/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-0.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:43:15,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:43:16,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:43:16,020 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:43:16,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:43:16,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:43:16,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:43:16,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:43:16,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:43:16,050 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:43:16,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:43:16,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:43:16,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:43:16,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:43:16,052 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:43:16,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:43:16,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:43:16,052 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:43:16,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:43:16,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:43:16,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:43:16,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:43:16,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:43:16,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:43:16,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:43:16,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:43:16,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:43:16,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:43:16,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:43:16,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:43:16,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:43:16,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:43:16,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:43:16,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:43:16,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:43:16,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:43:16,058 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:43:16,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:43:16,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:43:16,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:43:16,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:43:16,288 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:43:16,289 INFO L431 ainManager$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-0.i [2023-12-19 06:43:17,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:43:17,642 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:43:17,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-0.i [2023-12-19 06:43:17,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a766ef95c/e295a8df68ac40048fe9be0b43180506/FLAG202ac7af5 [2023-12-19 06:43:17,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a766ef95c/e295a8df68ac40048fe9be0b43180506 [2023-12-19 06:43:17,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:43:17,671 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:43:17,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:43:17,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:43:17,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:43:17,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:43:17" (1/1) ... [2023-12-19 06:43:17,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c44b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:17, skipping insertion in model container [2023-12-19 06:43:17,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:43:17" (1/1) ... [2023-12-19 06:43:17,732 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:43:17,851 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-0.i[915,928] [2023-12-19 06:43:17,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:43:17,959 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:43:17,973 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-0.i[915,928] [2023-12-19 06:43:18,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:43:18,051 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:43:18,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18 WrapperNode [2023-12-19 06:43:18,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:43:18,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:43:18,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:43:18,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:43:18,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,125 INFO L138 Inliner]: procedures = 26, calls = 85, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 484 [2023-12-19 06:43:18,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:43:18,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:43:18,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:43:18,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:43:18,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,187 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:43:18,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:43:18,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:43:18,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:43:18,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:43:18,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (1/1) ... [2023-12-19 06:43:18,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:43:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:18,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 06:43:18,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 06:43:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:43:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:43:18,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:43:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:43:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:43:18,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:43:18,566 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:43:18,567 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:43:19,272 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:43:19,321 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:43:19,321 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:43:19,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:43:19 BoogieIcfgContainer [2023-12-19 06:43:19,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:43:19,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:43:19,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:43:19,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:43:19,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:43:17" (1/3) ... [2023-12-19 06:43:19,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e47d7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:43:19, skipping insertion in model container [2023-12-19 06:43:19,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:43:18" (2/3) ... [2023-12-19 06:43:19,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e47d7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:43:19, skipping insertion in model container [2023-12-19 06:43:19,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:43:19" (3/3) ... [2023-12-19 06:43:19,328 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-0.i [2023-12-19 06:43:19,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:43:19,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:43:19,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:43:19,398 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;@1d9e0243, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:43:19,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:43:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 119 states have (on average 1.5630252100840336) internal successors, (186), 120 states have internal predecessors, (186), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-19 06:43:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:19,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:19,451 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:19,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:19,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 85619779, now seen corresponding path program 1 times [2023-12-19 06:43:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767649713] [2023-12-19 06:43:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:19,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:19,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724831784] [2023-12-19 06:43:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:19,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:19,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:19,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:43:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:20,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:43:20,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:21,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767649713] [2023-12-19 06:43:21,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724831784] [2023-12-19 06:43:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724831784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:21,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:21,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:43:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885927809] [2023-12-19 06:43:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:43:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:43:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:43:21,219 INFO L87 Difference]: Start difference. First operand has 194 states, 119 states have (on average 1.5630252100840336) internal successors, (186), 120 states have internal predecessors, (186), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:21,605 INFO L93 Difference]: Finished difference Result 578 states and 1135 transitions. [2023-12-19 06:43:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:43:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 453 [2023-12-19 06:43:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:21,627 INFO L225 Difference]: With dead ends: 578 [2023-12-19 06:43:21,627 INFO L226 Difference]: Without dead ends: 385 [2023-12-19 06:43:21,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:43:21,639 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 266 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:21,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1122 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:43:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-19 06:43:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2023-12-19 06:43:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 221 states have (on average 1.5339366515837105) internal successors, (339), 221 states have internal predecessors, (339), 144 states have call successors, (144), 2 states have call predecessors, (144), 2 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 06:43:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 627 transitions. [2023-12-19 06:43:21,770 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 627 transitions. Word has length 453 [2023-12-19 06:43:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:21,771 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 627 transitions. [2023-12-19 06:43:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 627 transitions. [2023-12-19 06:43:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:21,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:21,778 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:21,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:21,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:43:21,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:21,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash 343785217, now seen corresponding path program 1 times [2023-12-19 06:43:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101880156] [2023-12-19 06:43:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:22,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:22,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019156686] [2023-12-19 06:43:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:22,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:22,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:22,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:43:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:22,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:43:22,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:22,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:22,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101880156] [2023-12-19 06:43:22,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019156686] [2023-12-19 06:43:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019156686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:22,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:22,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:43:22,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511589998] [2023-12-19 06:43:22,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:43:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:43:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:22,478 INFO L87 Difference]: Start difference. First operand 368 states and 627 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:22,539 INFO L93 Difference]: Finished difference Result 752 states and 1271 transitions. [2023-12-19 06:43:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:43:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 453 [2023-12-19 06:43:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:22,546 INFO L225 Difference]: With dead ends: 752 [2023-12-19 06:43:22,547 INFO L226 Difference]: Without dead ends: 550 [2023-12-19 06:43:22,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:22,551 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 248 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:22,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 827 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:43:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-19 06:43:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 400. [2023-12-19 06:43:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 253 states have internal predecessors, (399), 144 states have call successors, (144), 2 states have call predecessors, (144), 2 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 06:43:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 687 transitions. [2023-12-19 06:43:22,616 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 687 transitions. Word has length 453 [2023-12-19 06:43:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:22,619 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 687 transitions. [2023-12-19 06:43:22,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 687 transitions. [2023-12-19 06:43:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:22,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:22,625 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:22,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:43:22,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:22,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1045385091, now seen corresponding path program 1 times [2023-12-19 06:43:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:22,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008997593] [2023-12-19 06:43:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:22,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:22,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:22,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299535758] [2023-12-19 06:43:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:22,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:22,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:43:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:23,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:43:23,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:23,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:23,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008997593] [2023-12-19 06:43:23,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299535758] [2023-12-19 06:43:23,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299535758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:23,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:23,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:43:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290801500] [2023-12-19 06:43:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:23,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:43:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:43:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:23,234 INFO L87 Difference]: Start difference. First operand 400 states and 687 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:23,272 INFO L93 Difference]: Finished difference Result 769 states and 1298 transitions. [2023-12-19 06:43:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:43:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 453 [2023-12-19 06:43:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:23,276 INFO L225 Difference]: With dead ends: 769 [2023-12-19 06:43:23,276 INFO L226 Difference]: Without dead ends: 550 [2023-12-19 06:43:23,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:23,278 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 244 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:23,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 657 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:43:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-19 06:43:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 400. [2023-12-19 06:43:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 253 states have (on average 1.5612648221343874) internal successors, (395), 253 states have internal predecessors, (395), 144 states have call successors, (144), 2 states have call predecessors, (144), 2 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 06:43:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 683 transitions. [2023-12-19 06:43:23,306 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 683 transitions. Word has length 453 [2023-12-19 06:43:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:23,307 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 683 transitions. [2023-12-19 06:43:23,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 683 transitions. [2023-12-19 06:43:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:23,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:23,312 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:23,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:23,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:23,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:23,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash 227736641, now seen corresponding path program 1 times [2023-12-19 06:43:23,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133028015] [2023-12-19 06:43:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:23,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:23,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310959781] [2023-12-19 06:43:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:23,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:23,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:23,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:23,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:43:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:23,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:43:23,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:23,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133028015] [2023-12-19 06:43:23,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310959781] [2023-12-19 06:43:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310959781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:43:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480620925] [2023-12-19 06:43:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:43:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:43:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:23,868 INFO L87 Difference]: Start difference. First operand 400 states and 683 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:23,900 INFO L93 Difference]: Finished difference Result 811 states and 1384 transitions. [2023-12-19 06:43:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:43:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 453 [2023-12-19 06:43:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:23,904 INFO L225 Difference]: With dead ends: 811 [2023-12-19 06:43:23,904 INFO L226 Difference]: Without dead ends: 597 [2023-12-19 06:43:23,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:23,905 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 194 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:23,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 757 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:43:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-19 06:43:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 594. [2023-12-19 06:43:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 400 states have (on average 1.595) internal successors, (638), 401 states have internal predecessors, (638), 190 states have call successors, (190), 3 states have call predecessors, (190), 3 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-19 06:43:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1018 transitions. [2023-12-19 06:43:23,939 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1018 transitions. Word has length 453 [2023-12-19 06:43:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:23,940 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 1018 transitions. [2023-12-19 06:43:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1018 transitions. [2023-12-19 06:43:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:23,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:23,945 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:23,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:24,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:24,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:24,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1916680383, now seen corresponding path program 1 times [2023-12-19 06:43:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:24,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948712802] [2023-12-19 06:43:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:24,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063859348] [2023-12-19 06:43:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:24,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:24,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:24,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:24,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:43:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:24,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:43:24,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4061 proven. 156 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2023-12-19 06:43:24,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:43:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 57 proven. 156 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-19 06:43:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948712802] [2023-12-19 06:43:24,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063859348] [2023-12-19 06:43:24,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063859348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:43:24,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:43:24,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:43:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574482853] [2023-12-19 06:43:24,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:43:24,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:43:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:43:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:43:24,989 INFO L87 Difference]: Start difference. First operand 594 states and 1018 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-19 06:43:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:25,395 INFO L93 Difference]: Finished difference Result 1058 states and 1796 transitions. [2023-12-19 06:43:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:43:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 453 [2023-12-19 06:43:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:25,414 INFO L225 Difference]: With dead ends: 1058 [2023-12-19 06:43:25,414 INFO L226 Difference]: Without dead ends: 618 [2023-12-19 06:43:25,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 898 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:43:25,416 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 282 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:25,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 587 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:43:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-19 06:43:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 606. [2023-12-19 06:43:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 409 states have (on average 1.5721271393643033) internal successors, (643), 410 states have internal predecessors, (643), 190 states have call successors, (190), 6 states have call predecessors, (190), 6 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-19 06:43:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1023 transitions. [2023-12-19 06:43:25,500 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1023 transitions. Word has length 453 [2023-12-19 06:43:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:25,500 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 1023 transitions. [2023-12-19 06:43:25,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-19 06:43:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1023 transitions. [2023-12-19 06:43:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:25,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:25,503 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:25,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 06:43:25,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:25,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:25,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1844293825, now seen corresponding path program 1 times [2023-12-19 06:43:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:25,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609302190] [2023-12-19 06:43:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:25,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256000118] [2023-12-19 06:43:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:25,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:25,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:25,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:43:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:26,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:43:26,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3291 proven. 171 refuted. 0 times theorem prover too weak. 6762 trivial. 0 not checked. [2023-12-19 06:43:26,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:43:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 42 proven. 171 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-19 06:43:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609302190] [2023-12-19 06:43:26,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256000118] [2023-12-19 06:43:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256000118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:43:26,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:43:26,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 06:43:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904993587] [2023-12-19 06:43:26,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:43:26,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 06:43:26,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 06:43:26,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:43:26,707 INFO L87 Difference]: Start difference. First operand 606 states and 1023 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-12-19 06:43:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:27,733 INFO L93 Difference]: Finished difference Result 1402 states and 2316 transitions. [2023-12-19 06:43:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 06:43:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 453 [2023-12-19 06:43:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:27,738 INFO L225 Difference]: With dead ends: 1402 [2023-12-19 06:43:27,738 INFO L226 Difference]: Without dead ends: 998 [2023-12-19 06:43:27,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 897 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:43:27,741 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 864 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:27,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1173 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:43:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-12-19 06:43:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 706. [2023-12-19 06:43:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 506 states have (on average 1.6205533596837944) internal successors, (820), 507 states have internal predecessors, (820), 190 states have call successors, (190), 9 states have call predecessors, (190), 9 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-19 06:43:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1200 transitions. [2023-12-19 06:43:27,794 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1200 transitions. Word has length 453 [2023-12-19 06:43:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:27,794 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1200 transitions. [2023-12-19 06:43:27,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-12-19 06:43:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1200 transitions. [2023-12-19 06:43:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:27,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:27,797 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:27,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 06:43:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:28,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:28,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1363213567, now seen corresponding path program 1 times [2023-12-19 06:43:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:28,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906409945] [2023-12-19 06:43:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:28,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:28,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147546865] [2023-12-19 06:43:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:28,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:28,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:28,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:28,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:43:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:28,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:43:28,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:28,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906409945] [2023-12-19 06:43:28,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147546865] [2023-12-19 06:43:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147546865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:28,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:28,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:43:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167523630] [2023-12-19 06:43:28,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:43:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:43:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:43:28,833 INFO L87 Difference]: Start difference. First operand 706 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:29,119 INFO L93 Difference]: Finished difference Result 2118 states and 3579 transitions. [2023-12-19 06:43:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:43:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 453 [2023-12-19 06:43:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:29,127 INFO L225 Difference]: With dead ends: 2118 [2023-12-19 06:43:29,127 INFO L226 Difference]: Without dead ends: 1596 [2023-12-19 06:43:29,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:43:29,129 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 424 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:29,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1186 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:43:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-19 06:43:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1256. [2023-12-19 06:43:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 932 states have (on average 1.6266094420600858) internal successors, (1516), 934 states have internal predecessors, (1516), 308 states have call successors, (308), 15 states have call predecessors, (308), 15 states have return successors, (308), 306 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 06:43:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2132 transitions. [2023-12-19 06:43:29,257 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2132 transitions. Word has length 453 [2023-12-19 06:43:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:29,258 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 2132 transitions. [2023-12-19 06:43:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2132 transitions. [2023-12-19 06:43:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 06:43:29,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:29,261 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:29,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:29,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:29,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -882365887, now seen corresponding path program 1 times [2023-12-19 06:43:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:29,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075536515] [2023-12-19 06:43:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:29,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:29,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644783238] [2023-12-19 06:43:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:29,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:29,541 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:29,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:43:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:29,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 06:43:29,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3777 proven. 162 refuted. 0 times theorem prover too weak. 6285 trivial. 0 not checked. [2023-12-19 06:43:30,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:43:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 51 proven. 162 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-19 06:43:30,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:30,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075536515] [2023-12-19 06:43:30,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:30,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644783238] [2023-12-19 06:43:30,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644783238] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:43:30,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:43:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-19 06:43:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783129885] [2023-12-19 06:43:30,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:43:30,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:43:30,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:43:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-19 06:43:30,731 INFO L87 Difference]: Start difference. First operand 1256 states and 2132 transitions. Second operand has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-19 06:43:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:31,835 INFO L93 Difference]: Finished difference Result 2564 states and 4188 transitions. [2023-12-19 06:43:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 06:43:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 453 [2023-12-19 06:43:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:31,844 INFO L225 Difference]: With dead ends: 2564 [2023-12-19 06:43:31,844 INFO L226 Difference]: Without dead ends: 2042 [2023-12-19 06:43:31,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=299, Invalid=631, Unknown=0, NotChecked=0, Total=930 [2023-12-19 06:43:31,847 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1007 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:31,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1100 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:43:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2023-12-19 06:43:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1063. [2023-12-19 06:43:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 731 states have (on average 1.5143638850889194) internal successors, (1107), 734 states have internal predecessors, (1107), 308 states have call successors, (308), 23 states have call predecessors, (308), 23 states have return successors, (308), 305 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 06:43:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1723 transitions. [2023-12-19 06:43:31,987 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1723 transitions. Word has length 453 [2023-12-19 06:43:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:31,987 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1723 transitions. [2023-12-19 06:43:31,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-19 06:43:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1723 transitions. [2023-12-19 06:43:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-19 06:43:31,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:31,991 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:32,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:43:32,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:32,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1237535950, now seen corresponding path program 1 times [2023-12-19 06:43:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:32,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776832321] [2023-12-19 06:43:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:32,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:32,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531599199] [2023-12-19 06:43:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:32,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:32,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:32,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:32,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:43:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:32,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:43:32,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4302 proven. 459 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2023-12-19 06:43:34,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:43:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 162 proven. 468 refuted. 0 times theorem prover too weak. 9594 trivial. 0 not checked. [2023-12-19 06:43:35,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776832321] [2023-12-19 06:43:35,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531599199] [2023-12-19 06:43:35,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531599199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:43:35,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:43:35,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-19 06:43:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815133634] [2023-12-19 06:43:35,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:43:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 06:43:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 06:43:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:43:35,489 INFO L87 Difference]: Start difference. First operand 1063 states and 1723 transitions. Second operand has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 8 states have call successors, (144), 5 states have call predecessors, (144), 11 states have return successors, (144), 8 states have call predecessors, (144), 8 states have call successors, (144) [2023-12-19 06:43:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:36,464 INFO L93 Difference]: Finished difference Result 2048 states and 3286 transitions. [2023-12-19 06:43:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 06:43:36,465 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 8 states have call successors, (144), 5 states have call predecessors, (144), 11 states have return successors, (144), 8 states have call predecessors, (144), 8 states have call successors, (144) Word has length 454 [2023-12-19 06:43:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:36,471 INFO L225 Difference]: With dead ends: 2048 [2023-12-19 06:43:36,471 INFO L226 Difference]: Without dead ends: 1129 [2023-12-19 06:43:36,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=517, Invalid=1205, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 06:43:36,477 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 608 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:36,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1341 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:43:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-12-19 06:43:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1083. [2023-12-19 06:43:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 746 states have (on average 1.4986595174262736) internal successors, (1118), 749 states have internal predecessors, (1118), 308 states have call successors, (308), 28 states have call predecessors, (308), 28 states have return successors, (308), 305 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 06:43:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1734 transitions. [2023-12-19 06:43:36,593 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1734 transitions. Word has length 454 [2023-12-19 06:43:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:36,597 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1734 transitions. [2023-12-19 06:43:36,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 8 states have call successors, (144), 5 states have call predecessors, (144), 11 states have return successors, (144), 8 states have call predecessors, (144), 8 states have call successors, (144) [2023-12-19 06:43:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1734 transitions. [2023-12-19 06:43:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-19 06:43:36,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:36,601 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:36,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:36,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:36,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:36,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:36,810 INFO L85 PathProgramCache]: Analyzing trace with hash 701626096, now seen corresponding path program 1 times [2023-12-19 06:43:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849237799] [2023-12-19 06:43:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:36,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:36,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223244673] [2023-12-19 06:43:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:36,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:36,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:36,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:36,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:43:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:37,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:43:37,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3786 proven. 330 refuted. 0 times theorem prover too weak. 6108 trivial. 0 not checked. [2023-12-19 06:43:37,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:43:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 90 proven. 333 refuted. 0 times theorem prover too weak. 9801 trivial. 0 not checked. [2023-12-19 06:43:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849237799] [2023-12-19 06:43:38,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223244673] [2023-12-19 06:43:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223244673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:43:38,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:43:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-19 06:43:38,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192351629] [2023-12-19 06:43:38,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:43:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:43:38,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:43:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:43:38,227 INFO L87 Difference]: Start difference. First operand 1083 states and 1734 transitions. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 3 states have call successors, (129), 3 states have call predecessors, (129), 7 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2023-12-19 06:43:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:39,563 INFO L93 Difference]: Finished difference Result 1865 states and 2908 transitions. [2023-12-19 06:43:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-19 06:43:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 3 states have call successors, (129), 3 states have call predecessors, (129), 7 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) Word has length 454 [2023-12-19 06:43:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:39,569 INFO L225 Difference]: With dead ends: 1865 [2023-12-19 06:43:39,569 INFO L226 Difference]: Without dead ends: 1090 [2023-12-19 06:43:39,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 896 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 06:43:39,572 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 754 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:39,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1735 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 06:43:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-12-19 06:43:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1039. [2023-12-19 06:43:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 697 states have (on average 1.4533715925394548) internal successors, (1013), 700 states have internal predecessors, (1013), 308 states have call successors, (308), 33 states have call predecessors, (308), 33 states have return successors, (308), 305 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 06:43:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1629 transitions. [2023-12-19 06:43:39,656 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1629 transitions. Word has length 454 [2023-12-19 06:43:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:39,657 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1629 transitions. [2023-12-19 06:43:39,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 3 states have call successors, (129), 3 states have call predecessors, (129), 7 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2023-12-19 06:43:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1629 transitions. [2023-12-19 06:43:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 06:43:39,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:39,660 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:39,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:43:39,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:39,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1512700016, now seen corresponding path program 1 times [2023-12-19 06:43:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310937515] [2023-12-19 06:43:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:39,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735053453] [2023-12-19 06:43:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:39,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:39,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:39,933 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:39,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:43:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:40,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:43:40,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:40,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310937515] [2023-12-19 06:43:40,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735053453] [2023-12-19 06:43:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735053453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:43:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25858233] [2023-12-19 06:43:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:43:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:43:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:40,651 INFO L87 Difference]: Start difference. First operand 1039 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:40,729 INFO L93 Difference]: Finished difference Result 1912 states and 3005 transitions. [2023-12-19 06:43:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:43:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 455 [2023-12-19 06:43:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:40,735 INFO L225 Difference]: With dead ends: 1912 [2023-12-19 06:43:40,735 INFO L226 Difference]: Without dead ends: 1039 [2023-12-19 06:43:40,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:43:40,738 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:40,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 305 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:43:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-12-19 06:43:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2023-12-19 06:43:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 697 states have (on average 1.447632711621234) internal successors, (1009), 700 states have internal predecessors, (1009), 308 states have call successors, (308), 33 states have call predecessors, (308), 33 states have return successors, (308), 305 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 06:43:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1625 transitions. [2023-12-19 06:43:40,817 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1625 transitions. Word has length 455 [2023-12-19 06:43:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:40,817 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1625 transitions. [2023-12-19 06:43:40,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1625 transitions. [2023-12-19 06:43:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 06:43:40,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:40,820 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:40,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:41,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:43:41,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1139923455, now seen corresponding path program 1 times [2023-12-19 06:43:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052609670] [2023-12-19 06:43:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:41,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:41,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186322287] [2023-12-19 06:43:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:41,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:41,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:43:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:41,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:43:41,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-19 06:43:42,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:43:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052609670] [2023-12-19 06:43:42,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186322287] [2023-12-19 06:43:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186322287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:43:42,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:43:42,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:43:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553804291] [2023-12-19 06:43:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:43:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:43:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:43:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:43:42,241 INFO L87 Difference]: Start difference. First operand 1039 states and 1625 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:42,533 INFO L93 Difference]: Finished difference Result 2519 states and 3890 transitions. [2023-12-19 06:43:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:43:42,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 456 [2023-12-19 06:43:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:42,541 INFO L225 Difference]: With dead ends: 2519 [2023-12-19 06:43:42,542 INFO L226 Difference]: Without dead ends: 1796 [2023-12-19 06:43:42,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:43:42,545 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 261 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:42,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 935 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:43:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-12-19 06:43:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1748. [2023-12-19 06:43:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1144 states have (on average 1.416083916083916) internal successors, (1620), 1150 states have internal predecessors, (1620), 544 states have call successors, (544), 59 states have call predecessors, (544), 59 states have return successors, (544), 538 states have call predecessors, (544), 544 states have call successors, (544) [2023-12-19 06:43:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2708 transitions. [2023-12-19 06:43:42,785 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2708 transitions. Word has length 456 [2023-12-19 06:43:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:42,785 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2708 transitions. [2023-12-19 06:43:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-19 06:43:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2708 transitions. [2023-12-19 06:43:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 06:43:42,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:42,799 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:42,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 06:43:43,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 06:43:43,010 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:43,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1875180163, now seen corresponding path program 1 times [2023-12-19 06:43:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:43,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711573441] [2023-12-19 06:43:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:43,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:43,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:43,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814432850] [2023-12-19 06:43:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:43,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:43,092 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:43,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:43:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:43,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 06:43:43,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:43:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 6282 proven. 249 refuted. 0 times theorem prover too weak. 3693 trivial. 0 not checked. [2023-12-19 06:43:50,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:43:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 372 proven. 258 refuted. 0 times theorem prover too weak. 9594 trivial. 0 not checked. [2023-12-19 06:43:56,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:43:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711573441] [2023-12-19 06:43:56,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:43:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814432850] [2023-12-19 06:43:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814432850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:43:56,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:43:56,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-19 06:43:56,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60768715] [2023-12-19 06:43:56,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:43:56,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 06:43:56,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:43:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 06:43:56,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2023-12-19 06:43:56,069 INFO L87 Difference]: Start difference. First operand 1748 states and 2708 transitions. Second operand has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 28 states have internal predecessors, (173), 7 states have call successors, (106), 4 states have call predecessors, (106), 10 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) [2023-12-19 06:44:11,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:44:15,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:44:21,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:44:31,408 WARN L293 SmtUtils]: Spent 8.52s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:44:52,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:05,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:09,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:14,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:27,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:32,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:38,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:47,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:48,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:45:59,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:46:00,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:46:31,781 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 223 DAG size of output: 168 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:46:37,700 WARN L293 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 226 DAG size of output: 171 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:46:44,088 WARN L293 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 228 DAG size of output: 173 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:46:54,347 WARN L293 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 208 DAG size of output: 160 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:47:05,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:47:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:47:06,661 INFO L93 Difference]: Finished difference Result 15948 states and 22989 transitions. [2023-12-19 06:47:06,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-12-19 06:47:06,662 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 28 states have internal predecessors, (173), 7 states have call successors, (106), 4 states have call predecessors, (106), 10 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) Word has length 456 [2023-12-19 06:47:06,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:47:06,760 INFO L225 Difference]: With dead ends: 15948 [2023-12-19 06:47:06,760 INFO L226 Difference]: Without dead ends: 14452 [2023-12-19 06:47:06,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10433 ImplicationChecksByTransitivity, 102.4s TimeCoverageRelationStatistics Valid=5478, Invalid=20603, Unknown=1, NotChecked=0, Total=26082 [2023-12-19 06:47:06,791 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 3948 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 2932 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3984 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 6176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2932 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:47:06,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3984 Valid, 2644 Invalid, 6176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2932 Valid, 3237 Invalid, 7 Unknown, 0 Unchecked, 86.1s Time] [2023-12-19 06:47:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14452 states. [2023-12-19 06:47:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14452 to 3364. [2023-12-19 06:47:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2419 states have (on average 1.4505994212484499) internal successors, (3509), 2433 states have internal predecessors, (3509), 800 states have call successors, (800), 144 states have call predecessors, (800), 144 states have return successors, (800), 786 states have call predecessors, (800), 800 states have call successors, (800) [2023-12-19 06:47:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 5109 transitions. [2023-12-19 06:47:07,784 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 5109 transitions. Word has length 456 [2023-12-19 06:47:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:47:07,785 INFO L495 AbstractCegarLoop]: Abstraction has 3364 states and 5109 transitions. [2023-12-19 06:47:07,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 28 states have internal predecessors, (173), 7 states have call successors, (106), 4 states have call predecessors, (106), 10 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) [2023-12-19 06:47:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 5109 transitions. [2023-12-19 06:47:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 06:47:07,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:47:07,788 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:47:07,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:47:07,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 06:47:07,996 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:47:07,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:47:07,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1480813377, now seen corresponding path program 1 times [2023-12-19 06:47:07,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:47:07,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533010336] [2023-12-19 06:47:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:07,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:47:08,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:47:08,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51023562] [2023-12-19 06:47:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:08,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:47:08,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:47:08,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:47:08,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:47:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:47:08,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 06:47:08,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:47:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 6420 proven. 237 refuted. 0 times theorem prover too weak. 3567 trivial. 0 not checked. [2023-12-19 06:47:18,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:47:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 261 proven. 162 refuted. 0 times theorem prover too weak. 9801 trivial. 0 not checked. [2023-12-19 06:47:22,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:47:22,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533010336] [2023-12-19 06:47:22,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:47:22,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51023562] [2023-12-19 06:47:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51023562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:47:22,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:47:22,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2023-12-19 06:47:22,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117426266] [2023-12-19 06:47:22,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:47:22,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 06:47:22,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:47:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 06:47:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 06:47:22,636 INFO L87 Difference]: Start difference. First operand 3364 states and 5109 transitions. Second operand has 34 states, 33 states have (on average 5.575757575757576) internal successors, (184), 34 states have internal predecessors, (184), 8 states have call successors, (106), 5 states have call predecessors, (106), 10 states have return successors, (107), 8 states have call predecessors, (107), 8 states have call successors, (107) [2023-12-19 06:47:40,462 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 214 DAG size of output: 206 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:50:00,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 06:50:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:11,436 INFO L93 Difference]: Finished difference Result 57592 states and 82978 transitions. [2023-12-19 06:50:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2023-12-19 06:50:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.575757575757576) internal successors, (184), 34 states have internal predecessors, (184), 8 states have call successors, (106), 5 states have call predecessors, (106), 10 states have return successors, (107), 8 states have call predecessors, (107), 8 states have call successors, (107) Word has length 456 [2023-12-19 06:50:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:11,613 INFO L225 Difference]: With dead ends: 57592 [2023-12-19 06:50:11,614 INFO L226 Difference]: Without dead ends: 54422 [2023-12-19 06:50:11,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24354 ImplicationChecksByTransitivity, 86.5s TimeCoverageRelationStatistics Valid=14251, Invalid=47005, Unknown=0, NotChecked=0, Total=61256 [2023-12-19 06:50:11,654 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 12053 mSDsluCounter, 5520 mSDsCounter, 0 mSdLazyCounter, 8544 mSolverCounterSat, 7624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12123 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 16168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7624 IncrementalHoareTripleChecker+Valid, 8544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:11,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12123 Valid, 6269 Invalid, 16168 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7624 Valid, 8544 Invalid, 0 Unknown, 0 Unchecked, 60.2s Time] [2023-12-19 06:50:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54422 states. [2023-12-19 06:50:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54422 to 6514. [2023-12-19 06:50:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6514 states, 5209 states have (on average 1.5490497216356307) internal successors, (8069), 5235 states have internal predecessors, (8069), 1088 states have call successors, (1088), 216 states have call predecessors, (1088), 216 states have return successors, (1088), 1062 states have call predecessors, (1088), 1088 states have call successors, (1088) [2023-12-19 06:50:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6514 states to 6514 states and 10245 transitions. [2023-12-19 06:50:14,844 INFO L78 Accepts]: Start accepts. Automaton has 6514 states and 10245 transitions. Word has length 456 [2023-12-19 06:50:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 6514 states and 10245 transitions. [2023-12-19 06:50:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.575757575757576) internal successors, (184), 34 states have internal predecessors, (184), 8 states have call successors, (106), 5 states have call predecessors, (106), 10 states have return successors, (107), 8 states have call predecessors, (107), 8 states have call successors, (107) [2023-12-19 06:50:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6514 states and 10245 transitions. [2023-12-19 06:50:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 06:50:14,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:14,850 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:14,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 06:50:15,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:15,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:15,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash 845820865, now seen corresponding path program 1 times [2023-12-19 06:50:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:15,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007798270] [2023-12-19 06:50:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:15,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366850901] [2023-12-19 06:50:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:15,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:15,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:15,098 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:15,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 06:50:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:15,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 06:50:15,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 6219 proven. 195 refuted. 0 times theorem prover too weak. 3810 trivial. 0 not checked. [2023-12-19 06:50:25,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 99 proven. 114 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-19 06:50:27,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007798270] [2023-12-19 06:50:27,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366850901] [2023-12-19 06:50:27,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366850901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:27,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:27,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2023-12-19 06:50:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465241458] [2023-12-19 06:50:27,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:50:27,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:27,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:50:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2023-12-19 06:50:27,642 INFO L87 Difference]: Start difference. First operand 6514 states and 10245 transitions. Second operand has 18 states, 18 states have (on average 10.944444444444445) internal successors, (197), 18 states have internal predecessors, (197), 5 states have call successors, (144), 4 states have call predecessors, (144), 7 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) [2023-12-19 06:50:35,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:50:52,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:50:56,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:02,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:06,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:10,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:14,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:18,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:22,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:26,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:34,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:38,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:42,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:46,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:50,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:55,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:51:59,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:52:03,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:52:07,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:52:11,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:52:15,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:52:20,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 06:52:20,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 879 SyntacticMatches, 15 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=140, Invalid=363, Unknown=3, NotChecked=0, Total=506 [2023-12-19 06:52:20,523 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 107 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 293 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.9s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:20,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 93 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 247 Invalid, 23 Unknown, 0 Unchecked, 95.9s Time] [2023-12-19 06:52:20,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-12-19 06:52:20,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 06:52:20,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 06:52:20,725 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-19 06:52:20,729 INFO L158 Benchmark]: Toolchain (without parser) took 543058.68ms. Allocated memory was 290.5MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 236.0MB in the beginning and 942.0MB in the end (delta: -706.0MB). Peak memory consumption was 388.6MB. Max. memory is 8.0GB. [2023-12-19 06:52:20,729 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 186.6MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:52:20,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.95ms. Allocated memory is still 290.5MB. Free memory was 235.9MB in the beginning and 213.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-19 06:52:20,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.13ms. Allocated memory is still 290.5MB. Free memory was 213.3MB in the beginning and 205.9MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-19 06:52:20,730 INFO L158 Benchmark]: Boogie Preprocessor took 112.46ms. Allocated memory is still 290.5MB. Free memory was 205.9MB in the beginning and 197.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-19 06:52:20,730 INFO L158 Benchmark]: RCFGBuilder took 1081.83ms. Allocated memory is still 290.5MB. Free memory was 197.5MB in the beginning and 205.3MB in the end (delta: -7.8MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2023-12-19 06:52:20,730 INFO L158 Benchmark]: TraceAbstraction took 541405.69ms. Allocated memory was 290.5MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 204.8MB in the beginning and 942.0MB in the end (delta: -737.2MB). Peak memory consumption was 357.5MB. Max. memory is 8.0GB. [2023-12-19 06:52:20,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 186.6MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.95ms. Allocated memory is still 290.5MB. Free memory was 235.9MB in the beginning and 213.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.13ms. Allocated memory is still 290.5MB. Free memory was 213.3MB in the beginning and 205.9MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 112.46ms. Allocated memory is still 290.5MB. Free memory was 205.9MB in the beginning and 197.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1081.83ms. Allocated memory is still 290.5MB. Free memory was 197.5MB in the beginning and 205.3MB in the end (delta: -7.8MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * TraceAbstraction took 541405.69ms. Allocated memory was 290.5MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 204.8MB in the beginning and 942.0MB in the end (delta: -737.2MB). Peak memory consumption was 357.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...