/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_fillercode_fillercodesize_ps-cn-250_file-18.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:47:32,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:47:32,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:47:32,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:47:32,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:47:32,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:47:32,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:47:32,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:47:33,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:47:33,000 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:47:33,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:47:33,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:47:33,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:47:33,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:47:33,001 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:47:33,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:47:33,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:47:33,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:47:33,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:47:33,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:47:33,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:47:33,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:47:33,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:47:33,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:47:33,011 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:47:33,012 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:47:33,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:47:33,012 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:47:33,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:47:33,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:47:33,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:47:33,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:47:33,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:47:33,014 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:47:33,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:47:33,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:47:33,016 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:47:33,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:47:33,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:47:33,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:47:33,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:47:33,200 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:47:33,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-18.i [2023-12-15 19:47:34,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:47:34,467 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:47:34,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-18.i [2023-12-15 19:47:34,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b191eb756/fe5bbdc7f90c4ecba4f3e01ea9fba0b5/FLAG61675ba7f [2023-12-15 19:47:34,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b191eb756/fe5bbdc7f90c4ecba4f3e01ea9fba0b5 [2023-12-15 19:47:34,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:47:34,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:47:34,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:47:34,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:47:34,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:47:34,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:34,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57381d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34, skipping insertion in model container [2023-12-15 19:47:34,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:34,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:47:34,634 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_fillercode_fillercodesize_ps-cn-250_file-18.i[916,929] [2023-12-15 19:47:34,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:47:34,772 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:47:34,780 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_fillercode_fillercodesize_ps-cn-250_file-18.i[916,929] [2023-12-15 19:47:34,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:47:34,876 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:47:34,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34 WrapperNode [2023-12-15 19:47:34,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:47:34,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:47:34,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:47:34,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:47:34,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:34,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:34,964 INFO L138 Inliner]: procedures = 26, calls = 95, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 578 [2023-12-15 19:47:34,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:47:34,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:47:34,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:47:34,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:47:34,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:34,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:34,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,018 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:47:35,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:47:35,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:47:35,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:47:35,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:47:35,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (1/1) ... [2023-12-15 19:47:35,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:47:35,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:35,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:47:35,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:47:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:47:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:47:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:47:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:47:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:47:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:47:35,246 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:47:35,249 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:47:35,864 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:47:35,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:47:35,900 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:47:35,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:47:35 BoogieIcfgContainer [2023-12-15 19:47:35,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:47:35,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:47:35,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:47:35,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:47:35,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:47:34" (1/3) ... [2023-12-15 19:47:35,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f6b1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:47:35, skipping insertion in model container [2023-12-15 19:47:35,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:34" (2/3) ... [2023-12-15 19:47:35,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f6b1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:47:35, skipping insertion in model container [2023-12-15 19:47:35,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:47:35" (3/3) ... [2023-12-15 19:47:35,906 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-18.i [2023-12-15 19:47:35,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:47:35,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:47:35,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:47:35,967 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;@556a2bdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:47:35,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:47:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 142 states have (on average 1.5704225352112675) internal successors, (223), 143 states have internal predecessors, (223), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 19:47:35,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:35,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:35,996 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:35,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:35,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash -236378922, now seen corresponding path program 1 times [2023-12-15 19:47:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498550727] [2023-12-15 19:47:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:36,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:36,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498550727] [2023-12-15 19:47:36,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:47:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793963242] [2023-12-15 19:47:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:36,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:36,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:36,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:36,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:47:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:36,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:47:36,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2023-12-15 19:47:36,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793963242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:36,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:36,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:47:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473076504] [2023-12-15 19:47:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:47:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:47:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:47:36,772 INFO L87 Difference]: Start difference. First operand has 227 states, 142 states have (on average 1.5704225352112675) internal successors, (223), 143 states have internal predecessors, (223), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Second operand has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-15 19:47:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:36,848 INFO L93 Difference]: Finished difference Result 451 states and 854 transitions. [2023-12-15 19:47:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:47:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 2 states have call successors, (82) Word has length 514 [2023-12-15 19:47:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:36,863 INFO L225 Difference]: With dead ends: 451 [2023-12-15 19:47:36,863 INFO L226 Difference]: Without dead ends: 225 [2023-12-15 19:47:36,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:47:36,873 INFO L413 NwaCegarLoop]: 377 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, 377 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:36,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-15 19:47:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-12-15 19:47:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 141 states have (on average 1.5319148936170213) internal successors, (216), 141 states have internal predecessors, (216), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 19:47:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 380 transitions. [2023-12-15 19:47:36,935 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 380 transitions. Word has length 514 [2023-12-15 19:47:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:36,936 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 380 transitions. [2023-12-15 19:47:36,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-15 19:47:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 380 transitions. [2023-12-15 19:47:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:36,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:36,944 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:36,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:47:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:47:37,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:37,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2099031318, now seen corresponding path program 1 times [2023-12-15 19:47:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671355630] [2023-12-15 19:47:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:37,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250849520] [2023-12-15 19:47:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:37,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:37,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:47:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:37,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:37,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:37,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671355630] [2023-12-15 19:47:37,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250849520] [2023-12-15 19:47:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250849520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:37,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:37,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306378671] [2023-12-15 19:47:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:37,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:37,653 INFO L87 Difference]: Start difference. First operand 225 states and 380 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:37,747 INFO L93 Difference]: Finished difference Result 673 states and 1138 transitions. [2023-12-15 19:47:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:37,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:37,752 INFO L225 Difference]: With dead ends: 673 [2023-12-15 19:47:37,753 INFO L226 Difference]: Without dead ends: 449 [2023-12-15 19:47:37,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:37,754 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 376 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:37,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1036 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-15 19:47:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 226. [2023-12-15 19:47:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 142 states have internal predecessors, (217), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 19:47:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 381 transitions. [2023-12-15 19:47:37,788 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 381 transitions. Word has length 514 [2023-12-15 19:47:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:37,790 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 381 transitions. [2023-12-15 19:47:37,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 381 transitions. [2023-12-15 19:47:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:37,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:37,795 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:37,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:38,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:47:38,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:38,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:38,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2121663572, now seen corresponding path program 1 times [2023-12-15 19:47:38,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:38,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197261958] [2023-12-15 19:47:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:38,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:38,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753621805] [2023-12-15 19:47:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:38,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:38,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:38,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:38,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:47:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:38,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:38,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:38,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197261958] [2023-12-15 19:47:38,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:38,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753621805] [2023-12-15 19:47:38,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753621805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:38,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:38,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:38,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559018056] [2023-12-15 19:47:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:38,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:38,389 INFO L87 Difference]: Start difference. First operand 226 states and 381 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:38,449 INFO L93 Difference]: Finished difference Result 675 states and 1139 transitions. [2023-12-15 19:47:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:38,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:38,454 INFO L225 Difference]: With dead ends: 675 [2023-12-15 19:47:38,454 INFO L226 Difference]: Without dead ends: 450 [2023-12-15 19:47:38,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:38,457 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 364 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:38,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 736 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-12-15 19:47:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2023-12-15 19:47:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 281 states have (on average 1.5124555160142348) internal successors, (425), 281 states have internal predecessors, (425), 164 states have call successors, (164), 2 states have call predecessors, (164), 2 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-15 19:47:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 753 transitions. [2023-12-15 19:47:38,495 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 753 transitions. Word has length 514 [2023-12-15 19:47:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 753 transitions. [2023-12-15 19:47:38,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 753 transitions. [2023-12-15 19:47:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:38,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:38,502 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:38,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:38,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:38,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:38,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:38,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1735286232, now seen corresponding path program 1 times [2023-12-15 19:47:38,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:38,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554225602] [2023-12-15 19:47:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:38,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:38,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789967280] [2023-12-15 19:47:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:38,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:38,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:38,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:47:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:39,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:39,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:39,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554225602] [2023-12-15 19:47:39,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789967280] [2023-12-15 19:47:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789967280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:39,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005741310] [2023-12-15 19:47:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:39,089 INFO L87 Difference]: Start difference. First operand 448 states and 753 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:39,129 INFO L93 Difference]: Finished difference Result 1125 states and 1898 transitions. [2023-12-15 19:47:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:39,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:39,132 INFO L225 Difference]: With dead ends: 1125 [2023-12-15 19:47:39,132 INFO L226 Difference]: Without dead ends: 678 [2023-12-15 19:47:39,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:39,134 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 172 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:39,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 736 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-12-15 19:47:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 674. [2023-12-15 19:47:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 471 states have (on average 1.5774946921443738) internal successors, (743), 473 states have internal predecessors, (743), 198 states have call successors, (198), 4 states have call predecessors, (198), 4 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2023-12-15 19:47:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1139 transitions. [2023-12-15 19:47:39,172 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1139 transitions. Word has length 514 [2023-12-15 19:47:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1139 transitions. [2023-12-15 19:47:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1139 transitions. [2023-12-15 19:47:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:39,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:39,177 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:39,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:47:39,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:39,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:39,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1875834842, now seen corresponding path program 1 times [2023-12-15 19:47:39,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:39,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847235664] [2023-12-15 19:47:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:39,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:39,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:39,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559322761] [2023-12-15 19:47:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:39,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:39,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:39,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:39,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:47:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:39,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:47:39,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:40,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:40,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847235664] [2023-12-15 19:47:40,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559322761] [2023-12-15 19:47:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559322761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:47:40,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044491710] [2023-12-15 19:47:40,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:40,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:47:40,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:47:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:40,207 INFO L87 Difference]: Start difference. First operand 674 states and 1139 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:41,069 INFO L93 Difference]: Finished difference Result 5339 states and 9025 transitions. [2023-12-15 19:47:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:47:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:41,089 INFO L225 Difference]: With dead ends: 5339 [2023-12-15 19:47:41,090 INFO L226 Difference]: Without dead ends: 4666 [2023-12-15 19:47:41,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:47:41,093 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1644 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:41,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 3206 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:47:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2023-12-15 19:47:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4654. [2023-12-15 19:47:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 3239 states have (on average 1.5538746526705773) internal successors, (5033), 3253 states have internal predecessors, (5033), 1386 states have call successors, (1386), 28 states have call predecessors, (1386), 28 states have return successors, (1386), 1372 states have call predecessors, (1386), 1386 states have call successors, (1386) [2023-12-15 19:47:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 7805 transitions. [2023-12-15 19:47:41,449 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 7805 transitions. Word has length 514 [2023-12-15 19:47:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:41,451 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 7805 transitions. [2023-12-15 19:47:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 7805 transitions. [2023-12-15 19:47:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:41,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:41,455 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:41,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:41,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:41,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1860316124, now seen corresponding path program 1 times [2023-12-15 19:47:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791721537] [2023-12-15 19:47:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:41,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:41,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744391661] [2023-12-15 19:47:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:41,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:41,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:41,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:47:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:41,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:41,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:42,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791721537] [2023-12-15 19:47:42,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744391661] [2023-12-15 19:47:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744391661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340475041] [2023-12-15 19:47:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:42,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:42,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:42,013 INFO L87 Difference]: Start difference. First operand 4654 states and 7805 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:42,211 INFO L93 Difference]: Finished difference Result 8753 states and 14604 transitions. [2023-12-15 19:47:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:42,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:42,227 INFO L225 Difference]: With dead ends: 8753 [2023-12-15 19:47:42,227 INFO L226 Difference]: Without dead ends: 4100 [2023-12-15 19:47:42,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:42,237 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 193 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:42,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 830 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2023-12-15 19:47:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3488. [2023-12-15 19:47:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 2311 states have (on average 1.5097360450021635) internal successors, (3489), 2311 states have internal predecessors, (3489), 1148 states have call successors, (1148), 28 states have call predecessors, (1148), 28 states have return successors, (1148), 1148 states have call predecessors, (1148), 1148 states have call successors, (1148) [2023-12-15 19:47:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 5785 transitions. [2023-12-15 19:47:42,464 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 5785 transitions. Word has length 514 [2023-12-15 19:47:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:42,464 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 5785 transitions. [2023-12-15 19:47:42,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 5785 transitions. [2023-12-15 19:47:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:42,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:42,468 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:42,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:42,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:42,679 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:42,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash -646927080, now seen corresponding path program 1 times [2023-12-15 19:47:42,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:42,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196778279] [2023-12-15 19:47:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:42,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318161005] [2023-12-15 19:47:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:42,733 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:42,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:47:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:43,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:47:43,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:44,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196778279] [2023-12-15 19:47:44,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318161005] [2023-12-15 19:47:44,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318161005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:44,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143808563] [2023-12-15 19:47:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:44,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:44,046 INFO L87 Difference]: Start difference. First operand 3488 states and 5785 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:44,409 INFO L93 Difference]: Finished difference Result 7426 states and 12315 transitions. [2023-12-15 19:47:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:47:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:44,428 INFO L225 Difference]: With dead ends: 7426 [2023-12-15 19:47:44,429 INFO L226 Difference]: Without dead ends: 3939 [2023-12-15 19:47:44,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:44,439 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 136 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:44,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1012 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:47:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2023-12-15 19:47:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3937. [2023-12-15 19:47:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 2592 states have (on average 1.5007716049382716) internal successors, (3890), 2592 states have internal predecessors, (3890), 1312 states have call successors, (1312), 32 states have call predecessors, (1312), 32 states have return successors, (1312), 1312 states have call predecessors, (1312), 1312 states have call successors, (1312) [2023-12-15 19:47:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 6514 transitions. [2023-12-15 19:47:44,757 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 6514 transitions. Word has length 514 [2023-12-15 19:47:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:44,758 INFO L495 AbstractCegarLoop]: Abstraction has 3937 states and 6514 transitions. [2023-12-15 19:47:44,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 6514 transitions. [2023-12-15 19:47:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:44,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:44,763 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:44,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 19:47:44,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:44,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:44,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1490932582, now seen corresponding path program 1 times [2023-12-15 19:47:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489561290] [2023-12-15 19:47:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:45,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089091036] [2023-12-15 19:47:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:45,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:45,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:45,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:45,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:47:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:45,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:45,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:45,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:45,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:45,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489561290] [2023-12-15 19:47:45,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:45,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089091036] [2023-12-15 19:47:45,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089091036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:45,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:45,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:45,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120215280] [2023-12-15 19:47:45,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:45,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:45,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:45,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:45,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:45,854 INFO L87 Difference]: Start difference. First operand 3937 states and 6514 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:46,359 INFO L93 Difference]: Finished difference Result 10865 states and 17979 transitions. [2023-12-15 19:47:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:47:46,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:46,395 INFO L225 Difference]: With dead ends: 10865 [2023-12-15 19:47:46,395 INFO L226 Difference]: Without dead ends: 6929 [2023-12-15 19:47:46,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:46,407 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 735 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:46,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1993 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:47:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2023-12-15 19:47:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 4835. [2023-12-15 19:47:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 3154 states have (on average 1.4901712111604313) internal successors, (4700), 3154 states have internal predecessors, (4700), 1640 states have call successors, (1640), 40 states have call predecessors, (1640), 40 states have return successors, (1640), 1640 states have call predecessors, (1640), 1640 states have call successors, (1640) [2023-12-15 19:47:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7980 transitions. [2023-12-15 19:47:46,866 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7980 transitions. Word has length 514 [2023-12-15 19:47:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:46,867 INFO L495 AbstractCegarLoop]: Abstraction has 4835 states and 7980 transitions. [2023-12-15 19:47:46,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7980 transitions. [2023-12-15 19:47:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 19:47:46,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:46,871 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:46,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:47,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:47:47,080 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:47,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash -390546344, now seen corresponding path program 1 times [2023-12-15 19:47:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868492645] [2023-12-15 19:47:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:47,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445951313] [2023-12-15 19:47:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:47,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:47,132 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:47,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:47:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:47,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:47,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:47,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868492645] [2023-12-15 19:47:47,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445951313] [2023-12-15 19:47:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445951313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:47,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:47,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693157657] [2023-12-15 19:47:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:47,465 INFO L87 Difference]: Start difference. First operand 4835 states and 7980 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:47,913 INFO L93 Difference]: Finished difference Result 12409 states and 20442 transitions. [2023-12-15 19:47:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:47,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 514 [2023-12-15 19:47:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:47,948 INFO L225 Difference]: With dead ends: 12409 [2023-12-15 19:47:47,949 INFO L226 Difference]: Without dead ends: 7575 [2023-12-15 19:47:47,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:47,976 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 209 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:47,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 863 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:47:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2023-12-15 19:47:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 7553. [2023-12-15 19:47:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7553 states, 5332 states have (on average 1.5225056264066017) internal successors, (8118), 5352 states have internal predecessors, (8118), 2140 states have call successors, (2140), 80 states have call predecessors, (2140), 80 states have return successors, (2140), 2120 states have call predecessors, (2140), 2140 states have call successors, (2140) [2023-12-15 19:47:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 12398 transitions. [2023-12-15 19:47:48,784 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 12398 transitions. Word has length 514 [2023-12-15 19:47:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:48,784 INFO L495 AbstractCegarLoop]: Abstraction has 7553 states and 12398 transitions. [2023-12-15 19:47:48,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 12398 transitions. [2023-12-15 19:47:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:47:48,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:48,790 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:48,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:48,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:49,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:49,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash 471077767, now seen corresponding path program 1 times [2023-12-15 19:47:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352072199] [2023-12-15 19:47:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:49,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:49,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189708413] [2023-12-15 19:47:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:49,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:49,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:49,057 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:49,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:47:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:49,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:47:49,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 3967 proven. 42 refuted. 0 times theorem prover too weak. 9275 trivial. 0 not checked. [2023-12-15 19:47:49,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:47:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 201 proven. 42 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:47:49,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352072199] [2023-12-15 19:47:49,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189708413] [2023-12-15 19:47:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189708413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:47:49,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:47:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:47:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646715091] [2023-12-15 19:47:49,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:47:49,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:47:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:47:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:47:49,766 INFO L87 Difference]: Start difference. First operand 7553 states and 12398 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-15 19:47:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:50,402 INFO L93 Difference]: Finished difference Result 15385 states and 25055 transitions. [2023-12-15 19:47:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:47:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 515 [2023-12-15 19:47:50,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:50,425 INFO L225 Difference]: With dead ends: 15385 [2023-12-15 19:47:50,426 INFO L226 Difference]: Without dead ends: 7833 [2023-12-15 19:47:50,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1022 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:47:50,439 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 240 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:50,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 705 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:47:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2023-12-15 19:47:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 7633. [2023-12-15 19:47:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 5392 states have (on average 1.5092729970326408) internal successors, (8138), 5412 states have internal predecessors, (8138), 2140 states have call successors, (2140), 100 states have call predecessors, (2140), 100 states have return successors, (2140), 2120 states have call predecessors, (2140), 2140 states have call successors, (2140) [2023-12-15 19:47:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 12418 transitions. [2023-12-15 19:47:50,847 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 12418 transitions. Word has length 515 [2023-12-15 19:47:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:50,847 INFO L495 AbstractCegarLoop]: Abstraction has 7633 states and 12418 transitions. [2023-12-15 19:47:50,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-15 19:47:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 12418 transitions. [2023-12-15 19:47:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:47:50,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:50,852 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:50,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:51,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:47:51,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:51,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:51,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1217865975, now seen corresponding path program 1 times [2023-12-15 19:47:51,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:51,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692897159] [2023-12-15 19:47:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:51,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:51,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090861601] [2023-12-15 19:47:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:51,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:51,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:51,113 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:51,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:47:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:51,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:47:51,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4371 proven. 48 refuted. 0 times theorem prover too weak. 8865 trivial. 0 not checked. [2023-12-15 19:47:51,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:47:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 195 proven. 48 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:47:51,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692897159] [2023-12-15 19:47:51,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090861601] [2023-12-15 19:47:51,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090861601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:47:51,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:47:51,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:47:51,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673487085] [2023-12-15 19:47:51,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:47:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:47:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:51,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:47:51,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:47:51,960 INFO L87 Difference]: Start difference. First operand 7633 states and 12418 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-15 19:47:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:52,555 INFO L93 Difference]: Finished difference Result 15585 states and 25135 transitions. [2023-12-15 19:47:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:47:52,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 515 [2023-12-15 19:47:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:52,576 INFO L225 Difference]: With dead ends: 15585 [2023-12-15 19:47:52,576 INFO L226 Difference]: Without dead ends: 7953 [2023-12-15 19:47:52,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1022 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:47:52,591 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 232 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:52,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 697 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:47:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2023-12-15 19:47:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 7713. [2023-12-15 19:47:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 5452 states have (on average 1.4963316214233309) internal successors, (8158), 5472 states have internal predecessors, (8158), 2140 states have call successors, (2140), 120 states have call predecessors, (2140), 120 states have return successors, (2140), 2120 states have call predecessors, (2140), 2140 states have call successors, (2140) [2023-12-15 19:47:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12438 transitions. [2023-12-15 19:47:53,141 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12438 transitions. Word has length 515 [2023-12-15 19:47:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:53,142 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12438 transitions. [2023-12-15 19:47:53,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-15 19:47:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12438 transitions. [2023-12-15 19:47:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:47:53,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:53,147 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:53,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 19:47:53,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:47:53,354 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:53,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2065984071, now seen corresponding path program 1 times [2023-12-15 19:47:53,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:53,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749327838] [2023-12-15 19:47:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:53,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:53,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133767987] [2023-12-15 19:47:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:53,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:53,389 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:53,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:47:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:53,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:53,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:54,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749327838] [2023-12-15 19:47:54,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133767987] [2023-12-15 19:47:54,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133767987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:54,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:54,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:47:54,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918857578] [2023-12-15 19:47:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:54,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:54,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:54,212 INFO L87 Difference]: Start difference. First operand 7713 states and 12438 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:54,833 INFO L93 Difference]: Finished difference Result 23137 states and 37312 transitions. [2023-12-15 19:47:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:54,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 515 [2023-12-15 19:47:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:54,875 INFO L225 Difference]: With dead ends: 23137 [2023-12-15 19:47:54,876 INFO L226 Difference]: Without dead ends: 15425 [2023-12-15 19:47:54,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:54,896 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 122 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:54,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 786 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2023-12-15 19:47:55,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 15423. [2023-12-15 19:47:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15423 states, 10902 states have (on average 1.4927536231884058) internal successors, (16274), 10942 states have internal predecessors, (16274), 4280 states have call successors, (4280), 240 states have call predecessors, (4280), 240 states have return successors, (4280), 4240 states have call predecessors, (4280), 4280 states have call successors, (4280) [2023-12-15 19:47:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15423 states to 15423 states and 24834 transitions. [2023-12-15 19:47:55,862 INFO L78 Accepts]: Start accepts. Automaton has 15423 states and 24834 transitions. Word has length 515 [2023-12-15 19:47:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:55,863 INFO L495 AbstractCegarLoop]: Abstraction has 15423 states and 24834 transitions. [2023-12-15 19:47:55,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 15423 states and 24834 transitions. [2023-12-15 19:47:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:47:55,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:55,869 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:55,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:56,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:47:56,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:56,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:56,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1550015605, now seen corresponding path program 1 times [2023-12-15 19:47:56,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:56,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991218115] [2023-12-15 19:47:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:56,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:56,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532185273] [2023-12-15 19:47:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:56,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:56,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:56,116 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:56,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:47:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:56,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:56,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:56,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:56,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991218115] [2023-12-15 19:47:56,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532185273] [2023-12-15 19:47:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532185273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:56,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:56,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:47:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967934048] [2023-12-15 19:47:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:56,947 INFO L87 Difference]: Start difference. First operand 15423 states and 24834 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:57,739 INFO L93 Difference]: Finished difference Result 38847 states and 62476 transitions. [2023-12-15 19:47:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:57,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 515 [2023-12-15 19:47:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:57,791 INFO L225 Difference]: With dead ends: 38847 [2023-12-15 19:47:57,792 INFO L226 Difference]: Without dead ends: 23425 [2023-12-15 19:47:57,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:57,811 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 139 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:57,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 736 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2023-12-15 19:47:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 23423. [2023-12-15 19:47:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23423 states, 16642 states have (on average 1.4869607018387212) internal successors, (24746), 16702 states have internal predecessors, (24746), 6420 states have call successors, (6420), 360 states have call predecessors, (6420), 360 states have return successors, (6420), 6360 states have call predecessors, (6420), 6420 states have call successors, (6420) [2023-12-15 19:47:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23423 states to 23423 states and 37586 transitions. [2023-12-15 19:47:59,347 INFO L78 Accepts]: Start accepts. Automaton has 23423 states and 37586 transitions. Word has length 515 [2023-12-15 19:47:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:59,349 INFO L495 AbstractCegarLoop]: Abstraction has 23423 states and 37586 transitions. [2023-12-15 19:47:59,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 23423 states and 37586 transitions. [2023-12-15 19:47:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:47:59,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:59,358 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:59,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:59,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:47:59,567 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:59,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1715592393, now seen corresponding path program 1 times [2023-12-15 19:47:59,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:59,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076669932] [2023-12-15 19:47:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:59,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:59,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:59,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679009534] [2023-12-15 19:47:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:59,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:59,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:59,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:59,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:47:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:59,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 19:47:59,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 8259 proven. 225 refuted. 0 times theorem prover too weak. 4800 trivial. 0 not checked. [2023-12-15 19:48:01,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:09,427 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_74~0 65536))) (let ((.cse0 (* .cse1 65535))) (and (<= (+ (* 65536 (div (+ (- 4294901505) .cse0) 65536)) 4294901750) .cse0) (forall ((v_~var_1_37~0_17 Int)) (or (< (+ 4294901749 (* 65536 (div (+ (- 4294901505) (* (- 65535) v_~var_1_37~0_17) .cse0) 65536)) (* v_~var_1_37~0_17 65535)) .cse0) (< v_~var_1_37~0_17 0) (< .cse1 (+ v_~var_1_37~0_17 1)) (< c_~var_1_27~0 v_~var_1_37~0_17))) (let ((.cse2 (mod c_~var_1_46~0 256))) (or (< .cse2 11) (let ((.cse3 (+ .cse2 .cse0))) (and (<= .cse3 (+ (* 65536 (div (+ (- 4294901761) .cse0) 65536)) 4294967295)) (forall ((v_~var_1_37~0_17 Int)) (or (< 65535 v_~var_1_37~0_17) (< .cse3 (+ 65536 (* v_~var_1_37~0_17 65535) (* 65536 (div (+ (- 1) (* (- 65535) v_~var_1_37~0_17) .cse0) 65536)))) (< v_~var_1_37~0_17 .cse1) (< c_~var_1_27~0 v_~var_1_37~0_17))) (forall ((v_~var_1_37~0_17 Int)) (or (< .cse3 (+ (* v_~var_1_37~0_17 65535) (* 65536 (div (+ (* (- 65535) v_~var_1_37~0_17) (- 4294901761) .cse0) 65536)) 4294967296)) (< v_~var_1_37~0_17 0) (< .cse1 (+ v_~var_1_37~0_17 1)) (< c_~var_1_27~0 v_~var_1_37~0_17))))))) (forall ((v_~var_1_37~0_17 Int)) (or (< 65535 v_~var_1_37~0_17) (< (+ (* 65536 (div (+ 255 (* (- 65535) v_~var_1_37~0_17) .cse0) 65536)) (* v_~var_1_37~0_17 65535)) (+ 11 .cse0)) (< v_~var_1_37~0_17 .cse1) (< c_~var_1_27~0 v_~var_1_37~0_17)))))) is different from false [2023-12-15 19:48:10,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076669932] [2023-12-15 19:48:10,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679009534] [2023-12-15 19:48:10,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679009534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:48:10,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:48:10,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-15 19:48:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490013554] [2023-12-15 19:48:10,027 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:10,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 19:48:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 19:48:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=244, Unknown=1, NotChecked=32, Total=342 [2023-12-15 19:48:10,029 INFO L87 Difference]: Start difference. First operand 23423 states and 37586 transitions. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (82), 4 states have call predecessors, (82), 6 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2023-12-15 19:48:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:13,488 INFO L93 Difference]: Finished difference Result 43785 states and 69916 transitions. [2023-12-15 19:48:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-15 19:48:13,489 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (82), 4 states have call predecessors, (82), 6 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) Word has length 515 [2023-12-15 19:48:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:13,557 INFO L225 Difference]: With dead ends: 43785 [2023-12-15 19:48:13,557 INFO L226 Difference]: Without dead ends: 28963 [2023-12-15 19:48:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=384, Invalid=1259, Unknown=1, NotChecked=78, Total=1722 [2023-12-15 19:48:13,584 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1745 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:13,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 3764 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:48:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28963 states. [2023-12-15 19:48:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28963 to 26609. [2023-12-15 19:48:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26609 states, 18688 states have (on average 1.4678938356164384) internal successors, (27432), 18760 states have internal predecessors, (27432), 7404 states have call successors, (7404), 516 states have call predecessors, (7404), 516 states have return successors, (7404), 7332 states have call predecessors, (7404), 7404 states have call successors, (7404) [2023-12-15 19:48:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26609 states to 26609 states and 42240 transitions. [2023-12-15 19:48:15,355 INFO L78 Accepts]: Start accepts. Automaton has 26609 states and 42240 transitions. Word has length 515 [2023-12-15 19:48:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:15,356 INFO L495 AbstractCegarLoop]: Abstraction has 26609 states and 42240 transitions. [2023-12-15 19:48:15,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (82), 4 states have call predecessors, (82), 6 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2023-12-15 19:48:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 26609 states and 42240 transitions. [2023-12-15 19:48:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:48:15,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:15,366 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:15,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 19:48:15,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:15,574 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:15,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 346508357, now seen corresponding path program 1 times [2023-12-15 19:48:15,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:15,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476648047] [2023-12-15 19:48:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:15,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:15,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344678647] [2023-12-15 19:48:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:15,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:15,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:15,625 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:15,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:48:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:15,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:15,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4467 proven. 192 refuted. 0 times theorem prover too weak. 8625 trivial. 0 not checked. [2023-12-15 19:48:16,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 51 proven. 192 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:48:16,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476648047] [2023-12-15 19:48:16,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344678647] [2023-12-15 19:48:16,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344678647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:16,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:16,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:48:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828113459] [2023-12-15 19:48:16,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:48:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:48:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:16,729 INFO L87 Difference]: Start difference. First operand 26609 states and 42240 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-15 19:48:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:17,640 INFO L93 Difference]: Finished difference Result 36112 states and 56949 transitions. [2023-12-15 19:48:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:48:17,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 515 [2023-12-15 19:48:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:17,659 INFO L225 Difference]: With dead ends: 36112 [2023-12-15 19:48:17,660 INFO L226 Difference]: Without dead ends: 9504 [2023-12-15 19:48:17,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1022 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:48:17,698 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 187 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:17,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 683 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:48:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9504 states. [2023-12-15 19:48:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9504 to 9130. [2023-12-15 19:48:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9130 states, 6242 states have (on average 1.4325536686959308) internal successors, (8942), 6267 states have internal predecessors, (8942), 2650 states have call successors, (2650), 237 states have call predecessors, (2650), 237 states have return successors, (2650), 2625 states have call predecessors, (2650), 2650 states have call successors, (2650) [2023-12-15 19:48:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9130 states to 9130 states and 14242 transitions. [2023-12-15 19:48:18,239 INFO L78 Accepts]: Start accepts. Automaton has 9130 states and 14242 transitions. Word has length 515 [2023-12-15 19:48:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:18,239 INFO L495 AbstractCegarLoop]: Abstraction has 9130 states and 14242 transitions. [2023-12-15 19:48:18,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-15 19:48:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 9130 states and 14242 transitions. [2023-12-15 19:48:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:48:18,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:18,244 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:18,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:48:18,450 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 669960359, now seen corresponding path program 1 times [2023-12-15 19:48:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367633196] [2023-12-15 19:48:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:18,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236890403] [2023-12-15 19:48:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:18,558 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:18,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:48:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:18,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:18,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 5391 proven. 66 refuted. 0 times theorem prover too weak. 7827 trivial. 0 not checked. [2023-12-15 19:48:19,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 177 proven. 66 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:48:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367633196] [2023-12-15 19:48:19,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236890403] [2023-12-15 19:48:19,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236890403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:19,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 19:48:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622238870] [2023-12-15 19:48:19,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:19,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:48:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:48:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:48:19,398 INFO L87 Difference]: Start difference. First operand 9130 states and 14242 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 3 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) [2023-12-15 19:48:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:20,268 INFO L93 Difference]: Finished difference Result 18518 states and 28644 transitions. [2023-12-15 19:48:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:48:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 3 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) Word has length 515 [2023-12-15 19:48:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:20,292 INFO L225 Difference]: With dead ends: 18518 [2023-12-15 19:48:20,293 INFO L226 Difference]: Without dead ends: 9556 [2023-12-15 19:48:20,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1022 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:48:20,311 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 374 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:20,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 688 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:48:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9556 states. [2023-12-15 19:48:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9556 to 9230. [2023-12-15 19:48:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 6317 states have (on average 1.423618806395441) internal successors, (8993), 6342 states have internal predecessors, (8993), 2650 states have call successors, (2650), 262 states have call predecessors, (2650), 262 states have return successors, (2650), 2625 states have call predecessors, (2650), 2650 states have call successors, (2650) [2023-12-15 19:48:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 14293 transitions. [2023-12-15 19:48:21,071 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 14293 transitions. Word has length 515 [2023-12-15 19:48:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:21,072 INFO L495 AbstractCegarLoop]: Abstraction has 9230 states and 14293 transitions. [2023-12-15 19:48:21,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 3 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) [2023-12-15 19:48:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 14293 transitions. [2023-12-15 19:48:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 19:48:21,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:21,102 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:21,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:21,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:48:21,308 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:21,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash -351107995, now seen corresponding path program 1 times [2023-12-15 19:48:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:21,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502298515] [2023-12-15 19:48:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:21,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:21,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:21,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003881694] [2023-12-15 19:48:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:21,362 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:21,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 19:48:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:21,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:21,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:48:21,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502298515] [2023-12-15 19:48:21,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003881694] [2023-12-15 19:48:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003881694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:21,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:48:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50170170] [2023-12-15 19:48:21,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:48:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:48:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:48:21,893 INFO L87 Difference]: Start difference. First operand 9230 states and 14293 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:48:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:23,032 INFO L93 Difference]: Finished difference Result 14978 states and 23316 transitions. [2023-12-15 19:48:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:48:23,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 515 [2023-12-15 19:48:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:23,072 INFO L225 Difference]: With dead ends: 14978 [2023-12-15 19:48:23,072 INFO L226 Difference]: Without dead ends: 12700 [2023-12-15 19:48:23,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:48:23,083 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 576 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:23,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1477 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:48:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12700 states. [2023-12-15 19:48:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12700 to 10706. [2023-12-15 19:48:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10706 states, 7361 states have (on average 1.425757369922565) internal successors, (10495), 7398 states have internal predecessors, (10495), 3046 states have call successors, (3046), 298 states have call predecessors, (3046), 298 states have return successors, (3046), 3009 states have call predecessors, (3046), 3046 states have call successors, (3046) [2023-12-15 19:48:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 16587 transitions. [2023-12-15 19:48:24,063 INFO L78 Accepts]: Start accepts. Automaton has 10706 states and 16587 transitions. Word has length 515 [2023-12-15 19:48:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:24,064 INFO L495 AbstractCegarLoop]: Abstraction has 10706 states and 16587 transitions. [2023-12-15 19:48:24,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:48:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 10706 states and 16587 transitions. [2023-12-15 19:48:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:48:24,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:24,069 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:24,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 19:48:24,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 19:48:24,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:24,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash -458357339, now seen corresponding path program 1 times [2023-12-15 19:48:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133347615] [2023-12-15 19:48:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:24,319 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:24,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513092897] [2023-12-15 19:48:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:24,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:24,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:24,320 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:24,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 19:48:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:24,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 19:48:24,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 7688 proven. 366 refuted. 0 times theorem prover too weak. 5230 trivial. 0 not checked. [2023-12-15 19:48:27,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 225 proven. 258 refuted. 0 times theorem prover too weak. 12801 trivial. 0 not checked. [2023-12-15 19:48:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133347615] [2023-12-15 19:48:30,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513092897] [2023-12-15 19:48:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513092897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:30,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:30,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-15 19:48:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104548152] [2023-12-15 19:48:30,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-15 19:48:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-15 19:48:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 19:48:30,398 INFO L87 Difference]: Start difference. First operand 10706 states and 16587 transitions. Second operand has 36 states, 35 states have (on average 5.942857142857143) internal successors, (208), 36 states have internal predecessors, (208), 10 states have call successors, (164), 6 states have call predecessors, (164), 11 states have return successors, (164), 10 states have call predecessors, (164), 10 states have call successors, (164) Received shutdown request... [2023-12-15 19:48:34,821 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:48:34,825 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:48:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 19:48:34,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1001 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1663, Invalid=4499, Unknown=0, NotChecked=0, Total=6162 [2023-12-15 19:48:34,854 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 2406 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:34,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 1122 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 19:48:34,855 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:48:34,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-15 19:48:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 19:48:35,063 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (10706states) and FLOYD_HOARE automaton (currently 45 states, 36 states before enhancement),while ReachableStatesComputation was computing reachable states (1284 states constructed, input type IntersectNwa). [2023-12-15 19:48:35,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:35,068 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:48:35,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:48:35 BoogieIcfgContainer [2023-12-15 19:48:35,069 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:48:35,069 INFO L158 Benchmark]: Toolchain (without parser) took 60580.31ms. Allocated memory was 235.9MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 187.7MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 19:48:35,069 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:48:35,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.22ms. Allocated memory is still 235.9MB. Free memory was 187.1MB in the beginning and 163.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 19:48:35,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.99ms. Allocated memory is still 235.9MB. Free memory was 163.5MB in the beginning and 156.2MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 19:48:35,070 INFO L158 Benchmark]: Boogie Preprocessor took 101.81ms. Allocated memory is still 235.9MB. Free memory was 156.2MB in the beginning and 148.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 19:48:35,070 INFO L158 Benchmark]: RCFGBuilder took 833.29ms. Allocated memory is still 235.9MB. Free memory was 148.3MB in the beginning and 161.8MB in the end (delta: -13.5MB). Peak memory consumption was 35.8MB. Max. memory is 8.0GB. [2023-12-15 19:48:35,070 INFO L158 Benchmark]: TraceAbstraction took 59166.70ms. Allocated memory was 235.9MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 161.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 19:48:35,071 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 387.22ms. Allocated memory is still 235.9MB. Free memory was 187.1MB in the beginning and 163.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 86.99ms. Allocated memory is still 235.9MB. Free memory was 163.5MB in the beginning and 156.2MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 101.81ms. Allocated memory is still 235.9MB. Free memory was 156.2MB in the beginning and 148.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 833.29ms. Allocated memory is still 235.9MB. Free memory was 148.3MB in the beginning and 161.8MB in the end (delta: -13.5MB). Peak memory consumption was 35.8MB. Max. memory is 8.0GB. * TraceAbstraction took 59166.70ms. Allocated memory was 235.9MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 161.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (10706states) and FLOYD_HOARE automaton (currently 45 states, 36 states before enhancement),while ReachableStatesComputation was computing reachable states (1284 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.1s, OverallIterations: 18, TraceHistogramMax: 82, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10097 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9850 mSDsluCounter, 21447 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13398 mSDsCounter, 2770 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7025 IncrementalHoareTripleChecker+Invalid, 9795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2770 mSolverCounterUnsat, 8049 mSDtfsCounter, 7025 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11965 GetRequests, 11785 SyntacticMatches, 3 SemanticMatches, 177 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26609occurred in iteration=14, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 8463 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 9776 NumberOfCodeBlocks, 9776 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 11815 ConstructedInterpolants, 0 QuantifiedInterpolants, 45448 SizeOfPredicates, 50 NumberOfNonLiveVariables, 20686 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 303987/305532 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