/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-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:58:22,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:58:22,316 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:58:22,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:58:22,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:58:22,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:58:22,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:58:22,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:58:22,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:58:22,345 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:58:22,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:58:22,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:58:22,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:58:22,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:58:22,347 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:58:22,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:58:22,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:58:22,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:58:22,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:58:22,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:58:22,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:58:22,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:58:22,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:58:22,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:58:22,349 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:58:22,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:58:22,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:58:22,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:58:22,350 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:58:22,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:58:22,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:58:22,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:58:22,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:58:22,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:58:22,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:58:22,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:58:22,352 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:58:22,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:58:22,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:58:22,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:58:22,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:58:22,559 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:58:22,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-25.i [2023-12-16 03:58:23,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:58:23,783 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:58:23,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-25.i [2023-12-16 03:58:23,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ff54e54/f504af422ae34383964903f784692c1d/FLAG34abb3dd5 [2023-12-16 03:58:23,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ff54e54/f504af422ae34383964903f784692c1d [2023-12-16 03:58:23,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:58:23,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:58:23,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:58:23,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:58:23,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:58:23,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:58:23" (1/1) ... [2023-12-16 03:58:23,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba04e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:23, skipping insertion in model container [2023-12-16 03:58:23,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:58:23" (1/1) ... [2023-12-16 03:58:23,864 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:58:23,976 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-25.i[916,929] [2023-12-16 03:58:24,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:58:24,102 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:58:24,110 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-25.i[916,929] [2023-12-16 03:58:24,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:58:24,186 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:58:24,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24 WrapperNode [2023-12-16 03:58:24,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:58:24,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:58:24,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:58:24,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:58:24,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,264 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 387 [2023-12-16 03:58:24,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:58:24,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:58:24,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:58:24,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:58:24,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,343 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 03:58:24,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:58:24,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:58:24,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:58:24,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:58:24,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:58:24,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:24,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 03:58:24,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 03:58:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:58:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:58:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:58:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:58:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:58:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:58:24,571 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:58:24,573 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:58:25,115 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:58:25,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:58:25,176 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:58:25,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:58:25 BoogieIcfgContainer [2023-12-16 03:58:25,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:58:25,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:58:25,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:58:25,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:58:25,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:58:23" (1/3) ... [2023-12-16 03:58:25,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246d856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:58:25, skipping insertion in model container [2023-12-16 03:58:25,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (2/3) ... [2023-12-16 03:58:25,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246d856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:58:25, skipping insertion in model container [2023-12-16 03:58:25,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:58:25" (3/3) ... [2023-12-16 03:58:25,182 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-25.i [2023-12-16 03:58:25,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:58:25,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:58:25,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:58:25,237 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;@4222f5b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:58:25,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:58:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 95 states have internal predecessors, (140), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 03:58:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 03:58:25,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:25,261 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:25,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:25,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:25,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2004616131, now seen corresponding path program 1 times [2023-12-16 03:58:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304407972] [2023-12-16 03:58:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:25,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304407972] [2023-12-16 03:58:25,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:58:25,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646670722] [2023-12-16 03:58:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:25,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:25,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:25,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:25,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:58:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:25,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:58:25,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2023-12-16 03:58:25,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646670722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:25,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:25,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:58:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743932466] [2023-12-16 03:58:25,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:25,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:58:25,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:58:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:58:25,987 INFO L87 Difference]: Start difference. First operand has 151 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 95 states have internal predecessors, (140), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-16 03:58:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:26,041 INFO L93 Difference]: Finished difference Result 299 states and 548 transitions. [2023-12-16 03:58:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:58:26,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) Word has length 340 [2023-12-16 03:58:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:26,051 INFO L225 Difference]: With dead ends: 299 [2023-12-16 03:58:26,051 INFO L226 Difference]: Without dead ends: 149 [2023-12-16 03:58:26,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:58:26,056 INFO L413 NwaCegarLoop]: 240 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, 240 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:26,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:58:26,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-16 03:58:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-12-16 03:58:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 93 states have internal predecessors, (135), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 03:58:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 243 transitions. [2023-12-16 03:58:26,121 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 243 transitions. Word has length 340 [2023-12-16 03:58:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:26,122 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 243 transitions. [2023-12-16 03:58:26,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-16 03:58:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 243 transitions. [2023-12-16 03:58:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 03:58:26,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:26,131 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:26,151 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 03:58:26,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 03:58:26,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:26,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 4299147, now seen corresponding path program 1 times [2023-12-16 03:58:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500603796] [2023-12-16 03:58:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:26,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972333830] [2023-12-16 03:58:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:26,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:26,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:26,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:58:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:26,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:58:26,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2023-12-16 03:58:27,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500603796] [2023-12-16 03:58:27,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972333830] [2023-12-16 03:58:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972333830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:27,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:58:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041537141] [2023-12-16 03:58:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:58:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:58:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:58:27,146 INFO L87 Difference]: Start difference. First operand 149 states and 243 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-12-16 03:58:27,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:27,477 INFO L93 Difference]: Finished difference Result 489 states and 796 transitions. [2023-12-16 03:58:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 03:58:27,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 340 [2023-12-16 03:58:27,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:27,482 INFO L225 Difference]: With dead ends: 489 [2023-12-16 03:58:27,482 INFO L226 Difference]: Without dead ends: 341 [2023-12-16 03:58:27,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:58:27,484 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 271 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:27,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 848 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:58:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-12-16 03:58:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 307. [2023-12-16 03:58:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 196 states have (on average 1.469387755102041) internal successors, (288), 196 states have internal predecessors, (288), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-16 03:58:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 504 transitions. [2023-12-16 03:58:27,569 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 504 transitions. Word has length 340 [2023-12-16 03:58:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:27,569 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 504 transitions. [2023-12-16 03:58:27,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-12-16 03:58:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 504 transitions. [2023-12-16 03:58:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 03:58:27,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:27,572 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:27,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 03:58:27,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 03:58:27,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:27,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:27,780 INFO L85 PathProgramCache]: Analyzing trace with hash 843422409, now seen corresponding path program 1 times [2023-12-16 03:58:27,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:27,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619189711] [2023-12-16 03:58:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:27,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:27,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137254435] [2023-12-16 03:58:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:27,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:27,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:58:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:28,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:58:28,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2023-12-16 03:58:28,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:28,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619189711] [2023-12-16 03:58:28,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137254435] [2023-12-16 03:58:28,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137254435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:28,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:28,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:58:28,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570708860] [2023-12-16 03:58:28,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:28,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:58:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:58:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:28,068 INFO L87 Difference]: Start difference. First operand 307 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-12-16 03:58:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:28,149 INFO L93 Difference]: Finished difference Result 871 states and 1421 transitions. [2023-12-16 03:58:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:58:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 340 [2023-12-16 03:58:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:28,153 INFO L225 Difference]: With dead ends: 871 [2023-12-16 03:58:28,153 INFO L226 Difference]: Without dead ends: 565 [2023-12-16 03:58:28,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:28,155 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 224 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:28,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 599 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:58:28,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-16 03:58:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 341. [2023-12-16 03:58:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 230 states have (on average 1.4260869565217391) internal successors, (328), 230 states have internal predecessors, (328), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-16 03:58:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 544 transitions. [2023-12-16 03:58:28,182 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 544 transitions. Word has length 340 [2023-12-16 03:58:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:28,182 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 544 transitions. [2023-12-16 03:58:28,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-12-16 03:58:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 544 transitions. [2023-12-16 03:58:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 03:58:28,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:28,184 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:28,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:28,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:28,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:28,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -20676469, now seen corresponding path program 1 times [2023-12-16 03:58:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:28,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844736407] [2023-12-16 03:58:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:28,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:28,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857332006] [2023-12-16 03:58:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:28,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:28,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:28,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:28,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:58:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:28,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:58:28,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2783 proven. 96 refuted. 0 times theorem prover too weak. 2845 trivial. 0 not checked. [2023-12-16 03:58:28,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:58:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 63 proven. 96 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-12-16 03:58:29,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:29,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844736407] [2023-12-16 03:58:29,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:29,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857332006] [2023-12-16 03:58:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857332006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:58:29,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:58:29,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 03:58:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787543171] [2023-12-16 03:58:29,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:58:29,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:58:29,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:58:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:58:29,089 INFO L87 Difference]: Start difference. First operand 341 states and 544 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2023-12-16 03:58:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:29,378 INFO L93 Difference]: Finished difference Result 688 states and 1090 transitions. [2023-12-16 03:58:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:58:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 340 [2023-12-16 03:58:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:29,380 INFO L225 Difference]: With dead ends: 688 [2023-12-16 03:58:29,381 INFO L226 Difference]: Without dead ends: 348 [2023-12-16 03:58:29,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:58:29,382 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 174 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:29,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 397 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 03:58:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-16 03:58:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2023-12-16 03:58:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 231 states have (on average 1.393939393939394) internal successors, (322), 231 states have internal predecessors, (322), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-16 03:58:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 538 transitions. [2023-12-16 03:58:29,403 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 538 transitions. Word has length 340 [2023-12-16 03:58:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:29,404 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 538 transitions. [2023-12-16 03:58:29,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2023-12-16 03:58:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 538 transitions. [2023-12-16 03:58:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 03:58:29,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:29,406 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:29,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:29,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:29,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:29,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:29,613 INFO L85 PathProgramCache]: Analyzing trace with hash 814433745, now seen corresponding path program 1 times [2023-12-16 03:58:29,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:29,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336462722] [2023-12-16 03:58:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:29,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:29,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121843819] [2023-12-16 03:58:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:29,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:29,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:29,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:29,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:58:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:29,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:58:29,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 53 proven. 159 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-16 03:58:30,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:58:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-12-16 03:58:30,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336462722] [2023-12-16 03:58:30,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121843819] [2023-12-16 03:58:30,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121843819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:58:30,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:58:30,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 03:58:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882920810] [2023-12-16 03:58:30,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:58:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 03:58:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 03:58:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 03:58:30,586 INFO L87 Difference]: Start difference. First operand 344 states and 538 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 3 states have call successors, (108) [2023-12-16 03:58:30,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:30,942 INFO L93 Difference]: Finished difference Result 700 states and 1086 transitions. [2023-12-16 03:58:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 03:58:30,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 3 states have call successors, (108) Word has length 340 [2023-12-16 03:58:30,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:30,945 INFO L225 Difference]: With dead ends: 700 [2023-12-16 03:58:30,945 INFO L226 Difference]: Without dead ends: 357 [2023-12-16 03:58:30,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 03:58:30,946 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 295 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:30,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 424 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:58:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-16 03:58:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 352. [2023-12-16 03:58:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 237 states have (on average 1.3670886075949367) internal successors, (324), 237 states have internal predecessors, (324), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-16 03:58:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 540 transitions. [2023-12-16 03:58:30,976 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 540 transitions. Word has length 340 [2023-12-16 03:58:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:30,976 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 540 transitions. [2023-12-16 03:58:30,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 3 states have call successors, (108) [2023-12-16 03:58:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 540 transitions. [2023-12-16 03:58:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 03:58:30,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:30,979 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:31,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:31,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:31,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:31,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2094330157, now seen corresponding path program 1 times [2023-12-16 03:58:31,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:31,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201267646] [2023-12-16 03:58:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:31,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:31,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079096610] [2023-12-16 03:58:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:31,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:31,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:31,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:58:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:31,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 03:58:31,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2023-12-16 03:58:31,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:31,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:31,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201267646] [2023-12-16 03:58:31,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:31,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079096610] [2023-12-16 03:58:31,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079096610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:31,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:31,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:58:31,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309759433] [2023-12-16 03:58:31,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:31,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:58:31,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:31,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:58:31,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:58:31,741 INFO L87 Difference]: Start difference. First operand 352 states and 540 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-12-16 03:58:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:31,981 INFO L93 Difference]: Finished difference Result 902 states and 1382 transitions. [2023-12-16 03:58:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:58:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 340 [2023-12-16 03:58:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:31,986 INFO L225 Difference]: With dead ends: 902 [2023-12-16 03:58:31,986 INFO L226 Difference]: Without dead ends: 551 [2023-12-16 03:58:31,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:58:31,987 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 134 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:31,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 648 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 03:58:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-16 03:58:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 466. [2023-12-16 03:58:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 294 states have (on average 1.3129251700680271) internal successors, (386), 294 states have internal predecessors, (386), 162 states have call successors, (162), 9 states have call predecessors, (162), 9 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-16 03:58:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 710 transitions. [2023-12-16 03:58:32,024 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 710 transitions. Word has length 340 [2023-12-16 03:58:32,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:32,025 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 710 transitions. [2023-12-16 03:58:32,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-12-16 03:58:32,025 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 710 transitions. [2023-12-16 03:58:32,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-16 03:58:32,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:32,026 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:32,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:32,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:32,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:32,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -896890656, now seen corresponding path program 1 times [2023-12-16 03:58:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114115734] [2023-12-16 03:58:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:32,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:32,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:32,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184797584] [2023-12-16 03:58:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:32,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:32,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:32,313 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:58:32,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:58:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:32,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 03:58:32,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2783 proven. 96 refuted. 0 times theorem prover too weak. 2845 trivial. 0 not checked. [2023-12-16 03:58:33,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:58:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 63 proven. 96 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-12-16 03:58:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114115734] [2023-12-16 03:58:40,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184797584] [2023-12-16 03:58:40,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184797584] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:58:40,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:58:40,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-16 03:58:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136676187] [2023-12-16 03:58:40,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:58:40,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 03:58:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 03:58:40,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 03:58:40,803 INFO L87 Difference]: Start difference. First operand 466 states and 710 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2023-12-16 03:58:44,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result VALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:58:46,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result VALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:58:50,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:58:54,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:07,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:12,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:13,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:16,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:21,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:24,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:28,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:32,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:36,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 03:59:38,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 03:59:39,586 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:59:39,610 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:59:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 03:59:39,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 03:59:39,650 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 948 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 539 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:59:39,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 1260 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 1402 Invalid, 6 Unknown, 0 Unchecked, 48.4s Time] [2023-12-16 03:59:39,651 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 03:59:39,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:59:39,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:59:39,860 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (466states) and FLOYD_HOARE automaton (currently 29 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-6-3-1 context. [2023-12-16 03:59:39,863 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:59:39,865 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 03:59:39,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:59:39 BoogieIcfgContainer [2023-12-16 03:59:39,866 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 03:59:39,867 INFO L158 Benchmark]: Toolchain (without parser) took 76043.06ms. Allocated memory was 197.1MB in the beginning and 531.6MB in the end (delta: 334.5MB). Free memory was 145.0MB in the beginning and 235.8MB in the end (delta: -90.8MB). Peak memory consumption was 244.5MB. Max. memory is 8.0GB. [2023-12-16 03:59:39,867 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 03:59:39,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.99ms. Allocated memory is still 197.1MB. Free memory was 144.7MB in the beginning and 119.1MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 03:59:39,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.99ms. Allocated memory is still 197.1MB. Free memory was 119.1MB in the beginning and 108.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 03:59:39,877 INFO L158 Benchmark]: Boogie Preprocessor took 129.20ms. Allocated memory was 197.1MB in the beginning and 298.8MB in the end (delta: 101.7MB). Free memory was 108.0MB in the beginning and 231.5MB in the end (delta: -123.6MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2023-12-16 03:59:39,877 INFO L158 Benchmark]: RCFGBuilder took 781.80ms. Allocated memory is still 298.8MB. Free memory was 231.5MB in the beginning and 164.9MB in the end (delta: 66.6MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2023-12-16 03:59:39,877 INFO L158 Benchmark]: TraceAbstraction took 74687.97ms. Allocated memory was 298.8MB in the beginning and 531.6MB in the end (delta: 232.8MB). Free memory was 164.4MB in the beginning and 235.8MB in the end (delta: -71.4MB). Peak memory consumption was 161.4MB. Max. memory is 8.0GB. [2023-12-16 03:59:39,879 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 361.99ms. Allocated memory is still 197.1MB. Free memory was 144.7MB in the beginning and 119.1MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.99ms. Allocated memory is still 197.1MB. Free memory was 119.1MB in the beginning and 108.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 129.20ms. Allocated memory was 197.1MB in the beginning and 298.8MB in the end (delta: 101.7MB). Free memory was 108.0MB in the beginning and 231.5MB in the end (delta: -123.6MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * RCFGBuilder took 781.80ms. Allocated memory is still 298.8MB. Free memory was 231.5MB in the beginning and 164.9MB in the end (delta: 66.6MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * TraceAbstraction took 74687.97ms. Allocated memory was 298.8MB in the beginning and 531.6MB in the end (delta: 232.8MB). Free memory was 164.4MB in the beginning and 235.8MB in the end (delta: -71.4MB). Peak memory consumption was 161.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (466states) and FLOYD_HOARE automaton (currently 29 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-6-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.6s, OverallIterations: 7, TraceHistogramMax: 54, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 60.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 2069 SdHoareTripleChecker+Valid, 49.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2046 mSDsluCounter, 4416 SdHoareTripleChecker+Invalid, 49.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2703 mSDsCounter, 832 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2365 IncrementalHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 832 mSolverCounterUnsat, 1713 mSDtfsCounter, 2365 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3438 GetRequests, 3366 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=6, InterpolantAutomatonStates: 33, 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, 6 MinimizatonAttempts, 352 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 2721 NumberOfCodeBlocks, 2721 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3392 ConstructedInterpolants, 0 QuantifiedInterpolants, 14910 SizeOfPredicates, 27 NumberOfNonLiveVariables, 5746 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 56538/57240 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