [2023-12-16 04:00:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:22,888 INFO L225 Difference]: With dead ends: 430 [2023-12-16 04:00:22,888 INFO L226 Difference]: Without dead ends: 285 [2023-12-16 04:00:22,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 320 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 04:00:22,894 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 211 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:22,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 597 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:00:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-16 04:00:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 184. [2023-12-16 04:00:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 295 transitions. [2023-12-16 04:00:22,922 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 295 transitions. Word has length 322 [2023-12-16 04:00:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:22,924 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 295 transitions. [2023-12-16 04:00:22,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 295 transitions. [2023-12-16 04:00:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 04:00:22,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:22,929 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:22,938 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 04:00:23,136 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 04:00:23,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:23,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1219120573, now seen corresponding path program 1 times [2023-12-16 04:00:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780207009] [2023-12-16 04:00:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:23,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:23,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619976323] [2023-12-16 04:00:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:23,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:23,218 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 04:00:23,241 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 04:00:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:23,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:00:23,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 04:00:23,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:00:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780207009] [2023-12-16 04:00:23,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619976323] [2023-12-16 04:00:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619976323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:00:23,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:00:23,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:00:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252144771] [2023-12-16 04:00:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:00:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:00:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:00:23,499 INFO L87 Difference]: Start difference. First operand 184 states and 295 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:23,557 INFO L93 Difference]: Finished difference Result 546 states and 875 transitions. [2023-12-16 04:00:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:00:23,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 322 [2023-12-16 04:00:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:23,561 INFO L225 Difference]: With dead ends: 546 [2023-12-16 04:00:23,561 INFO L226 Difference]: Without dead ends: 363 [2023-12-16 04:00:23,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 320 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 04:00:23,565 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 206 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:23,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 432 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:00:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-16 04:00:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 237. [2023-12-16 04:00:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 185 states have (on average 1.5027027027027027) internal successors, (278), 185 states have internal predecessors, (278), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 378 transitions. [2023-12-16 04:00:23,585 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 378 transitions. Word has length 322 [2023-12-16 04:00:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:23,588 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 378 transitions. [2023-12-16 04:00:23,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 378 transitions. [2023-12-16 04:00:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 04:00:23,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:23,591 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:23,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:00:23,798 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 04:00:23,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:23,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash -56406453, now seen corresponding path program 1 times [2023-12-16 04:00:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:23,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049893028] [2023-12-16 04:00:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:23,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:23,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79395785] [2023-12-16 04:00:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:23,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:23,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:23,843 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 04:00:23,846 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 04:00:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:24,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:00:24,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 04:00:24,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:00:24,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:24,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049893028] [2023-12-16 04:00:24,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:24,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79395785] [2023-12-16 04:00:24,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79395785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:00:24,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:00:24,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:00:24,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917721894] [2023-12-16 04:00:24,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:24,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:00:24,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:24,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:00:24,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:00:24,075 INFO L87 Difference]: Start difference. First operand 237 states and 378 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:24,275 INFO L93 Difference]: Finished difference Result 574 states and 910 transitions. [2023-12-16 04:00:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:00:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 323 [2023-12-16 04:00:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:24,279 INFO L225 Difference]: With dead ends: 574 [2023-12-16 04:00:24,279 INFO L226 Difference]: Without dead ends: 338 [2023-12-16 04:00:24,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:00:24,280 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 216 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:24,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 540 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:00:24,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-16 04:00:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 237. [2023-12-16 04:00:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 185 states have (on average 1.4756756756756757) internal successors, (273), 185 states have internal predecessors, (273), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 373 transitions. [2023-12-16 04:00:24,304 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 373 transitions. Word has length 323 [2023-12-16 04:00:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:24,304 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 373 transitions. [2023-12-16 04:00:24,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 373 transitions. [2023-12-16 04:00:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 04:00:24,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:24,309 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:24,320 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 04:00:24,515 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 04:00:24,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:24,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash -450773239, now seen corresponding path program 1 times [2023-12-16 04:00:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760584885] [2023-12-16 04:00:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:24,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:24,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182124639] [2023-12-16 04:00:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:24,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:24,546 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 04:00:24,568 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 04:00:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:24,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:00:24,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 693 proven. 9 refuted. 0 times theorem prover too weak. 4198 trivial. 0 not checked. [2023-12-16 04:00:24,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:00:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 138 proven. 9 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-16 04:00:24,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:24,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760584885] [2023-12-16 04:00:24,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:24,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182124639] [2023-12-16 04:00:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182124639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:00:24,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:00:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:00:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146460188] [2023-12-16 04:00:24,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:00:24,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:00:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:00:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:00:24,957 INFO L87 Difference]: Start difference. First operand 237 states and 373 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-16 04:00:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:25,182 INFO L93 Difference]: Finished difference Result 477 states and 748 transitions. [2023-12-16 04:00:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:00:25,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 323 [2023-12-16 04:00:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:25,184 INFO L225 Difference]: With dead ends: 477 [2023-12-16 04:00:25,184 INFO L226 Difference]: Without dead ends: 241 [2023-12-16 04:00:25,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:00:25,185 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 292 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:25,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 411 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:00:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-16 04:00:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-12-16 04:00:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 188 states have (on average 1.4627659574468086) internal successors, (275), 188 states have internal predecessors, (275), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 375 transitions. [2023-12-16 04:00:25,195 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 375 transitions. Word has length 323 [2023-12-16 04:00:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 375 transitions. [2023-12-16 04:00:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-16 04:00:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 375 transitions. [2023-12-16 04:00:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 04:00:25,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:25,198 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:25,206 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 04:00:25,407 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 04:00:25,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:25,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1394593927, now seen corresponding path program 1 times [2023-12-16 04:00:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:25,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703607227] [2023-12-16 04:00:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:25,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:25,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:25,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816366281] [2023-12-16 04:00:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:25,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:25,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:25,451 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 04:00:25,474 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 04:00:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:25,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:00:25,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 337 proven. 3 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2023-12-16 04:00:25,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:00:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 04:00:25,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703607227] [2023-12-16 04:00:25,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816366281] [2023-12-16 04:00:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816366281] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:00:25,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:00:25,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-16 04:00:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147400816] [2023-12-16 04:00:25,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:25,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:00:25,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:25,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:00:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:00:25,891 INFO L87 Difference]: Start difference. First operand 241 states and 375 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:26,247 INFO L93 Difference]: Finished difference Result 625 states and 961 transitions. [2023-12-16 04:00:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:00:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 323 [2023-12-16 04:00:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:26,254 INFO L225 Difference]: With dead ends: 625 [2023-12-16 04:00:26,254 INFO L226 Difference]: Without dead ends: 385 [2023-12-16 04:00:26,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:00:26,256 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 511 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:26,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1415 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:00:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-16 04:00:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 176. [2023-12-16 04:00:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 263 transitions. [2023-12-16 04:00:26,277 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 263 transitions. Word has length 323 [2023-12-16 04:00:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:26,279 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 263 transitions. [2023-12-16 04:00:26,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 263 transitions. [2023-12-16 04:00:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-16 04:00:26,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:26,281 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:26,300 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 04:00:26,488 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 04:00:26,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:26,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1862104730, now seen corresponding path program 1 times [2023-12-16 04:00:26,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:26,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199064424] [2023-12-16 04:00:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:26,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930560883] [2023-12-16 04:00:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:26,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:26,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:26,521 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 04:00:26,536 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 04:00:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:26,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:00:26,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3302 proven. 177 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2023-12-16 04:00:27,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:00:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 04:00:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199064424] [2023-12-16 04:00:27,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930560883] [2023-12-16 04:00:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930560883] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:00:27,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:00:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-16 04:00:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206324132] [2023-12-16 04:00:27,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:00:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:00:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:00:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:00:27,773 INFO L87 Difference]: Start difference. First operand 176 states and 263 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:32,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 04:00:36,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 04:00:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:36,523 INFO L93 Difference]: Finished difference Result 553 states and 824 transitions. [2023-12-16 04:00:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:00:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 324 [2023-12-16 04:00:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:36,526 INFO L225 Difference]: With dead ends: 553 [2023-12-16 04:00:36,526 INFO L226 Difference]: Without dead ends: 378 [2023-12-16 04:00:36,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:00:36,527 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 258 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:36,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 548 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2023-12-16 04:00:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-16 04:00:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 205. [2023-12-16 04:00:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 152 states have (on average 1.3421052631578947) internal successors, (204), 152 states have internal predecessors, (204), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:00:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 304 transitions. [2023-12-16 04:00:36,551 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 304 transitions. Word has length 324 [2023-12-16 04:00:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:36,552 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 304 transitions. [2023-12-16 04:00:36,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 04:00:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 304 transitions. [2023-12-16 04:00:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-16 04:00:36,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:36,554 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:36,574 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 04:00:36,762 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 04:00:36,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1670396641, now seen corresponding path program 1 times [2023-12-16 04:00:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702060056] [2023-12-16 04:00:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:36,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480999731] [2023-12-16 04:00:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:36,799 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 04:00:36,820 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 04:00:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:37,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:00:37,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1017 proven. 15 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2023-12-16 04:00:37,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:00:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 132 proven. 15 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-16 04:00:37,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702060056] [2023-12-16 04:00:37,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480999731] [2023-12-16 04:00:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480999731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:00:37,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:00:37,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-16 04:00:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752135046] [2023-12-16 04:00:37,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:00:37,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 04:00:37,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 04:00:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:00:37,967 INFO L87 Difference]: Start difference. First operand 205 states and 304 transitions. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-16 04:00:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:00:40,252 INFO L93 Difference]: Finished difference Result 935 states and 1367 transitions. [2023-12-16 04:00:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 04:00:40,253 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) Word has length 325 [2023-12-16 04:00:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:00:40,256 INFO L225 Difference]: With dead ends: 935 [2023-12-16 04:00:40,256 INFO L226 Difference]: Without dead ends: 731 [2023-12-16 04:00:40,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=416, Invalid=1390, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 04:00:40,257 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2047 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:00:40,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 1733 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 04:00:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-16 04:00:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 425. [2023-12-16 04:00:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 265 states have (on average 1.2377358490566037) internal successors, (328), 266 states have internal predecessors, (328), 150 states have call successors, (150), 9 states have call predecessors, (150), 9 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-16 04:00:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 628 transitions. [2023-12-16 04:00:40,310 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 628 transitions. Word has length 325 [2023-12-16 04:00:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:00:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 628 transitions. [2023-12-16 04:00:40,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-16 04:00:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 628 transitions. [2023-12-16 04:00:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-16 04:00:40,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:00:40,312 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:40,319 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 04:00:40,519 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 04:00:40,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:00:40,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:00:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 347729796, now seen corresponding path program 1 times [2023-12-16 04:00:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:00:40,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475077340] [2023-12-16 04:00:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:00:40,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:00:40,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22096465] [2023-12-16 04:00:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:00:40,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:00:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:00:40,550 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 04:00:40,553 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 04:00:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:00:40,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 04:00:40,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:00:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3286 proven. 159 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2023-12-16 04:00:47,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:00:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:00:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475077340] [2023-12-16 04:00:50,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:00:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22096465] [2023-12-16 04:00:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22096465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:00:50,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:00:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-16 04:00:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73175578] [2023-12-16 04:00:50,875 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:00:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:00:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:00:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:00:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=248, Unknown=3, NotChecked=0, Total=306 [2023-12-16 04:00:50,877 INFO L87 Difference]: Start difference. First operand 425 states and 628 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (50), 4 states have call predecessors, (50), 6 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-16 04:00:53,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:00:56,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:00:59,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:01,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:06,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:12,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:14,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:17,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:19,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:22,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:25,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:27,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:30,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-16 04:01:32,541 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 04:01:32,553 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:01:33,561 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 04:01:33,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:01:33,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=79, Invalid=296, Unknown=5, NotChecked=0, Total=380 [2023-12-16 04:01:33,652 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:01:33,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 37.9s Time] [2023-12-16 04:01:33,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:01:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 04:01:33,654 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 04:01:33,657 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:01:33,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:01:33,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:01:33 BoogieIcfgContainer [2023-12-16 04:01:33,675 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:01:33,675 INFO L158 Benchmark]: Toolchain (without parser) took 74598.13ms. Allocated memory was 293.6MB in the beginning and 448.8MB in the end (delta: 155.2MB). Free memory was 240.2MB in the beginning and 281.6MB in the end (delta: -41.4MB). Peak memory consumption was 114.5MB. Max. memory is 8.0GB. [2023-12-16 04:01:33,675 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:01:33,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.60ms. Allocated memory is still 293.6MB. Free memory was 239.9MB in the beginning and 215.5MB in the end (delta: 24.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 04:01:33,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.19ms. Allocated memory is still 293.6MB. Free memory was 215.5MB in the beginning and 207.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-16 04:01:33,676 INFO L158 Benchmark]: Boogie Preprocessor took 120.03ms. Allocated memory is still 293.6MB. Free memory was 207.1MB in the beginning and 240.8MB in the end (delta: -33.6MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2023-12-16 04:01:33,676 INFO L158 Benchmark]: RCFGBuilder took 725.51ms. Allocated memory is still 293.6MB. Free memory was 240.8MB in the beginning and 191.0MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2023-12-16 04:01:33,676 INFO L158 Benchmark]: TraceAbstraction took 73276.19ms. Allocated memory was 293.6MB in the beginning and 448.8MB in the end (delta: 155.2MB). Free memory was 190.4MB in the beginning and 281.6MB in the end (delta: -91.2MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. [2023-12-16 04:01:33,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 390.60ms. Allocated memory is still 293.6MB. Free memory was 239.9MB in the beginning and 215.5MB in the end (delta: 24.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 81.19ms. Allocated memory is still 293.6MB. Free memory was 215.5MB in the beginning and 207.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 120.03ms. Allocated memory is still 293.6MB. Free memory was 207.1MB in the beginning and 240.8MB in the end (delta: -33.6MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * RCFGBuilder took 725.51ms. Allocated memory is still 293.6MB. Free memory was 240.8MB in the beginning and 191.0MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * TraceAbstraction took 73276.19ms. Allocated memory was 293.6MB in the beginning and 448.8MB in the end (delta: 155.2MB). Free memory was 190.4MB in the beginning and 281.6MB in the end (delta: -91.2MB). Peak memory consumption was 64.5MB. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.2s, OverallIterations: 10, TraceHistogramMax: 50, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 55.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 3810 SdHoareTripleChecker+Valid, 49.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3759 mSDsluCounter, 6614 SdHoareTripleChecker+Invalid, 48.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4070 mSDsCounter, 1394 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2980 IncrementalHoareTripleChecker+Invalid, 4390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1394 mSolverCounterUnsat, 2544 mSDtfsCounter, 2980 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4601 GetRequests, 4498 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=425occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1018 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 3553 NumberOfCodeBlocks, 3553 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4512 ConstructedInterpolants, 15 QuantifiedInterpolants, 10536 SizeOfPredicates, 41 NumberOfNonLiveVariables, 7494 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 68213/68600 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