/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-24.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:43:01,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:43:02,049 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:43:02,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:43:02,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:43:02,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:43:02,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:43:02,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:43:02,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:43:02,097 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:43:02,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:43:02,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:43:02,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:43:02,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:43:02,099 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:43:02,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:43:02,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:43:02,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:43:02,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:43:02,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:43:02,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:43:02,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:43:02,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:43:02,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:43:02,101 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:43:02,101 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:43:02,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:43:02,102 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:43:02,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:43:02,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:43:02,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:43:02,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:43:02,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:43:02,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:43:02,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:43:02,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:43:02,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:43:02,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:43:02,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:43:02,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:43:02,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:43:02,352 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:43:02,352 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:43:02,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-24.i [2023-12-19 13:43:03,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:43:03,753 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:43:03,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-24.i [2023-12-19 13:43:03,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc79d1ae/b41d91b774114fc3b7d28130f5eac5ed/FLAGd85aeabb1 [2023-12-19 13:43:03,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc79d1ae/b41d91b774114fc3b7d28130f5eac5ed [2023-12-19 13:43:03,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:43:03,782 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:43:03,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:43:03,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:43:03,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:43:03,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:43:03" (1/1) ... [2023-12-19 13:43:03,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65dabb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:03, skipping insertion in model container [2023-12-19 13:43:03,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:43:03" (1/1) ... [2023-12-19 13:43:03,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:43:03,982 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-24.i[916,929] [2023-12-19 13:43:04,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:43:04,226 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:43:04,235 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-24.i[916,929] [2023-12-19 13:43:04,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:43:04,384 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:43:04,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04 WrapperNode [2023-12-19 13:43:04,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:43:04,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:43:04,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:43:04,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:43:04,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,570 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 914 [2023-12-19 13:43:04,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:43:04,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:43:04,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:43:04,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:43:04,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,660 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]. [2023-12-19 13:43:04,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:43:04,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:43:04,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:43:04,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:43:04,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (1/1) ... [2023-12-19 13:43:04,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:43:04,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:04,773 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) [2023-12-19 13:43:04,777 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 [2023-12-19 13:43:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:43:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:43:04,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:43:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:43:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:43:04,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:43:04,927 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:43:04,928 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:43:06,035 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:43:06,105 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:43:06,105 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:43:06,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:43:06 BoogieIcfgContainer [2023-12-19 13:43:06,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:43:06,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:43:06,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:43:06,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:43:06,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:43:03" (1/3) ... [2023-12-19 13:43:06,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f2c7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:43:06, skipping insertion in model container [2023-12-19 13:43:06,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:04" (2/3) ... [2023-12-19 13:43:06,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f2c7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:43:06, skipping insertion in model container [2023-12-19 13:43:06,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:43:06" (3/3) ... [2023-12-19 13:43:06,113 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-24.i [2023-12-19 13:43:06,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:43:06,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:43:06,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:43:06,195 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;@4f0a0fd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:43:06,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:43:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 257 states have (on average 1.595330739299611) internal successors, (410), 258 states have internal predecessors, (410), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-19 13:43:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:06,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:06,250 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:06,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:06,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1071845789, now seen corresponding path program 1 times [2023-12-19 13:43:06,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:06,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897422188] [2023-12-19 13:43:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:06,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:06,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897422188] [2023-12-19 13:43:06,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:43:06,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092107550] [2023-12-19 13:43:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:06,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:06,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:06,678 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) [2023-12-19 13:43:06,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:43:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:07,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:43:07,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2023-12-19 13:43:07,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092107550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:07,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:07,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:43:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736249979] [2023-12-19 13:43:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:07,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:43:07,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:43:07,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:43:07,240 INFO L87 Difference]: Start difference. First operand has 340 states, 257 states have (on average 1.595330739299611) internal successors, (410), 258 states have internal predecessors, (410), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-19 13:43:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:07,372 INFO L93 Difference]: Finished difference Result 677 states and 1218 transitions. [2023-12-19 13:43:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:43:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 541 [2023-12-19 13:43:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:07,384 INFO L225 Difference]: With dead ends: 677 [2023-12-19 13:43:07,385 INFO L226 Difference]: Without dead ends: 338 [2023-12-19 13:43:07,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:43:07,394 INFO L413 NwaCegarLoop]: 562 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, 562 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 [2023-12-19 13:43:07,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 562 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:43:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-19 13:43:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-12-19 13:43:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 256 states have (on average 1.58203125) internal successors, (405), 256 states have internal predecessors, (405), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-19 13:43:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 565 transitions. [2023-12-19 13:43:07,490 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 565 transitions. Word has length 541 [2023-12-19 13:43:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:07,492 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 565 transitions. [2023-12-19 13:43:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-19 13:43:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 565 transitions. [2023-12-19 13:43:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:07,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:07,504 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:07,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:07,712 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 [2023-12-19 13:43:07,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:07,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1726275989, now seen corresponding path program 1 times [2023-12-19 13:43:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983460441] [2023-12-19 13:43:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:07,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:07,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:07,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938834386] [2023-12-19 13:43:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:07,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:07,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:07,904 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) [2023-12-19 13:43:07,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:43:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:08,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:43:08,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:08,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:08,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983460441] [2023-12-19 13:43:08,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938834386] [2023-12-19 13:43:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938834386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:43:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512141175] [2023-12-19 13:43:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:43:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:43:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:08,365 INFO L87 Difference]: Start difference. First operand 338 states and 565 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:08,494 INFO L93 Difference]: Finished difference Result 1000 states and 1672 transitions. [2023-12-19 13:43:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:43:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:08,506 INFO L225 Difference]: With dead ends: 1000 [2023-12-19 13:43:08,506 INFO L226 Difference]: Without dead ends: 663 [2023-12-19 13:43:08,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:08,510 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 530 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1096 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:43:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-12-19 13:43:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 506. [2023-12-19 13:43:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 424 states have (on average 1.6367924528301887) internal successors, (694), 424 states have internal predecessors, (694), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-19 13:43:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 854 transitions. [2023-12-19 13:43:08,549 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 854 transitions. Word has length 541 [2023-12-19 13:43:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:08,551 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 854 transitions. [2023-12-19 13:43:08,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 854 transitions. [2023-12-19 13:43:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:08,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:08,561 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:08,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:08,769 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 [2023-12-19 13:43:08,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:08,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -668437911, now seen corresponding path program 1 times [2023-12-19 13:43:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854151754] [2023-12-19 13:43:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:08,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:08,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:08,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045253733] [2023-12-19 13:43:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:08,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:08,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:08,854 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) [2023-12-19 13:43:08,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:43:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:09,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:43:09,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:09,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854151754] [2023-12-19 13:43:09,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045253733] [2023-12-19 13:43:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045253733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:09,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:43:09,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024077489] [2023-12-19 13:43:09,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:43:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:43:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:09,319 INFO L87 Difference]: Start difference. First operand 506 states and 854 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:09,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:09,402 INFO L93 Difference]: Finished difference Result 1503 states and 2534 transitions. [2023-12-19 13:43:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:43:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:09,408 INFO L225 Difference]: With dead ends: 1503 [2023-12-19 13:43:09,408 INFO L226 Difference]: Without dead ends: 998 [2023-12-19 13:43:09,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:09,410 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 528 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:09,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1582 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:43:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-12-19 13:43:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 996. [2023-12-19 13:43:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 833 states have (on average 1.6194477791116446) internal successors, (1349), 833 states have internal predecessors, (1349), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-19 13:43:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1669 transitions. [2023-12-19 13:43:09,470 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1669 transitions. Word has length 541 [2023-12-19 13:43:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:09,471 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1669 transitions. [2023-12-19 13:43:09,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1669 transitions. [2023-12-19 13:43:09,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:09,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:09,477 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:09,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:09,685 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 [2023-12-19 13:43:09,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:09,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1667954599, now seen corresponding path program 1 times [2023-12-19 13:43:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:09,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348307870] [2023-12-19 13:43:09,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:09,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:09,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248329021] [2023-12-19 13:43:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:09,775 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) [2023-12-19 13:43:09,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:43:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:10,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:43:10,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:10,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:10,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348307870] [2023-12-19 13:43:10,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248329021] [2023-12-19 13:43:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248329021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:10,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:43:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112749102] [2023-12-19 13:43:10,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:10,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:43:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:43:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:10,193 INFO L87 Difference]: Start difference. First operand 996 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:10,321 INFO L93 Difference]: Finished difference Result 2667 states and 4448 transitions. [2023-12-19 13:43:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:43:10,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:10,330 INFO L225 Difference]: With dead ends: 2667 [2023-12-19 13:43:10,330 INFO L226 Difference]: Without dead ends: 1672 [2023-12-19 13:43:10,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:10,335 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 388 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:10,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1311 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:43:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2023-12-19 13:43:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1306. [2023-12-19 13:43:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1143 states have (on average 1.6351706036745406) internal successors, (1869), 1143 states have internal predecessors, (1869), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-19 13:43:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2189 transitions. [2023-12-19 13:43:10,414 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2189 transitions. Word has length 541 [2023-12-19 13:43:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:10,414 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 2189 transitions. [2023-12-19 13:43:10,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2189 transitions. [2023-12-19 13:43:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:10,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:10,420 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:10,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:10,629 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 [2023-12-19 13:43:10,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:10,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1245252773, now seen corresponding path program 1 times [2023-12-19 13:43:10,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:10,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581532125] [2023-12-19 13:43:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:10,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:10,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:10,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662973950] [2023-12-19 13:43:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:10,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:10,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:10,695 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) [2023-12-19 13:43:10,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:43:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:11,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:43:11,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5893 proven. 84 refuted. 0 times theorem prover too weak. 6663 trivial. 0 not checked. [2023-12-19 13:43:11,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 153 proven. 84 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-19 13:43:11,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:11,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581532125] [2023-12-19 13:43:11,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:11,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662973950] [2023-12-19 13:43:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662973950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:11,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:11,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:43:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695087546] [2023-12-19 13:43:11,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:43:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:43:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:43:11,641 INFO L87 Difference]: Start difference. First operand 1306 states and 2189 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-19 13:43:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:12,049 INFO L93 Difference]: Finished difference Result 2627 states and 4391 transitions. [2023-12-19 13:43:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:43:12,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 541 [2023-12-19 13:43:12,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:12,056 INFO L225 Difference]: With dead ends: 2627 [2023-12-19 13:43:12,056 INFO L226 Difference]: Without dead ends: 1322 [2023-12-19 13:43:12,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1074 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:43:12,059 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 415 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:12,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1248 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:43:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2023-12-19 13:43:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1314. [2023-12-19 13:43:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1149 states have (on average 1.6214099216710183) internal successors, (1863), 1149 states have internal predecessors, (1863), 160 states have call successors, (160), 4 states have call predecessors, (160), 4 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-19 13:43:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 2183 transitions. [2023-12-19 13:43:12,121 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 2183 transitions. Word has length 541 [2023-12-19 13:43:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:12,122 INFO L495 AbstractCegarLoop]: Abstraction has 1314 states and 2183 transitions. [2023-12-19 13:43:12,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-19 13:43:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 2183 transitions. [2023-12-19 13:43:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:12,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:12,127 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:12,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:12,336 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 [2023-12-19 13:43:12,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:12,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash 277902119, now seen corresponding path program 1 times [2023-12-19 13:43:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045685228] [2023-12-19 13:43:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:12,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33389156] [2023-12-19 13:43:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:12,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:12,404 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) [2023-12-19 13:43:12,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:43:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:12,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:43:12,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:12,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045685228] [2023-12-19 13:43:12,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33389156] [2023-12-19 13:43:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33389156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:12,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:12,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:43:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253924066] [2023-12-19 13:43:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:43:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:43:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:43:12,940 INFO L87 Difference]: Start difference. First operand 1314 states and 2183 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:15,360 INFO L93 Difference]: Finished difference Result 11711 states and 19398 transitions. [2023-12-19 13:43:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 13:43:15,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:15,401 INFO L225 Difference]: With dead ends: 11711 [2023-12-19 13:43:15,401 INFO L226 Difference]: Without dead ends: 10388 [2023-12-19 13:43:15,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-12-19 13:43:15,405 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 4055 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 6208 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:15,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4055 Valid, 6208 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 13:43:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10388 states. [2023-12-19 13:43:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10388 to 6386. [2023-12-19 13:43:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 5899 states have (on average 1.6416341752839465) internal successors, (9684), 5906 states have internal predecessors, (9684), 474 states have call successors, (474), 12 states have call predecessors, (474), 12 states have return successors, (474), 467 states have call predecessors, (474), 474 states have call successors, (474) [2023-12-19 13:43:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 10632 transitions. [2023-12-19 13:43:15,700 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 10632 transitions. Word has length 541 [2023-12-19 13:43:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:15,701 INFO L495 AbstractCegarLoop]: Abstraction has 6386 states and 10632 transitions. [2023-12-19 13:43:15,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 10632 transitions. [2023-12-19 13:43:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:15,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:15,714 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:15,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:15,923 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 [2023-12-19 13:43:15,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:15,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash 731655847, now seen corresponding path program 1 times [2023-12-19 13:43:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:15,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668611624] [2023-12-19 13:43:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:15,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:15,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704691890] [2023-12-19 13:43:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:15,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:15,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:15,992 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) [2023-12-19 13:43:16,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:43:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:16,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 13:43:16,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:16,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:16,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668611624] [2023-12-19 13:43:16,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704691890] [2023-12-19 13:43:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704691890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:43:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868741268] [2023-12-19 13:43:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:43:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:43:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:43:16,910 INFO L87 Difference]: Start difference. First operand 6386 states and 10632 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:17,344 INFO L93 Difference]: Finished difference Result 17375 states and 28933 transitions. [2023-12-19 13:43:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:43:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:17,387 INFO L225 Difference]: With dead ends: 17375 [2023-12-19 13:43:17,387 INFO L226 Difference]: Without dead ends: 10990 [2023-12-19 13:43:17,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:43:17,402 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 735 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:17,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1942 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:43:17,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10990 states. [2023-12-19 13:43:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10990 to 8915. [2023-12-19 13:43:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8915 states, 8209 states have (on average 1.639663783652089) internal successors, (13460), 8219 states have internal predecessors, (13460), 688 states have call successors, (688), 17 states have call predecessors, (688), 17 states have return successors, (688), 678 states have call predecessors, (688), 688 states have call successors, (688) [2023-12-19 13:43:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8915 states to 8915 states and 14836 transitions. [2023-12-19 13:43:17,783 INFO L78 Accepts]: Start accepts. Automaton has 8915 states and 14836 transitions. Word has length 541 [2023-12-19 13:43:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:17,783 INFO L495 AbstractCegarLoop]: Abstraction has 8915 states and 14836 transitions. [2023-12-19 13:43:17,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 8915 states and 14836 transitions. [2023-12-19 13:43:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:17,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:17,796 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:17,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:18,005 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 [2023-12-19 13:43:18,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:18,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash 601304487, now seen corresponding path program 1 times [2023-12-19 13:43:18,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:18,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065368179] [2023-12-19 13:43:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:18,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:18,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121615633] [2023-12-19 13:43:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:18,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:18,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:18,061 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) [2023-12-19 13:43:18,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:43:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:18,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:43:18,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6243 proven. 99 refuted. 0 times theorem prover too weak. 6298 trivial. 0 not checked. [2023-12-19 13:43:18,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 138 proven. 99 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-19 13:43:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:19,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065368179] [2023-12-19 13:43:19,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:19,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121615633] [2023-12-19 13:43:19,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121615633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:19,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:19,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 13:43:19,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511019505] [2023-12-19 13:43:19,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:19,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:43:19,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:43:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:43:19,084 INFO L87 Difference]: Start difference. First operand 8915 states and 14836 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-19 13:43:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:20,393 INFO L93 Difference]: Finished difference Result 13289 states and 22038 transitions. [2023-12-19 13:43:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:43:20,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 541 [2023-12-19 13:43:20,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:20,406 INFO L225 Difference]: With dead ends: 13289 [2023-12-19 13:43:20,407 INFO L226 Difference]: Without dead ends: 4336 [2023-12-19 13:43:20,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1073 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:43:20,421 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1436 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:20,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1679 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 13:43:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2023-12-19 13:43:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4179. [2023-12-19 13:43:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 3662 states have (on average 1.5832878208629164) internal successors, (5798), 3667 states have internal predecessors, (5798), 498 states have call successors, (498), 18 states have call predecessors, (498), 18 states have return successors, (498), 493 states have call predecessors, (498), 498 states have call successors, (498) [2023-12-19 13:43:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6794 transitions. [2023-12-19 13:43:20,675 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6794 transitions. Word has length 541 [2023-12-19 13:43:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:20,676 INFO L495 AbstractCegarLoop]: Abstraction has 4179 states and 6794 transitions. [2023-12-19 13:43:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-19 13:43:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6794 transitions. [2023-12-19 13:43:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:20,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:20,684 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:20,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:20,896 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 [2023-12-19 13:43:20,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:20,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1496563541, now seen corresponding path program 1 times [2023-12-19 13:43:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658464097] [2023-12-19 13:43:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:20,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057537115] [2023-12-19 13:43:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:20,959 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) [2023-12-19 13:43:20,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:43:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:21,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:43:21,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:21,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:21,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:21,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658464097] [2023-12-19 13:43:21,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057537115] [2023-12-19 13:43:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057537115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:21,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:21,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:43:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098665424] [2023-12-19 13:43:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:21,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:43:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:43:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:21,423 INFO L87 Difference]: Start difference. First operand 4179 states and 6794 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:21,676 INFO L93 Difference]: Finished difference Result 8992 states and 14577 transitions. [2023-12-19 13:43:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:43:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:21,691 INFO L225 Difference]: With dead ends: 8992 [2023-12-19 13:43:21,691 INFO L226 Difference]: Without dead ends: 4955 [2023-12-19 13:43:21,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:21,700 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 485 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:21,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1522 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:43:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2023-12-19 13:43:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 4179. [2023-12-19 13:43:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 3662 states have (on average 1.5767340251228836) internal successors, (5774), 3667 states have internal predecessors, (5774), 498 states have call successors, (498), 18 states have call predecessors, (498), 18 states have return successors, (498), 493 states have call predecessors, (498), 498 states have call successors, (498) [2023-12-19 13:43:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6770 transitions. [2023-12-19 13:43:21,937 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6770 transitions. Word has length 541 [2023-12-19 13:43:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:21,937 INFO L495 AbstractCegarLoop]: Abstraction has 4179 states and 6770 transitions. [2023-12-19 13:43:21,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6770 transitions. [2023-12-19 13:43:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:21,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:21,945 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:21,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:22,154 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 [2023-12-19 13:43:22,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:22,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -438725463, now seen corresponding path program 1 times [2023-12-19 13:43:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138812642] [2023-12-19 13:43:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:22,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:22,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256157859] [2023-12-19 13:43:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:22,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:22,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:22,219 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) [2023-12-19 13:43:22,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 13:43:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:22,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:43:22,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:22,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:22,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138812642] [2023-12-19 13:43:22,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256157859] [2023-12-19 13:43:22,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256157859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:22,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:22,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:43:22,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429226939] [2023-12-19 13:43:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:22,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:43:22,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:22,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:43:22,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:43:22,742 INFO L87 Difference]: Start difference. First operand 4179 states and 6770 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:23,958 INFO L93 Difference]: Finished difference Result 11067 states and 17865 transitions. [2023-12-19 13:43:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 13:43:23,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:23,976 INFO L225 Difference]: With dead ends: 11067 [2023-12-19 13:43:23,976 INFO L226 Difference]: Without dead ends: 7030 [2023-12-19 13:43:23,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 13:43:23,983 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 2548 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2548 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:23,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2548 Valid, 3983 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:43:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7030 states. [2023-12-19 13:43:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7030 to 4341. [2023-12-19 13:43:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4341 states, 3776 states have (on average 1.5548199152542372) internal successors, (5871), 3781 states have internal predecessors, (5871), 542 states have call successors, (542), 22 states have call predecessors, (542), 22 states have return successors, (542), 537 states have call predecessors, (542), 542 states have call successors, (542) [2023-12-19 13:43:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 6955 transitions. [2023-12-19 13:43:24,292 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 6955 transitions. Word has length 541 [2023-12-19 13:43:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:24,293 INFO L495 AbstractCegarLoop]: Abstraction has 4341 states and 6955 transitions. [2023-12-19 13:43:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 6955 transitions. [2023-12-19 13:43:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 13:43:24,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:24,299 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:24,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:24,507 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 [2023-12-19 13:43:24,508 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1157607207, now seen corresponding path program 1 times [2023-12-19 13:43:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032066112] [2023-12-19 13:43:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:24,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:24,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482887060] [2023-12-19 13:43:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:24,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:24,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:24,564 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) [2023-12-19 13:43:24,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 13:43:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:25,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:43:25,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:25,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:25,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:25,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032066112] [2023-12-19 13:43:25,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:25,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482887060] [2023-12-19 13:43:25,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482887060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:25,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:25,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:43:25,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165633849] [2023-12-19 13:43:25,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:43:25,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:43:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:25,546 INFO L87 Difference]: Start difference. First operand 4341 states and 6955 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:25,850 INFO L93 Difference]: Finished difference Result 13021 states and 20863 transitions. [2023-12-19 13:43:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:43:25,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 541 [2023-12-19 13:43:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:25,871 INFO L225 Difference]: With dead ends: 13021 [2023-12-19 13:43:25,871 INFO L226 Difference]: Without dead ends: 8681 [2023-12-19 13:43:25,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:43:25,883 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 272 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:25,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1218 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:43:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8681 states. [2023-12-19 13:43:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8679. [2023-12-19 13:43:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8679 states, 7550 states have (on average 1.5411920529801324) internal successors, (11636), 7560 states have internal predecessors, (11636), 1084 states have call successors, (1084), 44 states have call predecessors, (1084), 44 states have return successors, (1084), 1074 states have call predecessors, (1084), 1084 states have call successors, (1084) [2023-12-19 13:43:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 13804 transitions. [2023-12-19 13:43:26,383 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 13804 transitions. Word has length 541 [2023-12-19 13:43:26,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:26,384 INFO L495 AbstractCegarLoop]: Abstraction has 8679 states and 13804 transitions. [2023-12-19 13:43:26,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 13804 transitions. [2023-12-19 13:43:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-19 13:43:26,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:26,392 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:26,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:26,601 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 [2023-12-19 13:43:26,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:26,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash -624032153, now seen corresponding path program 1 times [2023-12-19 13:43:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:26,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719976750] [2023-12-19 13:43:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:26,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:26,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586282716] [2023-12-19 13:43:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:26,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:26,676 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) [2023-12-19 13:43:26,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 13:43:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:27,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 13:43:27,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-19 13:43:27,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:43:27,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:27,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719976750] [2023-12-19 13:43:27,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:27,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586282716] [2023-12-19 13:43:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586282716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:43:27,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:43:27,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 13:43:27,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149646114] [2023-12-19 13:43:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:43:27,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:43:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:43:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:43:27,554 INFO L87 Difference]: Start difference. First operand 8679 states and 13804 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:28,927 INFO L93 Difference]: Finished difference Result 16223 states and 25752 transitions. [2023-12-19 13:43:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 13:43:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 542 [2023-12-19 13:43:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:28,946 INFO L225 Difference]: With dead ends: 16223 [2023-12-19 13:43:28,946 INFO L226 Difference]: Without dead ends: 11517 [2023-12-19 13:43:28,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-12-19 13:43:28,956 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 4840 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4840 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:28,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4840 Valid, 3979 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:43:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11517 states. [2023-12-19 13:43:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11517 to 8679. [2023-12-19 13:43:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8679 states, 7550 states have (on average 1.5401324503311258) internal successors, (11628), 7560 states have internal predecessors, (11628), 1084 states have call successors, (1084), 44 states have call predecessors, (1084), 44 states have return successors, (1084), 1074 states have call predecessors, (1084), 1084 states have call successors, (1084) [2023-12-19 13:43:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 13796 transitions. [2023-12-19 13:43:29,517 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 13796 transitions. Word has length 542 [2023-12-19 13:43:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:29,518 INFO L495 AbstractCegarLoop]: Abstraction has 8679 states and 13796 transitions. [2023-12-19 13:43:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-19 13:43:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 13796 transitions. [2023-12-19 13:43:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-19 13:43:29,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:29,524 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:29,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:29,732 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 [2023-12-19 13:43:29,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:29,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:29,733 INFO L85 PathProgramCache]: Analyzing trace with hash 627367496, now seen corresponding path program 1 times [2023-12-19 13:43:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:29,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718300700] [2023-12-19 13:43:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:29,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:29,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355610242] [2023-12-19 13:43:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:29,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:29,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:29,780 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) [2023-12-19 13:43:29,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 13:43:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:30,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:43:30,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 2617 proven. 210 refuted. 0 times theorem prover too weak. 9813 trivial. 0 not checked. [2023-12-19 13:43:30,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 27 proven. 210 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-19 13:43:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718300700] [2023-12-19 13:43:31,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355610242] [2023-12-19 13:43:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355610242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:31,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 13:43:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764854971] [2023-12-19 13:43:31,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:31,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:43:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:43:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:43:31,078 INFO L87 Difference]: Start difference. First operand 8679 states and 13796 transitions. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2023-12-19 13:43:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:31,838 INFO L93 Difference]: Finished difference Result 17497 states and 27713 transitions. [2023-12-19 13:43:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 13:43:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) Word has length 542 [2023-12-19 13:43:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:31,856 INFO L225 Difference]: With dead ends: 17497 [2023-12-19 13:43:31,856 INFO L226 Difference]: Without dead ends: 8819 [2023-12-19 13:43:31,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:43:31,870 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 570 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:31,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1082 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:43:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8819 states. [2023-12-19 13:43:32,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8819 to 8751. [2023-12-19 13:43:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8751 states, 7604 states have (on average 1.5089426617569701) internal successors, (11474), 7614 states have internal predecessors, (11474), 1084 states have call successors, (1084), 62 states have call predecessors, (1084), 62 states have return successors, (1084), 1074 states have call predecessors, (1084), 1084 states have call successors, (1084) [2023-12-19 13:43:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8751 states to 8751 states and 13642 transitions. [2023-12-19 13:43:32,447 INFO L78 Accepts]: Start accepts. Automaton has 8751 states and 13642 transitions. Word has length 542 [2023-12-19 13:43:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:32,448 INFO L495 AbstractCegarLoop]: Abstraction has 8751 states and 13642 transitions. [2023-12-19 13:43:32,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2023-12-19 13:43:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 8751 states and 13642 transitions. [2023-12-19 13:43:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-19 13:43:32,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:32,454 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:32,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:32,663 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 [2023-12-19 13:43:32,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:32,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1688702566, now seen corresponding path program 1 times [2023-12-19 13:43:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325790878] [2023-12-19 13:43:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:32,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344260378] [2023-12-19 13:43:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:32,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:32,717 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) [2023-12-19 13:43:32,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 13:43:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:33,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:43:33,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6327 proven. 105 refuted. 0 times theorem prover too weak. 6208 trivial. 0 not checked. [2023-12-19 13:43:33,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 132 proven. 105 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-19 13:43:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325790878] [2023-12-19 13:43:33,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344260378] [2023-12-19 13:43:33,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344260378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:33,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:33,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 13:43:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382681079] [2023-12-19 13:43:33,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:33,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:43:33,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:43:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:43:33,633 INFO L87 Difference]: Start difference. First operand 8751 states and 13642 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-19 13:43:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:35,000 INFO L93 Difference]: Finished difference Result 16183 states and 25068 transitions. [2023-12-19 13:43:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:43:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 543 [2023-12-19 13:43:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:35,017 INFO L225 Difference]: With dead ends: 16183 [2023-12-19 13:43:35,017 INFO L226 Difference]: Without dead ends: 7433 [2023-12-19 13:43:35,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1077 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 13:43:35,031 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1137 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:35,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1914 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:43:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2023-12-19 13:43:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 6518. [2023-12-19 13:43:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6518 states, 5496 states have (on average 1.4887190684133915) internal successors, (8182), 5503 states have internal predecessors, (8182), 954 states have call successors, (954), 67 states have call predecessors, (954), 67 states have return successors, (954), 947 states have call predecessors, (954), 954 states have call successors, (954) [2023-12-19 13:43:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6518 states to 6518 states and 10090 transitions. [2023-12-19 13:43:35,558 INFO L78 Accepts]: Start accepts. Automaton has 6518 states and 10090 transitions. Word has length 543 [2023-12-19 13:43:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:35,559 INFO L495 AbstractCegarLoop]: Abstraction has 6518 states and 10090 transitions. [2023-12-19 13:43:35,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-19 13:43:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 6518 states and 10090 transitions. [2023-12-19 13:43:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-19 13:43:35,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:35,565 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:35,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:35,772 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 [2023-12-19 13:43:35,773 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:35,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash 540346828, now seen corresponding path program 1 times [2023-12-19 13:43:35,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75761768] [2023-12-19 13:43:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:35,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:35,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411141210] [2023-12-19 13:43:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:35,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:35,824 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) [2023-12-19 13:43:35,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 13:43:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:36,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:43:36,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 2617 proven. 210 refuted. 0 times theorem prover too weak. 9813 trivial. 0 not checked. [2023-12-19 13:43:37,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 27 proven. 210 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-19 13:43:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75761768] [2023-12-19 13:43:37,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411141210] [2023-12-19 13:43:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411141210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:37,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:37,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-19 13:43:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16161024] [2023-12-19 13:43:37,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:43:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:43:37,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:43:37,995 INFO L87 Difference]: Start difference. First operand 6518 states and 10090 transitions. Second operand has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-19 13:43:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:40,080 INFO L93 Difference]: Finished difference Result 20182 states and 31382 transitions. [2023-12-19 13:43:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:43:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) Word has length 543 [2023-12-19 13:43:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:40,101 INFO L225 Difference]: With dead ends: 20182 [2023-12-19 13:43:40,101 INFO L226 Difference]: Without dead ends: 13750 [2023-12-19 13:43:40,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2023-12-19 13:43:40,109 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 2746 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2835 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:40,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2835 Valid, 2819 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 13:43:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13750 states. [2023-12-19 13:43:41,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13750 to 12853. [2023-12-19 13:43:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12853 states, 11205 states have (on average 1.498438197233378) internal successors, (16790), 11229 states have internal predecessors, (16790), 1534 states have call successors, (1534), 113 states have call predecessors, (1534), 113 states have return successors, (1534), 1510 states have call predecessors, (1534), 1534 states have call successors, (1534) [2023-12-19 13:43:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12853 states to 12853 states and 19858 transitions. [2023-12-19 13:43:41,061 INFO L78 Accepts]: Start accepts. Automaton has 12853 states and 19858 transitions. Word has length 543 [2023-12-19 13:43:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:41,062 INFO L495 AbstractCegarLoop]: Abstraction has 12853 states and 19858 transitions. [2023-12-19 13:43:41,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-19 13:43:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 12853 states and 19858 transitions. [2023-12-19 13:43:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-19 13:43:41,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:41,068 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:41,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 13:43:41,268 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 [2023-12-19 13:43:41,268 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:41,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1926550222, now seen corresponding path program 1 times [2023-12-19 13:43:41,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022986375] [2023-12-19 13:43:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:41,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180116308] [2023-12-19 13:43:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:41,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:41,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:41,323 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) [2023-12-19 13:43:41,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 13:43:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:41,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:43:41,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-19 13:43:42,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 72 proven. 165 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-19 13:43:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:43,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022986375] [2023-12-19 13:43:43,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:43,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180116308] [2023-12-19 13:43:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180116308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:43,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:43,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 13:43:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658870938] [2023-12-19 13:43:43,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 13:43:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 13:43:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:43:43,207 INFO L87 Difference]: Start difference. First operand 12853 states and 19858 transitions. Second operand has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-19 13:43:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:43:46,268 INFO L93 Difference]: Finished difference Result 55457 states and 86215 transitions. [2023-12-19 13:43:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 13:43:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) Word has length 543 [2023-12-19 13:43:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:43:46,325 INFO L225 Difference]: With dead ends: 55457 [2023-12-19 13:43:46,325 INFO L226 Difference]: Without dead ends: 42690 [2023-12-19 13:43:46,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 13:43:46,345 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 3909 mSDsluCounter, 6442 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 1067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3988 SdHoareTripleChecker+Valid, 7133 SdHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1067 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:43:46,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3988 Valid, 7133 Invalid, 3233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1067 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 13:43:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42690 states. [2023-12-19 13:43:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42690 to 21166. [2023-12-19 13:43:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21166 states, 18261 states have (on average 1.4889107934943322) internal successors, (27189), 18297 states have internal predecessors, (27189), 2690 states have call successors, (2690), 214 states have call predecessors, (2690), 214 states have return successors, (2690), 2654 states have call predecessors, (2690), 2690 states have call successors, (2690) [2023-12-19 13:43:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21166 states to 21166 states and 32569 transitions. [2023-12-19 13:43:48,047 INFO L78 Accepts]: Start accepts. Automaton has 21166 states and 32569 transitions. Word has length 543 [2023-12-19 13:43:48,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:43:48,048 INFO L495 AbstractCegarLoop]: Abstraction has 21166 states and 32569 transitions. [2023-12-19 13:43:48,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-19 13:43:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 21166 states and 32569 transitions. [2023-12-19 13:43:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-19 13:43:48,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:43:48,055 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:43:48,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 13:43:48,255 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 [2023-12-19 13:43:48,256 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:43:48,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:43:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 947144293, now seen corresponding path program 1 times [2023-12-19 13:43:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:43:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030084603] [2023-12-19 13:43:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:43:48,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:43:48,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737497531] [2023-12-19 13:43:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:43:48,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:43:48,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:43:48,309 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) [2023-12-19 13:43:48,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 13:43:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:43:48,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 13:43:48,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:43:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 4322 proven. 591 refuted. 0 times theorem prover too weak. 7727 trivial. 0 not checked. [2023-12-19 13:43:50,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:43:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 102 proven. 600 refuted. 0 times theorem prover too weak. 11938 trivial. 0 not checked. [2023-12-19 13:43:52,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:43:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030084603] [2023-12-19 13:43:52,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:43:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737497531] [2023-12-19 13:43:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737497531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:43:52,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:43:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-19 13:43:52,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235862410] [2023-12-19 13:43:52,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:43:52,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 13:43:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:43:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 13:43:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-12-19 13:43:52,643 INFO L87 Difference]: Start difference. First operand 21166 states and 32569 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 22 states have internal predecessors, (272), 7 states have call successors, (151), 4 states have call predecessors, (151), 10 states have return successors, (152), 7 states have call predecessors, (152), 7 states have call successors, (152) [2023-12-19 13:43:56,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:44:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:44:01,002 INFO L93 Difference]: Finished difference Result 68195 states and 102516 transitions. [2023-12-19 13:44:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 13:44:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 22 states have internal predecessors, (272), 7 states have call successors, (151), 4 states have call predecessors, (151), 10 states have return successors, (152), 7 states have call predecessors, (152), 7 states have call successors, (152) Word has length 544 [2023-12-19 13:44:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:44:01,103 INFO L225 Difference]: With dead ends: 68195 [2023-12-19 13:44:01,103 INFO L226 Difference]: Without dead ends: 48301 [2023-12-19 13:44:01,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1072 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1136, Invalid=3286, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 13:44:01,130 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 3156 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:44:01,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3163 Valid, 3045 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 13:44:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48301 states. [2023-12-19 13:44:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48301 to 24118. [2023-12-19 13:44:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24118 states, 21150 states have (on average 1.4741371158392436) internal successors, (31178), 21186 states have internal predecessors, (31178), 2642 states have call successors, (2642), 325 states have call predecessors, (2642), 325 states have return successors, (2642), 2606 states have call predecessors, (2642), 2642 states have call successors, (2642) [2023-12-19 13:44:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24118 states to 24118 states and 36462 transitions. [2023-12-19 13:44:02,961 INFO L78 Accepts]: Start accepts. Automaton has 24118 states and 36462 transitions. Word has length 544 [2023-12-19 13:44:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:44:02,961 INFO L495 AbstractCegarLoop]: Abstraction has 24118 states and 36462 transitions. [2023-12-19 13:44:02,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 22 states have internal predecessors, (272), 7 states have call successors, (151), 4 states have call predecessors, (151), 10 states have return successors, (152), 7 states have call predecessors, (152), 7 states have call successors, (152) [2023-12-19 13:44:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24118 states and 36462 transitions. [2023-12-19 13:44:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-19 13:44:02,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:44:02,969 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:44:02,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 13:44:03,179 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 [2023-12-19 13:44:03,179 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:44:03,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:44:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash 918644003, now seen corresponding path program 1 times [2023-12-19 13:44:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:44:03,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175555820] [2023-12-19 13:44:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:44:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:44:03,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:44:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232518332] [2023-12-19 13:44:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:44:03,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:44:03,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:44:03,230 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) [2023-12-19 13:44:03,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 13:44:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:44:03,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-19 13:44:03,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:44:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 9709 proven. 975 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2023-12-19 13:44:09,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:44:33,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:44:33,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175555820] [2023-12-19 13:44:33,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:44:33,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232518332] [2023-12-19 13:44:33,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232518332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 13:44:33,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:44:33,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2023-12-19 13:44:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319250633] [2023-12-19 13:44:33,130 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 13:44:33,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 13:44:33,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:44:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 13:44:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1892, Unknown=1, NotChecked=0, Total=2256 [2023-12-19 13:44:33,133 INFO L87 Difference]: Start difference. First operand 24118 states and 36462 transitions. Second operand has 33 states, 33 states have (on average 5.818181818181818) internal successors, (192), 31 states have internal predecessors, (192), 9 states have call successors, (80), 9 states have call predecessors, (80), 16 states have return successors, (80), 9 states have call predecessors, (80), 9 states have call successors, (80) [2023-12-19 13:45:16,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:21,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:28,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:30,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:34,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:38,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:42,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:45:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:45:47,290 INFO L93 Difference]: Finished difference Result 185649 states and 281260 transitions. [2023-12-19 13:45:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-19 13:45:47,292 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.818181818181818) internal successors, (192), 31 states have internal predecessors, (192), 9 states have call successors, (80), 9 states have call predecessors, (80), 16 states have return successors, (80), 9 states have call predecessors, (80), 9 states have call successors, (80) Word has length 544 [2023-12-19 13:45:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:45:47,500 INFO L225 Difference]: With dead ends: 185649 [2023-12-19 13:45:47,500 INFO L226 Difference]: Without dead ends: 161982 [2023-12-19 13:45:47,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=2208, Invalid=9344, Unknown=4, NotChecked=0, Total=11556 [2023-12-19 13:45:47,540 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 5644 mSDsluCounter, 8842 mSDsCounter, 0 mSdLazyCounter, 7136 mSolverCounterSat, 353 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 9570 SdHoareTripleChecker+Invalid, 7494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 7136 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:45:47,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5644 Valid, 9570 Invalid, 7494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 7136 Invalid, 5 Unknown, 0 Unchecked, 41.7s Time] [2023-12-19 13:45:47,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161982 states. [2023-12-19 13:45:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161982 to 63376. [2023-12-19 13:45:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63376 states, 56689 states have (on average 1.4842738450140238) internal successors, (84142), 56773 states have internal predecessors, (84142), 5612 states have call successors, (5612), 1074 states have call predecessors, (5612), 1074 states have return successors, (5612), 5528 states have call predecessors, (5612), 5612 states have call successors, (5612) [2023-12-19 13:45:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63376 states to 63376 states and 95366 transitions. [2023-12-19 13:45:52,040 INFO L78 Accepts]: Start accepts. Automaton has 63376 states and 95366 transitions. Word has length 544 [2023-12-19 13:45:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:45:52,040 INFO L495 AbstractCegarLoop]: Abstraction has 63376 states and 95366 transitions. [2023-12-19 13:45:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.818181818181818) internal successors, (192), 31 states have internal predecessors, (192), 9 states have call successors, (80), 9 states have call predecessors, (80), 16 states have return successors, (80), 9 states have call predecessors, (80), 9 states have call successors, (80) [2023-12-19 13:45:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 63376 states and 95366 transitions. [2023-12-19 13:45:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-19 13:45:52,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:45:52,054 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:45:52,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 13:45:52,264 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 [2023-12-19 13:45:52,264 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:45:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:45:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1872584161, now seen corresponding path program 1 times [2023-12-19 13:45:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:45:52,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429864703] [2023-12-19 13:45:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:45:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:45:52,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:45:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384459717] [2023-12-19 13:45:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:45:52,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:45:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:45:52,313 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:45:52,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 13:45:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:45:53,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 13:45:53,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:46:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 9526 proven. 1071 refuted. 0 times theorem prover too weak. 2043 trivial. 0 not checked. [2023-12-19 13:46:04,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:46:39,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:46:39,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429864703] [2023-12-19 13:46:39,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:46:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384459717] [2023-12-19 13:46:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384459717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 13:46:39,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:46:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2023-12-19 13:46:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990368740] [2023-12-19 13:46:39,702 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 13:46:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-19 13:46:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:46:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-19 13:46:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2875, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 13:46:39,704 INFO L87 Difference]: Start difference. First operand 63376 states and 95366 transitions. Second operand has 44 states, 44 states have (on average 4.431818181818182) internal successors, (195), 41 states have internal predecessors, (195), 10 states have call successors, (80), 10 states have call predecessors, (80), 17 states have return successors, (80), 10 states have call predecessors, (80), 10 states have call successors, (80) [2023-12-19 13:46:56,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:47:02,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:47:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:47:10,590 INFO L93 Difference]: Finished difference Result 141804 states and 212315 transitions. [2023-12-19 13:47:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-19 13:47:10,591 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.431818181818182) internal successors, (195), 41 states have internal predecessors, (195), 10 states have call successors, (80), 10 states have call predecessors, (80), 17 states have return successors, (80), 10 states have call predecessors, (80), 10 states have call successors, (80) Word has length 544 [2023-12-19 13:47:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:47:10,715 INFO L225 Difference]: With dead ends: 141804 [2023-12-19 13:47:10,715 INFO L226 Difference]: Without dead ends: 83877 [2023-12-19 13:47:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=2164, Invalid=11642, Unknown=0, NotChecked=0, Total=13806 [2023-12-19 13:47:10,759 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 7459 mSDsluCounter, 8272 mSDsCounter, 0 mSdLazyCounter, 8109 mSolverCounterSat, 434 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7459 SdHoareTripleChecker+Valid, 8849 SdHoareTripleChecker+Invalid, 8544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 8109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:47:10,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7459 Valid, 8849 Invalid, 8544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [434 Valid, 8109 Invalid, 1 Unknown, 0 Unchecked, 18.0s Time] [2023-12-19 13:47:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83877 states. [2023-12-19 13:47:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83877 to 67270. [2023-12-19 13:47:15,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67270 states, 60541 states have (on average 1.483655704398672) internal successors, (89822), 60630 states have internal predecessors, (89822), 5647 states have call successors, (5647), 1081 states have call predecessors, (5647), 1081 states have return successors, (5647), 5558 states have call predecessors, (5647), 5647 states have call successors, (5647) [2023-12-19 13:47:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67270 states to 67270 states and 101116 transitions. [2023-12-19 13:47:15,123 INFO L78 Accepts]: Start accepts. Automaton has 67270 states and 101116 transitions. Word has length 544 [2023-12-19 13:47:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:47:15,123 INFO L495 AbstractCegarLoop]: Abstraction has 67270 states and 101116 transitions. [2023-12-19 13:47:15,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.431818181818182) internal successors, (195), 41 states have internal predecessors, (195), 10 states have call successors, (80), 10 states have call predecessors, (80), 17 states have return successors, (80), 10 states have call predecessors, (80), 10 states have call successors, (80) [2023-12-19 13:47:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 67270 states and 101116 transitions. [2023-12-19 13:47:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-19 13:47:15,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:47:15,139 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:47:15,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 13:47:15,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:47:15,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:47:15,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:47:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2147343775, now seen corresponding path program 1 times [2023-12-19 13:47:15,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:47:15,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482068428] [2023-12-19 13:47:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:47:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:47:15,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:47:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930973155] [2023-12-19 13:47:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:47:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:47:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:47:15,388 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:47:15,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 13:47:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:47:30,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 13:47:30,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:47:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 7103 proven. 552 refuted. 0 times theorem prover too weak. 4985 trivial. 0 not checked. [2023-12-19 13:47:35,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:47:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 141 proven. 561 refuted. 0 times theorem prover too weak. 11938 trivial. 0 not checked. [2023-12-19 13:47:41,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:47:41,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482068428] [2023-12-19 13:47:41,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:47:41,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930973155] [2023-12-19 13:47:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930973155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:47:41,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:47:41,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-12-19 13:47:41,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733543088] [2023-12-19 13:47:41,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:47:41,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 13:47:41,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:47:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 13:47:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2023-12-19 13:47:41,927 INFO L87 Difference]: Start difference. First operand 67270 states and 101116 transitions. Second operand has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 30 states have internal predecessors, (274), 7 states have call successors, (154), 4 states have call predecessors, (154), 10 states have return successors, (155), 7 states have call predecessors, (155), 7 states have call successors, (155) [2023-12-19 13:47:59,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:08,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:12,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:20,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:28,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:31,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:37,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:41,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:48:58,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:49:05,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:49:17,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:50:57,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:52:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:52:05,182 INFO L93 Difference]: Finished difference Result 352173 states and 515548 transitions. [2023-12-19 13:52:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 13:52:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 30 states have internal predecessors, (274), 7 states have call successors, (154), 4 states have call predecessors, (154), 10 states have return successors, (155), 7 states have call predecessors, (155), 7 states have call successors, (155) Word has length 544 [2023-12-19 13:52:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:52:05,977 INFO L225 Difference]: With dead ends: 352173 [2023-12-19 13:52:05,978 INFO L226 Difference]: Without dead ends: 291957 [2023-12-19 13:52:06,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 78.4s TimeCoverageRelationStatistics Valid=5353, Invalid=19769, Unknown=0, NotChecked=0, Total=25122 [2023-12-19 13:52:06,080 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 6438 mSDsluCounter, 8965 mSDsCounter, 0 mSdLazyCounter, 8015 mSolverCounterSat, 1256 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6463 SdHoareTripleChecker+Valid, 9935 SdHoareTripleChecker+Invalid, 9276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 8015 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:52:06,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6463 Valid, 9935 Invalid, 9276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1256 Valid, 8015 Invalid, 5 Unknown, 0 Unchecked, 163.1s Time] [2023-12-19 13:52:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291957 states. [2023-12-19 13:52:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291957 to 149158. [2023-12-19 13:52:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149158 states, 135245 states have (on average 1.4854153573145032) internal successors, (200895), 135557 states have internal predecessors, (200895), 10880 states have call successors, (10880), 3032 states have call predecessors, (10880), 3032 states have return successors, (10880), 10568 states have call predecessors, (10880), 10880 states have call successors, (10880) [2023-12-19 13:52:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149158 states to 149158 states and 222655 transitions. [2023-12-19 13:52:19,019 INFO L78 Accepts]: Start accepts. Automaton has 149158 states and 222655 transitions. Word has length 544 [2023-12-19 13:52:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:52:19,020 INFO L495 AbstractCegarLoop]: Abstraction has 149158 states and 222655 transitions. [2023-12-19 13:52:19,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 30 states have internal predecessors, (274), 7 states have call successors, (154), 4 states have call predecessors, (154), 10 states have return successors, (155), 7 states have call predecessors, (155), 7 states have call successors, (155) [2023-12-19 13:52:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 149158 states and 222655 transitions. [2023-12-19 13:52:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-19 13:52:19,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:52:19,045 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:52:19,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 13:52:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:52:19,254 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:52:19,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:52:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash 268212829, now seen corresponding path program 1 times [2023-12-19 13:52:19,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:52:19,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452144328] [2023-12-19 13:52:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:52:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:52:19,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:52:19,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104730302] [2023-12-19 13:52:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:52:19,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:52:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:52:19,310 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:52:19,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 13:57:01,291 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 [2023-12-19 13:57:01,291 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:57:02,491 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 13:57:02,501 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forcibly destroying the process [2023-12-19 13:57:02,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 13:57:02,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 137 [2023-12-19 13:57:02,519 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 13:57:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 13:57:02,519 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 545 with TraceHistMax 80,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 13:57:02,525 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:57:02,528 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 13:57:02,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:57:02 BoogieIcfgContainer [2023-12-19 13:57:02,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 13:57:02,536 INFO L158 Benchmark]: Toolchain (without parser) took 838754.05ms. Allocated memory was 288.4MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 232.6MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-19 13:57:02,536 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:57:02,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.90ms. Allocated memory is still 288.4MB. Free memory was 232.1MB in the beginning and 192.8MB in the end (delta: 39.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-19 13:57:02,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 184.90ms. Allocated memory is still 288.4MB. Free memory was 192.8MB in the beginning and 231.2MB in the end (delta: -38.5MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2023-12-19 13:57:02,537 INFO L158 Benchmark]: Boogie Preprocessor took 169.91ms. Allocated memory is still 288.4MB. Free memory was 231.2MB in the beginning and 185.1MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-12-19 13:57:02,539 INFO L158 Benchmark]: RCFGBuilder took 1363.57ms. Allocated memory is still 288.4MB. Free memory was 185.1MB in the beginning and 203.4MB in the end (delta: -18.3MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. [2023-12-19 13:57:02,541 INFO L158 Benchmark]: TraceAbstraction took 836427.98ms. Allocated memory was 288.4MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 202.9MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-19 13:57:02,544 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 601.90ms. Allocated memory is still 288.4MB. Free memory was 232.1MB in the beginning and 192.8MB in the end (delta: 39.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 184.90ms. Allocated memory is still 288.4MB. Free memory was 192.8MB in the beginning and 231.2MB in the end (delta: -38.5MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 169.91ms. Allocated memory is still 288.4MB. Free memory was 231.2MB in the beginning and 185.1MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1363.57ms. Allocated memory is still 288.4MB. Free memory was 185.1MB in the beginning and 203.4MB in the end (delta: -18.3MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. * TraceAbstraction took 836427.98ms. Allocated memory was 288.4MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 202.9MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 1.0GB. 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 545 with TraceHistMax 80,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 340 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 836.4s, OverallIterations: 21, TraceHistogramMax: 80, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 394.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 47640 SdHoareTripleChecker+Valid, 237.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47291 mSDsluCounter, 70677 SdHoareTripleChecker+Invalid, 232.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56018 mSDsCounter, 7202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33928 IncrementalHoareTripleChecker+Invalid, 41141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7202 mSolverCounterUnsat, 14659 mSDtfsCounter, 33928 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15874 GetRequests, 15273 SyntacticMatches, 5 SemanticMatches, 596 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17832 ImplicationChecksByTransitivity, 144.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149158occurred in iteration=20, InterpolantAutomatonStates: 487, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 30.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 318671 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 19.3s SatisfiabilityAnalysisTime, 98.7s InterpolantComputationTime, 11381 NumberOfCodeBlocks, 11381 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 15153 ConstructedInterpolants, 55 QuantifiedInterpolants, 82125 SizeOfPredicates, 109 NumberOfNonLiveVariables, 26147 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 347824/353920 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