/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-48.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:19:54,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:19:54,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:19:54,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:19:54,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:19:54,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:19:54,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:19:54,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:19:54,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:19:54,860 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:19:54,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:19:54,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:19:54,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:19:54,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:19:54,861 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:19:54,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:19:54,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:19:54,862 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:19:54,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:19:54,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:19:54,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:19:54,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:19:54,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:19:54,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:19:54,869 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:19:54,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:19:54,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:19:54,870 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:19:54,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:19:54,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:19:54,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:19:54,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:19:54,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:19:54,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:19:54,873 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:19:54,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:19:54,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:19:54,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:19:55,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:19:55,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:19:55,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:19:55,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:19:55,086 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:19:55,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-48.i [2023-12-15 21:19:56,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:19:56,274 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:19:56,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-48.i [2023-12-15 21:19:56,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb3875b7/82b54adf9c3948b4839c2aa52eb8107b/FLAGe096a8be8 [2023-12-15 21:19:56,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb3875b7/82b54adf9c3948b4839c2aa52eb8107b [2023-12-15 21:19:56,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:19:56,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:19:56,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:19:56,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:19:56,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:19:56,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61abc8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56, skipping insertion in model container [2023-12-15 21:19:56,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:19:56,496 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_amount500_file-48.i[916,929] [2023-12-15 21:19:56,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:19:56,690 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:19:56,704 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_amount500_file-48.i[916,929] [2023-12-15 21:19:56,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:19:56,791 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:19:56,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56 WrapperNode [2023-12-15 21:19:56,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:19:56,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:19:56,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:19:56,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:19:56,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,883 INFO L138 Inliner]: procedures = 26, calls = 96, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 770 [2023-12-15 21:19:56,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:19:56,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:19:56,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:19:56,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:19:56,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,998 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]. [2023-12-15 21:19:56,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:56,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:57,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:57,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:57,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:57,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:57,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:19:57,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:19:57,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:19:57,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:19:57,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (1/1) ... [2023-12-15 21:19:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:19:57,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:57,137 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) [2023-12-15 21:19:57,224 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 [2023-12-15 21:19:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:19:57,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:19:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:19:57,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:19:57,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:19:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:19:57,349 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:19:57,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:19:58,137 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:19:58,184 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:19:58,184 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:19:58,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:19:58 BoogieIcfgContainer [2023-12-15 21:19:58,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:19:58,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:19:58,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:19:58,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:19:58,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:19:56" (1/3) ... [2023-12-15 21:19:58,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4ea985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:19:58, skipping insertion in model container [2023-12-15 21:19:58,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:19:56" (2/3) ... [2023-12-15 21:19:58,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4ea985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:19:58, skipping insertion in model container [2023-12-15 21:19:58,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:19:58" (3/3) ... [2023-12-15 21:19:58,191 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-48.i [2023-12-15 21:19:58,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:19:58,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:19:58,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:19:58,253 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;@c4d2330, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:19:58,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:19:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 205 states have (on average 1.5804878048780489) internal successors, (324), 206 states have internal predecessors, (324), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-15 21:19:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-15 21:19:58,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:58,284 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:19:58,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:58,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash -222708008, now seen corresponding path program 1 times [2023-12-15 21:19:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820999079] [2023-12-15 21:19:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:58,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820999079] [2023-12-15 21:19:58,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:19:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511558590] [2023-12-15 21:19:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:58,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:58,652 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) [2023-12-15 21:19:58,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:19:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:59,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:19:59,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2023-12-15 21:19:59,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:59,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511558590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:59,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:59,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:19:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591216008] [2023-12-15 21:19:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:19:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:19:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:19:59,158 INFO L87 Difference]: Start difference. First operand has 291 states, 205 states have (on average 1.5804878048780489) internal successors, (324), 206 states have internal predecessors, (324), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-15 21:19:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:59,239 INFO L93 Difference]: Finished difference Result 579 states and 1061 transitions. [2023-12-15 21:19:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:19:59,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 2 states have call successors, (83) Word has length 540 [2023-12-15 21:19:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:59,251 INFO L225 Difference]: With dead ends: 579 [2023-12-15 21:19:59,251 INFO L226 Difference]: Without dead ends: 289 [2023-12-15 21:19:59,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:19:59,261 INFO L413 NwaCegarLoop]: 481 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, 481 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 [2023-12-15 21:19:59,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:19:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-15 21:19:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-15 21:19:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 204 states have (on average 1.5588235294117647) internal successors, (318), 204 states have internal predecessors, (318), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-15 21:19:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 484 transitions. [2023-12-15 21:19:59,328 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 484 transitions. Word has length 540 [2023-12-15 21:19:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:59,328 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 484 transitions. [2023-12-15 21:19:59,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-15 21:19:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 484 transitions. [2023-12-15 21:19:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-15 21:19:59,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:59,338 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:19:59,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:59,538 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 [2023-12-15 21:19:59,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:59,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1979107330, now seen corresponding path program 1 times [2023-12-15 21:19:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:59,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563310393] [2023-12-15 21:19:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:59,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:59,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:59,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973117749] [2023-12-15 21:19:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:59,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:59,688 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) [2023-12-15 21:19:59,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:20:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:00,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:00,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:00,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:00,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563310393] [2023-12-15 21:20:00,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973117749] [2023-12-15 21:20:00,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973117749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:00,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:00,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747501020] [2023-12-15 21:20:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:00,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:00,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:00,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:00,522 INFO L87 Difference]: Start difference. First operand 289 states and 484 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:00,625 INFO L93 Difference]: Finished difference Result 577 states and 967 transitions. [2023-12-15 21:20:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:00,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 540 [2023-12-15 21:20:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:00,649 INFO L225 Difference]: With dead ends: 577 [2023-12-15 21:20:00,649 INFO L226 Difference]: Without dead ends: 289 [2023-12-15 21:20:00,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:00,651 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:00,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 441 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:20:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-15 21:20:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-15 21:20:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 204 states have internal predecessors, (316), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-15 21:20:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 482 transitions. [2023-12-15 21:20:00,669 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 482 transitions. Word has length 540 [2023-12-15 21:20:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:00,670 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 482 transitions. [2023-12-15 21:20:00,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 482 transitions. [2023-12-15 21:20:00,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-15 21:20:00,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:00,674 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:00,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:20:00,881 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 [2023-12-15 21:20:00,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:00,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash -441011742, now seen corresponding path program 1 times [2023-12-15 21:20:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876788721] [2023-12-15 21:20:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:00,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118110671] [2023-12-15 21:20:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:00,955 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) [2023-12-15 21:20:00,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:20:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:01,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:20:01,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:01,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:01,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:01,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876788721] [2023-12-15 21:20:01,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:01,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118110671] [2023-12-15 21:20:01,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118110671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:01,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:01,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:20:01,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778702796] [2023-12-15 21:20:01,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:01,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:20:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:01,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:20:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:20:01,820 INFO L87 Difference]: Start difference. First operand 289 states and 482 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:02,165 INFO L93 Difference]: Finished difference Result 866 states and 1445 transitions. [2023-12-15 21:20:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:20:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 541 [2023-12-15 21:20:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:02,169 INFO L225 Difference]: With dead ends: 866 [2023-12-15 21:20:02,169 INFO L226 Difference]: Without dead ends: 578 [2023-12-15 21:20:02,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:20:02,171 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 315 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:02,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1738 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:20:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-15 21:20:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 423. [2023-12-15 21:20:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 254 states have (on average 1.4409448818897639) internal successors, (366), 254 states have internal predecessors, (366), 166 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-15 21:20:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 698 transitions. [2023-12-15 21:20:02,223 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 698 transitions. Word has length 541 [2023-12-15 21:20:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:02,224 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 698 transitions. [2023-12-15 21:20:02,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 698 transitions. [2023-12-15 21:20:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-15 21:20:02,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:02,228 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:02,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:02,435 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 [2023-12-15 21:20:02,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:02,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash -200771996, now seen corresponding path program 1 times [2023-12-15 21:20:02,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:02,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599352734] [2023-12-15 21:20:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:02,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:02,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792275260] [2023-12-15 21:20:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:02,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:02,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:02,489 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) [2023-12-15 21:20:02,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:20:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:02,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:20:02,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:03,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599352734] [2023-12-15 21:20:03,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:03,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792275260] [2023-12-15 21:20:03,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792275260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:03,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:20:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003006830] [2023-12-15 21:20:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:20:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:20:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:20:03,331 INFO L87 Difference]: Start difference. First operand 423 states and 698 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:03,802 INFO L93 Difference]: Finished difference Result 712 states and 1181 transitions. [2023-12-15 21:20:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:20:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 541 [2023-12-15 21:20:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:03,812 INFO L225 Difference]: With dead ends: 712 [2023-12-15 21:20:03,812 INFO L226 Difference]: Without dead ends: 424 [2023-12-15 21:20:03,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:20:03,815 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 602 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:03,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 703 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:20:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-15 21:20:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2023-12-15 21:20:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 255 states have (on average 1.4392156862745098) internal successors, (367), 255 states have internal predecessors, (367), 166 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-15 21:20:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 699 transitions. [2023-12-15 21:20:03,867 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 699 transitions. Word has length 541 [2023-12-15 21:20:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:03,869 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 699 transitions. [2023-12-15 21:20:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 699 transitions. [2023-12-15 21:20:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-15 21:20:03,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:03,874 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:03,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:04,082 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 [2023-12-15 21:20:04,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:04,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 954542222, now seen corresponding path program 1 times [2023-12-15 21:20:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081268307] [2023-12-15 21:20:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:04,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27841425] [2023-12-15 21:20:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:04,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:04,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:04,143 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) [2023-12-15 21:20:04,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:20:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:04,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:04,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:04,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081268307] [2023-12-15 21:20:04,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27841425] [2023-12-15 21:20:04,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27841425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:04,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:04,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:04,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671176364] [2023-12-15 21:20:04,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:04,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:04,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:04,496 INFO L87 Difference]: Start difference. First operand 424 states and 699 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:04,578 INFO L93 Difference]: Finished difference Result 992 states and 1643 transitions. [2023-12-15 21:20:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:04,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 542 [2023-12-15 21:20:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:04,582 INFO L225 Difference]: With dead ends: 992 [2023-12-15 21:20:04,582 INFO L226 Difference]: Without dead ends: 703 [2023-12-15 21:20:04,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:04,583 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 440 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:04,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1276 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-12-15 21:20:04,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 478. [2023-12-15 21:20:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 309 states have (on average 1.4789644012944985) internal successors, (457), 309 states have internal predecessors, (457), 166 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-15 21:20:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 789 transitions. [2023-12-15 21:20:04,642 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 789 transitions. Word has length 542 [2023-12-15 21:20:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:04,643 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 789 transitions. [2023-12-15 21:20:04,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:04,644 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 789 transitions. [2023-12-15 21:20:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-15 21:20:04,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:04,647 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:04,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:04,855 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 [2023-12-15 21:20:04,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:04,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1961017537, now seen corresponding path program 1 times [2023-12-15 21:20:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540526983] [2023-12-15 21:20:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:04,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396594941] [2023-12-15 21:20:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:04,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:04,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:04,921 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) [2023-12-15 21:20:04,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:20:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:05,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:05,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:05,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:05,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540526983] [2023-12-15 21:20:05,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396594941] [2023-12-15 21:20:05,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396594941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:05,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:05,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:05,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110691990] [2023-12-15 21:20:05,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:05,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:05,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:05,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:05,268 INFO L87 Difference]: Start difference. First operand 478 states and 789 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:05,332 INFO L93 Difference]: Finished difference Result 1087 states and 1805 transitions. [2023-12-15 21:20:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:05,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 543 [2023-12-15 21:20:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:05,336 INFO L225 Difference]: With dead ends: 1087 [2023-12-15 21:20:05,337 INFO L226 Difference]: Without dead ends: 744 [2023-12-15 21:20:05,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:05,338 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 320 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:05,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1196 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-15 21:20:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 741. [2023-12-15 21:20:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 530 states have (on average 1.5377358490566038) internal successors, (815), 531 states have internal predecessors, (815), 207 states have call successors, (207), 3 states have call predecessors, (207), 3 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 21:20:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1229 transitions. [2023-12-15 21:20:05,386 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1229 transitions. Word has length 543 [2023-12-15 21:20:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:05,387 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1229 transitions. [2023-12-15 21:20:05,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1229 transitions. [2023-12-15 21:20:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-15 21:20:05,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:05,390 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:05,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:05,597 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 [2023-12-15 21:20:05,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:05,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 422907201, now seen corresponding path program 1 times [2023-12-15 21:20:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729140766] [2023-12-15 21:20:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:05,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:05,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396050155] [2023-12-15 21:20:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:05,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:05,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:05,652 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) [2023-12-15 21:20:05,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:20:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:05,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:05,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:06,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729140766] [2023-12-15 21:20:06,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396050155] [2023-12-15 21:20:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396050155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:06,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411552768] [2023-12-15 21:20:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:06,008 INFO L87 Difference]: Start difference. First operand 741 states and 1229 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:06,112 INFO L93 Difference]: Finished difference Result 1776 states and 2943 transitions. [2023-12-15 21:20:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 543 [2023-12-15 21:20:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:06,120 INFO L225 Difference]: With dead ends: 1776 [2023-12-15 21:20:06,122 INFO L226 Difference]: Without dead ends: 1170 [2023-12-15 21:20:06,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:06,124 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 396 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:06,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1208 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:20:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-12-15 21:20:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 907. [2023-12-15 21:20:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 696 states have (on average 1.5617816091954022) internal successors, (1087), 697 states have internal predecessors, (1087), 207 states have call successors, (207), 3 states have call predecessors, (207), 3 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 21:20:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1501 transitions. [2023-12-15 21:20:06,179 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1501 transitions. Word has length 543 [2023-12-15 21:20:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:06,180 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1501 transitions. [2023-12-15 21:20:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1501 transitions. [2023-12-15 21:20:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-15 21:20:06,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:06,183 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:06,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:06,390 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 [2023-12-15 21:20:06,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:06,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1191919911, now seen corresponding path program 1 times [2023-12-15 21:20:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079588585] [2023-12-15 21:20:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:06,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:06,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:06,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518553446] [2023-12-15 21:20:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:06,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:06,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:06,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:20:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:06,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:20:06,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6132 proven. 81 refuted. 0 times theorem prover too weak. 7399 trivial. 0 not checked. [2023-12-15 21:20:07,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 165 proven. 81 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-15 21:20:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079588585] [2023-12-15 21:20:07,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518553446] [2023-12-15 21:20:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518553446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:07,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:07,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:20:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544957741] [2023-12-15 21:20:07,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:20:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:20:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:20:07,358 INFO L87 Difference]: Start difference. First operand 907 states and 1501 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2023-12-15 21:20:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:08,005 INFO L93 Difference]: Finished difference Result 1673 states and 2759 transitions. [2023-12-15 21:20:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:20:08,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 544 [2023-12-15 21:20:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:08,010 INFO L225 Difference]: With dead ends: 1673 [2023-12-15 21:20:08,010 INFO L226 Difference]: Without dead ends: 901 [2023-12-15 21:20:08,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1080 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:20:08,014 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 292 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:08,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1166 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:20:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-12-15 21:20:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 895. [2023-12-15 21:20:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 682 states have (on average 1.5205278592375366) internal successors, (1037), 683 states have internal predecessors, (1037), 207 states have call successors, (207), 5 states have call predecessors, (207), 5 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 21:20:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1451 transitions. [2023-12-15 21:20:08,062 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1451 transitions. Word has length 544 [2023-12-15 21:20:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:08,062 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1451 transitions. [2023-12-15 21:20:08,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2023-12-15 21:20:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1451 transitions. [2023-12-15 21:20:08,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-15 21:20:08,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:08,066 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:08,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:20:08,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:08,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1846222494, now seen corresponding path program 1 times [2023-12-15 21:20:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783634958] [2023-12-15 21:20:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:08,319 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811560426] [2023-12-15 21:20:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:08,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:08,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:08,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:08,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:20:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:08,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:20:08,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 8947 proven. 99 refuted. 0 times theorem prover too weak. 4566 trivial. 0 not checked. [2023-12-15 21:20:09,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 147 proven. 99 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-15 21:20:09,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783634958] [2023-12-15 21:20:09,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811560426] [2023-12-15 21:20:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811560426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:09,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 21:20:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589635765] [2023-12-15 21:20:09,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:09,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:20:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:20:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:20:09,624 INFO L87 Difference]: Start difference. First operand 895 states and 1451 transitions. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 5 states have call successors, (147), 3 states have call predecessors, (147), 5 states have return successors, (147), 5 states have call predecessors, (147), 5 states have call successors, (147) [2023-12-15 21:20:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:10,268 INFO L93 Difference]: Finished difference Result 1665 states and 2694 transitions. [2023-12-15 21:20:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:20:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 5 states have call successors, (147), 3 states have call predecessors, (147), 5 states have return successors, (147), 5 states have call predecessors, (147), 5 states have call successors, (147) Word has length 545 [2023-12-15 21:20:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:10,272 INFO L225 Difference]: With dead ends: 1665 [2023-12-15 21:20:10,272 INFO L226 Difference]: Without dead ends: 909 [2023-12-15 21:20:10,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:20:10,274 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1406 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:10,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1163 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:20:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-12-15 21:20:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 903. [2023-12-15 21:20:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 688 states have (on average 1.510174418604651) internal successors, (1039), 689 states have internal predecessors, (1039), 207 states have call successors, (207), 7 states have call predecessors, (207), 7 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 21:20:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1453 transitions. [2023-12-15 21:20:10,316 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1453 transitions. Word has length 545 [2023-12-15 21:20:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:10,316 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1453 transitions. [2023-12-15 21:20:10,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 5 states have call successors, (147), 3 states have call predecessors, (147), 5 states have return successors, (147), 5 states have call predecessors, (147), 5 states have call successors, (147) [2023-12-15 21:20:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1453 transitions. [2023-12-15 21:20:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 21:20:10,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:10,320 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:10,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:10,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:10,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1899201802, now seen corresponding path program 1 times [2023-12-15 21:20:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501597340] [2023-12-15 21:20:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:10,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:10,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020098273] [2023-12-15 21:20:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:10,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:10,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:10,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:10,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:20:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:10,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:20:10,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6858 proven. 114 refuted. 0 times theorem prover too weak. 6640 trivial. 0 not checked. [2023-12-15 21:20:11,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 132 proven. 114 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-15 21:20:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501597340] [2023-12-15 21:20:11,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020098273] [2023-12-15 21:20:11,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020098273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:11,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:11,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:20:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43032435] [2023-12-15 21:20:11,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:20:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:20:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:20:11,395 INFO L87 Difference]: Start difference. First operand 903 states and 1453 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-15 21:20:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:11,726 INFO L93 Difference]: Finished difference Result 1681 states and 2699 transitions. [2023-12-15 21:20:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:20:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 546 [2023-12-15 21:20:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:11,731 INFO L225 Difference]: With dead ends: 1681 [2023-12-15 21:20:11,731 INFO L226 Difference]: Without dead ends: 921 [2023-12-15 21:20:11,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1084 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:20:11,733 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 297 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:11,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 935 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:20:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-12-15 21:20:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 911. [2023-12-15 21:20:11,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 694 states have (on average 1.494236311239193) internal successors, (1037), 695 states have internal predecessors, (1037), 207 states have call successors, (207), 9 states have call predecessors, (207), 9 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 21:20:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1451 transitions. [2023-12-15 21:20:11,780 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1451 transitions. Word has length 546 [2023-12-15 21:20:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:11,780 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1451 transitions. [2023-12-15 21:20:11,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-15 21:20:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1451 transitions. [2023-12-15 21:20:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 21:20:11,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:11,784 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:11,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:20:11,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:11,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 213021964, now seen corresponding path program 1 times [2023-12-15 21:20:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664026615] [2023-12-15 21:20:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:12,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:12,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839385327] [2023-12-15 21:20:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:12,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:12,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:12,066 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:12,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:20:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:12,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:20:12,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6616 proven. 147 refuted. 0 times theorem prover too weak. 6849 trivial. 0 not checked. [2023-12-15 21:20:13,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664026615] [2023-12-15 21:20:13,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839385327] [2023-12-15 21:20:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839385327] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:20:13,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:20:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-12-15 21:20:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849746642] [2023-12-15 21:20:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:13,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:20:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:20:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:20:13,707 INFO L87 Difference]: Start difference. First operand 911 states and 1451 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-15 21:20:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:14,803 INFO L93 Difference]: Finished difference Result 4859 states and 7762 transitions. [2023-12-15 21:20:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 21:20:14,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 546 [2023-12-15 21:20:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:14,817 INFO L225 Difference]: With dead ends: 4859 [2023-12-15 21:20:14,817 INFO L226 Difference]: Without dead ends: 4095 [2023-12-15 21:20:14,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2023-12-15 21:20:14,821 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 2397 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 4229 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:14,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 4229 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:20:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2023-12-15 21:20:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3187. [2023-12-15 21:20:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 2579 states have (on average 1.5199689802248935) internal successors, (3920), 2585 states have internal predecessors, (3920), 579 states have call successors, (579), 28 states have call predecessors, (579), 28 states have return successors, (579), 573 states have call predecessors, (579), 579 states have call successors, (579) [2023-12-15 21:20:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 5078 transitions. [2023-12-15 21:20:15,029 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 5078 transitions. Word has length 546 [2023-12-15 21:20:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 3187 states and 5078 transitions. [2023-12-15 21:20:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-15 21:20:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 5078 transitions. [2023-12-15 21:20:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 21:20:15,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:15,035 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:15,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:15,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:20:15,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:15,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1560437409, now seen corresponding path program 1 times [2023-12-15 21:20:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:15,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360574622] [2023-12-15 21:20:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:15,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:15,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:15,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033249336] [2023-12-15 21:20:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:15,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:15,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:15,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:20:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:15,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:20:15,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6264 proven. 0 refuted. 0 times theorem prover too weak. 7348 trivial. 0 not checked. [2023-12-15 21:20:16,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360574622] [2023-12-15 21:20:16,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033249336] [2023-12-15 21:20:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033249336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:16,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:16,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:20:16,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511202718] [2023-12-15 21:20:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:16,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:20:16,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:20:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:20:16,542 INFO L87 Difference]: Start difference. First operand 3187 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-15 21:20:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:16,921 INFO L93 Difference]: Finished difference Result 6227 states and 9930 transitions. [2023-12-15 21:20:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:16,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 546 [2023-12-15 21:20:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:16,933 INFO L225 Difference]: With dead ends: 6227 [2023-12-15 21:20:16,933 INFO L226 Difference]: Without dead ends: 3187 [2023-12-15 21:20:16,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:20:16,943 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 680 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:16,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 397 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:20:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2023-12-15 21:20:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3187. [2023-12-15 21:20:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 2579 states have (on average 1.5106630476929042) internal successors, (3896), 2585 states have internal predecessors, (3896), 579 states have call successors, (579), 28 states have call predecessors, (579), 28 states have return successors, (579), 573 states have call predecessors, (579), 579 states have call successors, (579) [2023-12-15 21:20:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 5054 transitions. [2023-12-15 21:20:17,149 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 5054 transitions. Word has length 546 [2023-12-15 21:20:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:17,150 INFO L495 AbstractCegarLoop]: Abstraction has 3187 states and 5054 transitions. [2023-12-15 21:20:17,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-15 21:20:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 5054 transitions. [2023-12-15 21:20:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 21:20:17,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:17,155 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:17,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:17,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:20:17,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:17,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -858837535, now seen corresponding path program 1 times [2023-12-15 21:20:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685847807] [2023-12-15 21:20:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:17,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540385698] [2023-12-15 21:20:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:17,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:17,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:17,404 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:17,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:20:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:17,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:20:17,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6937 proven. 303 refuted. 0 times theorem prover too weak. 6372 trivial. 0 not checked. [2023-12-15 21:20:18,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 183 proven. 306 refuted. 0 times theorem prover too weak. 13123 trivial. 0 not checked. [2023-12-15 21:20:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685847807] [2023-12-15 21:20:19,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540385698] [2023-12-15 21:20:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540385698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:19,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2023-12-15 21:20:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904743890] [2023-12-15 21:20:19,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:19,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 21:20:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:19,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 21:20:19,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:20:19,690 INFO L87 Difference]: Start difference. First operand 3187 states and 5054 transitions. Second operand has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 6 states have call successors, (166), 4 states have call predecessors, (166), 8 states have return successors, (166), 6 states have call predecessors, (166), 6 states have call successors, (166) [2023-12-15 21:20:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:23,349 INFO L93 Difference]: Finished difference Result 7447 states and 11811 transitions. [2023-12-15 21:20:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-15 21:20:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 6 states have call successors, (166), 4 states have call predecessors, (166), 8 states have return successors, (166), 6 states have call predecessors, (166), 6 states have call successors, (166) Word has length 546 [2023-12-15 21:20:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:23,362 INFO L225 Difference]: With dead ends: 7447 [2023-12-15 21:20:23,362 INFO L226 Difference]: Without dead ends: 4407 [2023-12-15 21:20:23,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1079 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1044, Invalid=2738, Unknown=0, NotChecked=0, Total=3782 [2023-12-15 21:20:23,367 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 3830 mSDsluCounter, 5574 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 1338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 5673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1338 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:23,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3864 Valid, 6356 Invalid, 5673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1338 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 21:20:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2023-12-15 21:20:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 2023. [2023-12-15 21:20:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1670 states have (on average 1.5251497005988024) internal successors, (2547), 1672 states have internal predecessors, (2547), 331 states have call successors, (331), 21 states have call predecessors, (331), 21 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) [2023-12-15 21:20:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 3209 transitions. [2023-12-15 21:20:23,538 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 3209 transitions. Word has length 546 [2023-12-15 21:20:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:23,538 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 3209 transitions. [2023-12-15 21:20:23,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 6 states have call successors, (166), 4 states have call predecessors, (166), 8 states have return successors, (166), 6 states have call predecessors, (166), 6 states have call successors, (166) [2023-12-15 21:20:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 3209 transitions. [2023-12-15 21:20:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 21:20:23,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:23,543 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:23,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:23,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:20:23,751 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:23,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 240087566, now seen corresponding path program 1 times [2023-12-15 21:20:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:23,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93173956] [2023-12-15 21:20:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:23,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:23,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191234335] [2023-12-15 21:20:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:23,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:23,794 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:23,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:20:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:24,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:20:24,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6868 proven. 129 refuted. 0 times theorem prover too weak. 6615 trivial. 0 not checked. [2023-12-15 21:20:24,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 117 proven. 129 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-15 21:20:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93173956] [2023-12-15 21:20:24,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191234335] [2023-12-15 21:20:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191234335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:24,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:24,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:20:24,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343004852] [2023-12-15 21:20:24,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:24,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:20:24,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:24,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:20:24,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:20:24,720 INFO L87 Difference]: Start difference. First operand 2023 states and 3209 transitions. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 3 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) [2023-12-15 21:20:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:25,142 INFO L93 Difference]: Finished difference Result 3905 states and 6180 transitions. [2023-12-15 21:20:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:20:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 3 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) Word has length 546 [2023-12-15 21:20:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:25,154 INFO L225 Difference]: With dead ends: 3905 [2023-12-15 21:20:25,154 INFO L226 Difference]: Without dead ends: 2041 [2023-12-15 21:20:25,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:20:25,157 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 494 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:25,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 920 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:20:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2023-12-15 21:20:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2027. [2023-12-15 21:20:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1669 states have (on average 1.506291192330737) internal successors, (2514), 1671 states have internal predecessors, (2514), 331 states have call successors, (331), 26 states have call predecessors, (331), 26 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) [2023-12-15 21:20:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3176 transitions. [2023-12-15 21:20:25,271 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3176 transitions. Word has length 546 [2023-12-15 21:20:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:25,272 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 3176 transitions. [2023-12-15 21:20:25,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 3 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) [2023-12-15 21:20:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3176 transitions. [2023-12-15 21:20:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 21:20:25,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:25,277 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:25,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:25,484 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:25,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2084002544, now seen corresponding path program 1 times [2023-12-15 21:20:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591085598] [2023-12-15 21:20:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:25,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696484684] [2023-12-15 21:20:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:25,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:25,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:25,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:25,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:20:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:25,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:20:25,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-15 21:20:26,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:26,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:26,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591085598] [2023-12-15 21:20:26,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:26,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696484684] [2023-12-15 21:20:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696484684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:26,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973400511] [2023-12-15 21:20:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:26,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:20:26,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:20:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:20:26,434 INFO L87 Difference]: Start difference. First operand 2027 states and 3176 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:26,682 INFO L93 Difference]: Finished difference Result 5755 states and 9052 transitions. [2023-12-15 21:20:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:20:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 546 [2023-12-15 21:20:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:26,694 INFO L225 Difference]: With dead ends: 5755 [2023-12-15 21:20:26,694 INFO L226 Difference]: Without dead ends: 3891 [2023-12-15 21:20:26,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:20:26,697 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 188 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:26,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1304 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:20:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2023-12-15 21:20:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3857. [2023-12-15 21:20:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3233 states have (on average 1.5078874110733065) internal successors, (4875), 3237 states have internal predecessors, (4875), 579 states have call successors, (579), 44 states have call predecessors, (579), 44 states have return successors, (579), 575 states have call predecessors, (579), 579 states have call successors, (579) [2023-12-15 21:20:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 6033 transitions. [2023-12-15 21:20:26,951 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 6033 transitions. Word has length 546 [2023-12-15 21:20:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:26,952 INFO L495 AbstractCegarLoop]: Abstraction has 3857 states and 6033 transitions. [2023-12-15 21:20:26,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-15 21:20:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 6033 transitions. [2023-12-15 21:20:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-15 21:20:26,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:26,959 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:26,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:20:27,167 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:27,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1526028955, now seen corresponding path program 1 times [2023-12-15 21:20:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546385968] [2023-12-15 21:20:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:27,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998093336] [2023-12-15 21:20:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:27,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:27,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:27,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:27,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:20:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:27,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:20:27,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6816 proven. 135 refuted. 0 times theorem prover too weak. 6661 trivial. 0 not checked. [2023-12-15 21:20:28,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 111 proven. 135 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-15 21:20:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546385968] [2023-12-15 21:20:28,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998093336] [2023-12-15 21:20:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998093336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:20:28,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:20:28,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-15 21:20:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666130958] [2023-12-15 21:20:28,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:28,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:20:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:20:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:20:28,784 INFO L87 Difference]: Start difference. First operand 3857 states and 6033 transitions. Second operand has 12 states, 12 states have (on average 19.416666666666668) internal successors, (233), 12 states have internal predecessors, (233), 4 states have call successors, (166), 3 states have call predecessors, (166), 5 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) [2023-12-15 21:20:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:30,488 INFO L93 Difference]: Finished difference Result 17913 states and 28247 transitions. [2023-12-15 21:20:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:20:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.416666666666668) internal successors, (233), 12 states have internal predecessors, (233), 4 states have call successors, (166), 3 states have call predecessors, (166), 5 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) Word has length 547 [2023-12-15 21:20:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:30,518 INFO L225 Difference]: With dead ends: 17913 [2023-12-15 21:20:30,519 INFO L226 Difference]: Without dead ends: 14219 [2023-12-15 21:20:30,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:20:30,525 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 860 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:30,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 3425 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:20:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14219 states. [2023-12-15 21:20:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14219 to 7585. [2023-12-15 21:20:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 6420 states have (on average 1.5065420560747664) internal successors, (9672), 6428 states have internal predecessors, (9672), 1075 states have call successors, (1075), 89 states have call predecessors, (1075), 89 states have return successors, (1075), 1067 states have call predecessors, (1075), 1075 states have call successors, (1075) [2023-12-15 21:20:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 11822 transitions. [2023-12-15 21:20:31,183 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 11822 transitions. Word has length 547 [2023-12-15 21:20:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:31,183 INFO L495 AbstractCegarLoop]: Abstraction has 7585 states and 11822 transitions. [2023-12-15 21:20:31,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.416666666666668) internal successors, (233), 12 states have internal predecessors, (233), 4 states have call successors, (166), 3 states have call predecessors, (166), 5 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) [2023-12-15 21:20:31,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 11822 transitions. [2023-12-15 21:20:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-15 21:20:31,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:31,189 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:31,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-15 21:20:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:20:31,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:31,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1032855653, now seen corresponding path program 1 times [2023-12-15 21:20:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681312151] [2023-12-15 21:20:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:31,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:31,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:31,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999158022] [2023-12-15 21:20:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:31,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:31,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:31,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:31,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:20:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:32,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 21:20:32,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 5406 proven. 417 refuted. 0 times theorem prover too weak. 7789 trivial. 0 not checked. [2023-12-15 21:20:34,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:20:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681312151] [2023-12-15 21:20:42,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999158022] [2023-12-15 21:20:42,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999158022] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:20:42,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:20:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-15 21:20:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066756363] [2023-12-15 21:20:42,605 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:20:42,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:20:42,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:20:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=166, Unknown=2, NotChecked=0, Total=210 [2023-12-15 21:20:42,607 INFO L87 Difference]: Start difference. First operand 7585 states and 11822 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 11 states have internal predecessors, (148), 3 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) [2023-12-15 21:20:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:45,905 INFO L93 Difference]: Finished difference Result 17685 states and 27567 transitions. [2023-12-15 21:20:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-15 21:20:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 11 states have internal predecessors, (148), 3 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) Word has length 548 [2023-12-15 21:20:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:45,924 INFO L225 Difference]: With dead ends: 17685 [2023-12-15 21:20:45,924 INFO L226 Difference]: Without dead ends: 10267 [2023-12-15 21:20:45,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=274, Invalid=1056, Unknown=2, NotChecked=0, Total=1332 [2023-12-15 21:20:45,936 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 960 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:45,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 2970 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 21:20:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2023-12-15 21:20:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 10001. [2023-12-15 21:20:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10001 states, 8634 states have (on average 1.512856150104239) internal successors, (13062), 8650 states have internal predecessors, (13062), 1243 states have call successors, (1243), 123 states have call predecessors, (1243), 123 states have return successors, (1243), 1227 states have call predecessors, (1243), 1243 states have call successors, (1243) [2023-12-15 21:20:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10001 states to 10001 states and 15548 transitions. [2023-12-15 21:20:46,629 INFO L78 Accepts]: Start accepts. Automaton has 10001 states and 15548 transitions. Word has length 548 [2023-12-15 21:20:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:46,630 INFO L495 AbstractCegarLoop]: Abstraction has 10001 states and 15548 transitions. [2023-12-15 21:20:46,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 11 states have internal predecessors, (148), 3 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) [2023-12-15 21:20:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 10001 states and 15548 transitions. [2023-12-15 21:20:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-15 21:20:46,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:46,639 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:46,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:20:46,849 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:46,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1539529486, now seen corresponding path program 1 times [2023-12-15 21:20:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:46,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769133583] [2023-12-15 21:20:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:46,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:46,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830635531] [2023-12-15 21:20:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:46,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:46,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:46,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:20:46,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:20:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:48,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-15 21:20:48,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 2294 proven. 447 refuted. 0 times theorem prover too weak. 10871 trivial. 0 not checked. [2023-12-15 21:20:51,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:20:57,316 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 [2023-12-15 21:20:57,317 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:20:57,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:20:57,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:57,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:20:57,550 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 549 with TraceHistMax 83,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-2-3-2-2-1 context. [2023-12-15 21:20:57,553 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:20:57,555 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:20:57,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:20:57 BoogieIcfgContainer [2023-12-15 21:20:57,556 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:20:57,556 INFO L158 Benchmark]: Toolchain (without parser) took 61246.08ms. Allocated memory was 235.9MB in the beginning and 1.0GB in the end (delta: 805.3MB). Free memory was 187.0MB in the beginning and 564.0MB in the end (delta: -376.9MB). Peak memory consumption was 429.9MB. Max. memory is 8.0GB. [2023-12-15 21:20:57,557 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory was 142.0MB in the beginning and 141.8MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:20:57,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.49ms. Allocated memory is still 235.9MB. Free memory was 187.0MB in the beginning and 150.3MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-15 21:20:57,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.52ms. Allocated memory is still 235.9MB. Free memory was 150.3MB in the beginning and 134.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:20:57,557 INFO L158 Benchmark]: Boogie Preprocessor took 194.89ms. Allocated memory was 235.9MB in the beginning and 320.9MB in the end (delta: 84.9MB). Free memory was 134.6MB in the beginning and 256.2MB in the end (delta: -121.6MB). Peak memory consumption was 28.7MB. Max. memory is 8.0GB. [2023-12-15 21:20:57,557 INFO L158 Benchmark]: RCFGBuilder took 1105.03ms. Allocated memory is still 320.9MB. Free memory was 256.2MB in the beginning and 254.0MB in the end (delta: 2.3MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. [2023-12-15 21:20:57,557 INFO L158 Benchmark]: TraceAbstraction took 59369.91ms. Allocated memory was 320.9MB in the beginning and 1.0GB in the end (delta: 720.4MB). Free memory was 253.0MB in the beginning and 564.0MB in the end (delta: -311.0MB). Peak memory consumption was 409.4MB. Max. memory is 8.0GB. [2023-12-15 21:20:57,558 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 196.1MB. Free memory was 142.0MB in the beginning and 141.8MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 478.49ms. Allocated memory is still 235.9MB. Free memory was 187.0MB in the beginning and 150.3MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 91.52ms. Allocated memory is still 235.9MB. Free memory was 150.3MB in the beginning and 134.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 194.89ms. Allocated memory was 235.9MB in the beginning and 320.9MB in the end (delta: 84.9MB). Free memory was 134.6MB in the beginning and 256.2MB in the end (delta: -121.6MB). Peak memory consumption was 28.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1105.03ms. Allocated memory is still 320.9MB. Free memory was 256.2MB in the beginning and 254.0MB in the end (delta: 2.3MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. * TraceAbstraction took 59369.91ms. Allocated memory was 320.9MB in the beginning and 1.0GB in the end (delta: 720.4MB). Free memory was 253.0MB in the beginning and 564.0MB in the end (delta: -311.0MB). Peak memory consumption was 409.4MB. 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 analyzing trace of length 549 with TraceHistMax 83,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 291 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.3s, OverallIterations: 18, TraceHistogramMax: 83, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14037 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13695 mSDsluCounter, 29908 SdHoareTripleChecker+Invalid, 8.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21108 mSDsCounter, 3704 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11843 IncrementalHoareTripleChecker+Invalid, 15547 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3704 mSolverCounterUnsat, 8800 mSDtfsCounter, 11843 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13254 GetRequests, 13050 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10001occurred in iteration=17, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 10908 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 9790 NumberOfCodeBlocks, 9790 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 13046 ConstructedInterpolants, 4 QuantifiedInterpolants, 46789 SizeOfPredicates, 57 NumberOfNonLiveVariables, 22383 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 324399/326688 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