/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-500_file-22.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:32:30,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:32:30,717 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 07:32:30,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:32:30,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:32:30,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:32:30,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:32:30,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:32:30,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:32:30,760 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:32:30,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:32:30,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:32:30,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:32:30,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:32:30,762 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:32:30,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:32:30,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:32:30,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:32:30,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:32:30,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:32:30,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:32:30,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:32:30,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:32:30,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:32:30,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:32:30,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:32:30,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:32:30,772 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:32:30,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:32:30,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:32:30,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:32:30,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:32:30,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:32:30,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:32:30,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:32:30,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:32:30,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:32:30,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:32:30,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:32:30,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:32:30,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:32:30,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:32:30,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:32:30,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:32:30,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:32:31,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:32:31,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:32:31,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:32:31,013 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:32:31,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i [2023-12-19 07:32:32,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:32:32,587 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:32:32,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i [2023-12-19 07:32:32,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e64d8e/8ed35a0d138947ec800adc7594fac025/FLAG2aa4bdd33 [2023-12-19 07:32:32,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e64d8e/8ed35a0d138947ec800adc7594fac025 [2023-12-19 07:32:32,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:32:32,647 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:32:32,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:32:32,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:32:32,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:32:32,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:32:32" (1/1) ... [2023-12-19 07:32:32,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c77f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:32, skipping insertion in model container [2023-12-19 07:32:32,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:32:32" (1/1) ... [2023-12-19 07:32:32,710 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:32:32,842 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-500_file-22.i[916,929] [2023-12-19 07:32:33,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:32:33,063 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:32:33,079 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-500_file-22.i[916,929] [2023-12-19 07:32:33,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:32:33,201 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:32:33,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33 WrapperNode [2023-12-19 07:32:33,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:32:33,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:32:33,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:32:33,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:32:33,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,290 INFO L138 Inliner]: procedures = 26, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 963 [2023-12-19 07:32:33,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:32:33,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:32:33,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:32:33,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:32:33,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,351 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 07:32:33,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:32:33,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:32:33,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:32:33,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:32:33,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (1/1) ... [2023-12-19 07:32:33,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:32:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:33,485 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 07:32:33,520 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 07:32:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:32:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:32:33,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:32:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:32:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:32:33,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:32:33,707 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:32:33,710 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:32:34,561 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:32:34,620 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:32:34,621 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:32:34,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:32:34 BoogieIcfgContainer [2023-12-19 07:32:34,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:32:34,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:32:34,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:32:34,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:32:34,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:32:32" (1/3) ... [2023-12-19 07:32:34,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a005bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:32:34, skipping insertion in model container [2023-12-19 07:32:34,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:33" (2/3) ... [2023-12-19 07:32:34,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a005bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:32:34, skipping insertion in model container [2023-12-19 07:32:34,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:32:34" (3/3) ... [2023-12-19 07:32:34,627 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-22.i [2023-12-19 07:32:34,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:32:34,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:32:34,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:32:34,694 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;@5ee29959, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:32:34,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:32:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 364 states, 238 states have (on average 1.6554621848739495) internal successors, (394), 239 states have internal predecessors, (394), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-19 07:32:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:34,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:34,767 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:34,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:34,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2073316004, now seen corresponding path program 1 times [2023-12-19 07:32:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:34,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853973705] [2023-12-19 07:32:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:35,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853973705] [2023-12-19 07:32:35,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:32:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577336636] [2023-12-19 07:32:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:35,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:35,176 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 07:32:35,180 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 07:32:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:35,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:32:35,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 29768 trivial. 0 not checked. [2023-12-19 07:32:35,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:35,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577336636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:35,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:35,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:32:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509089751] [2023-12-19 07:32:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:32:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:32:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:32:35,757 INFO L87 Difference]: Start difference. First operand has 364 states, 238 states have (on average 1.6554621848739495) internal successors, (394), 239 states have internal predecessors, (394), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:32:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:35,874 INFO L93 Difference]: Finished difference Result 725 states and 1401 transitions. [2023-12-19 07:32:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:32:35,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 2 states have call successors, (123) Word has length 773 [2023-12-19 07:32:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:35,884 INFO L225 Difference]: With dead ends: 725 [2023-12-19 07:32:35,884 INFO L226 Difference]: Without dead ends: 362 [2023-12-19 07:32:35,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:32:35,892 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:35,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 630 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-19 07:32:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-12-19 07:32:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 237 states have (on average 1.6329113924050633) internal successors, (387), 237 states have internal predecessors, (387), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-19 07:32:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 633 transitions. [2023-12-19 07:32:35,975 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 633 transitions. Word has length 773 [2023-12-19 07:32:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:35,975 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 633 transitions. [2023-12-19 07:32:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:32:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 633 transitions. [2023-12-19 07:32:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:35,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:35,991 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:36,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 07:32:36,200 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 07:32:36,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:36,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash -519698562, now seen corresponding path program 1 times [2023-12-19 07:32:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280439120] [2023-12-19 07:32:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:36,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53599883] [2023-12-19 07:32:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:36,287 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 07:32:36,306 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 07:32:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:36,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:32:36,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:36,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280439120] [2023-12-19 07:32:36,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53599883] [2023-12-19 07:32:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53599883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:36,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:32:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920942177] [2023-12-19 07:32:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:36,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:36,710 INFO L87 Difference]: Start difference. First operand 362 states and 633 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:36,797 INFO L93 Difference]: Finished difference Result 1056 states and 1842 transitions. [2023-12-19 07:32:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:32:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:36,810 INFO L225 Difference]: With dead ends: 1056 [2023-12-19 07:32:36,810 INFO L226 Difference]: Without dead ends: 695 [2023-12-19 07:32:36,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 07:32:36,816 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 571 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:36,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1324 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-12-19 07:32:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 377. [2023-12-19 07:32:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 252 states have (on average 1.6507936507936507) internal successors, (416), 252 states have internal predecessors, (416), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-19 07:32:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 662 transitions. [2023-12-19 07:32:36,862 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 662 transitions. Word has length 773 [2023-12-19 07:32:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:36,865 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 662 transitions. [2023-12-19 07:32:36,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 662 transitions. [2023-12-19 07:32:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:36,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:36,871 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:36,881 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 07:32:37,081 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 07:32:37,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:37,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -504179844, now seen corresponding path program 1 times [2023-12-19 07:32:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264190975] [2023-12-19 07:32:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:37,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:37,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665389693] [2023-12-19 07:32:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:37,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:37,208 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 07:32:37,233 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 07:32:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:37,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:32:37,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:38,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264190975] [2023-12-19 07:32:38,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665389693] [2023-12-19 07:32:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665389693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:32:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683398719] [2023-12-19 07:32:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:38,246 INFO L87 Difference]: Start difference. First operand 377 states and 662 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:38,310 INFO L93 Difference]: Finished difference Result 1129 states and 1984 transitions. [2023-12-19 07:32:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:32:38,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:38,317 INFO L225 Difference]: With dead ends: 1129 [2023-12-19 07:32:38,317 INFO L226 Difference]: Without dead ends: 753 [2023-12-19 07:32:38,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 07:32:38,320 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 294 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:38,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1231 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-19 07:32:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 750. [2023-12-19 07:32:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 501 states have (on average 1.6506986027944113) internal successors, (827), 501 states have internal predecessors, (827), 246 states have call successors, (246), 2 states have call predecessors, (246), 2 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2023-12-19 07:32:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1319 transitions. [2023-12-19 07:32:38,443 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1319 transitions. Word has length 773 [2023-12-19 07:32:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:38,444 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1319 transitions. [2023-12-19 07:32:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1319 transitions. [2023-12-19 07:32:38,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:38,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:38,451 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:38,474 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 07:32:38,660 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 07:32:38,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:38,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1471530498, now seen corresponding path program 1 times [2023-12-19 07:32:38,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:38,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202169516] [2023-12-19 07:32:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:38,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495909370] [2023-12-19 07:32:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:38,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:38,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:38,722 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 07:32:38,749 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 07:32:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:39,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:32:39,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:39,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:39,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:39,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202169516] [2023-12-19 07:32:39,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:39,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495909370] [2023-12-19 07:32:39,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495909370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:39,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:32:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116154329] [2023-12-19 07:32:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:32:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:32:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:32:39,843 INFO L87 Difference]: Start difference. First operand 750 states and 1319 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:40,470 INFO L93 Difference]: Finished difference Result 3130 states and 5563 transitions. [2023-12-19 07:32:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:32:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:40,482 INFO L225 Difference]: With dead ends: 3130 [2023-12-19 07:32:40,482 INFO L226 Difference]: Without dead ends: 2381 [2023-12-19 07:32:40,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:32:40,487 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1271 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:40,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 2219 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:32:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2023-12-19 07:32:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2365. [2023-12-19 07:32:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 1758 states have (on average 1.7246871444823664) internal successors, (3032), 1762 states have internal predecessors, (3032), 596 states have call successors, (596), 10 states have call predecessors, (596), 10 states have return successors, (596), 592 states have call predecessors, (596), 596 states have call successors, (596) [2023-12-19 07:32:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 4224 transitions. [2023-12-19 07:32:40,752 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 4224 transitions. Word has length 773 [2023-12-19 07:32:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 4224 transitions. [2023-12-19 07:32:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 4224 transitions. [2023-12-19 07:32:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:40,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:40,762 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:40,786 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 07:32:40,972 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 07:32:40,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:40,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1888927104, now seen corresponding path program 1 times [2023-12-19 07:32:40,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:40,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149057481] [2023-12-19 07:32:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:41,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:41,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118711128] [2023-12-19 07:32:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:41,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:41,031 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 07:32:41,037 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 07:32:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:41,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:32:41,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:42,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:42,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:42,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149057481] [2023-12-19 07:32:42,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:42,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118711128] [2023-12-19 07:32:42,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118711128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:42,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:32:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199233256] [2023-12-19 07:32:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:32:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:32:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:32:42,053 INFO L87 Difference]: Start difference. First operand 2365 states and 4224 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:42,491 INFO L93 Difference]: Finished difference Result 9401 states and 16781 transitions. [2023-12-19 07:32:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:32:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:42,527 INFO L225 Difference]: With dead ends: 9401 [2023-12-19 07:32:42,527 INFO L226 Difference]: Without dead ends: 7037 [2023-12-19 07:32:42,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 770 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 07:32:42,537 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 714 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:42,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 2396 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:32:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7037 states. [2023-12-19 07:32:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7037 to 5023. [2023-12-19 07:32:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 3810 states have (on average 1.7338582677165355) internal successors, (6606), 3818 states have internal predecessors, (6606), 1192 states have call successors, (1192), 20 states have call predecessors, (1192), 20 states have return successors, (1192), 1184 states have call predecessors, (1192), 1192 states have call successors, (1192) [2023-12-19 07:32:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 8990 transitions. [2023-12-19 07:32:43,221 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 8990 transitions. Word has length 773 [2023-12-19 07:32:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:43,222 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 8990 transitions. [2023-12-19 07:32:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 8990 transitions. [2023-12-19 07:32:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:43,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:43,232 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:43,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:32:43,442 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 07:32:43,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 444465534, now seen corresponding path program 1 times [2023-12-19 07:32:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278265712] [2023-12-19 07:32:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:43,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614532165] [2023-12-19 07:32:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:43,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:43,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:43,494 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 07:32:43,540 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 07:32:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:43,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:32:43,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:43,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:43,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278265712] [2023-12-19 07:32:43,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:43,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614532165] [2023-12-19 07:32:43,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614532165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:43,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:43,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:32:43,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273262416] [2023-12-19 07:32:43,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:32:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:32:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:32:43,907 INFO L87 Difference]: Start difference. First operand 5023 states and 8990 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:44,979 INFO L93 Difference]: Finished difference Result 19943 states and 34970 transitions. [2023-12-19 07:32:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:32:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:45,050 INFO L225 Difference]: With dead ends: 19943 [2023-12-19 07:32:45,050 INFO L226 Difference]: Without dead ends: 14921 [2023-12-19 07:32:45,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:32:45,068 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 1123 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:45,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 3250 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:32:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2023-12-19 07:32:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 8131. [2023-12-19 07:32:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8131 states, 5922 states have (on average 1.6828774062816616) internal successors, (9966), 5946 states have internal predecessors, (9966), 2168 states have call successors, (2168), 40 states have call predecessors, (2168), 40 states have return successors, (2168), 2144 states have call predecessors, (2168), 2168 states have call successors, (2168) [2023-12-19 07:32:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8131 states to 8131 states and 14302 transitions. [2023-12-19 07:32:46,397 INFO L78 Accepts]: Start accepts. Automaton has 8131 states and 14302 transitions. Word has length 773 [2023-12-19 07:32:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:46,398 INFO L495 AbstractCegarLoop]: Abstraction has 8131 states and 14302 transitions. [2023-12-19 07:32:46,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8131 states and 14302 transitions. [2023-12-19 07:32:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:46,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:46,409 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:46,418 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 07:32:46,618 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 07:32:46,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:46,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1911339716, now seen corresponding path program 1 times [2023-12-19 07:32:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:46,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182622497] [2023-12-19 07:32:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:46,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:46,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964092665] [2023-12-19 07:32:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:46,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:46,785 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 07:32:46,809 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 07:32:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:47,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:32:47,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:47,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:47,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:47,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182622497] [2023-12-19 07:32:47,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:47,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964092665] [2023-12-19 07:32:47,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964092665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:47,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:47,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:32:47,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665741047] [2023-12-19 07:32:47,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:47,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:47,228 INFO L87 Difference]: Start difference. First operand 8131 states and 14302 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:47,785 INFO L93 Difference]: Finished difference Result 21729 states and 38374 transitions. [2023-12-19 07:32:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:32:47,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:47,829 INFO L225 Difference]: With dead ends: 21729 [2023-12-19 07:32:47,830 INFO L226 Difference]: Without dead ends: 13599 [2023-12-19 07:32:47,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 07:32:47,856 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 271 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:47,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1308 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13599 states. [2023-12-19 07:32:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13599 to 13565. [2023-12-19 07:32:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13565 states, 10588 states have (on average 1.7142047601057802) internal successors, (18150), 10644 states have internal predecessors, (18150), 2904 states have call successors, (2904), 72 states have call predecessors, (2904), 72 states have return successors, (2904), 2848 states have call predecessors, (2904), 2904 states have call successors, (2904) [2023-12-19 07:32:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13565 states to 13565 states and 23958 transitions. [2023-12-19 07:32:48,752 INFO L78 Accepts]: Start accepts. Automaton has 13565 states and 23958 transitions. Word has length 773 [2023-12-19 07:32:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:48,753 INFO L495 AbstractCegarLoop]: Abstraction has 13565 states and 23958 transitions. [2023-12-19 07:32:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 13565 states and 23958 transitions. [2023-12-19 07:32:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:48,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:48,771 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:48,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 07:32:48,979 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 07:32:48,980 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 11888318, now seen corresponding path program 1 times [2023-12-19 07:32:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985521865] [2023-12-19 07:32:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:49,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843833287] [2023-12-19 07:32:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:49,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:49,121 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 07:32:49,151 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 07:32:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:49,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:32:49,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:49,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:49,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985521865] [2023-12-19 07:32:49,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843833287] [2023-12-19 07:32:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843833287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:49,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:32:49,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564893541] [2023-12-19 07:32:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:49,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:49,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:49,539 INFO L87 Difference]: Start difference. First operand 13565 states and 23958 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:50,159 INFO L93 Difference]: Finished difference Result 38311 states and 67730 transitions. [2023-12-19 07:32:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:32:50,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:50,222 INFO L225 Difference]: With dead ends: 38311 [2023-12-19 07:32:50,222 INFO L226 Difference]: Without dead ends: 24747 [2023-12-19 07:32:50,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 07:32:50,253 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 319 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:50,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1274 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24747 states. [2023-12-19 07:32:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24747 to 24729. [2023-12-19 07:32:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24729 states, 19936 states have (on average 1.7174959871589086) internal successors, (34240), 20056 states have internal predecessors, (34240), 4648 states have call successors, (4648), 144 states have call predecessors, (4648), 144 states have return successors, (4648), 4528 states have call predecessors, (4648), 4648 states have call successors, (4648) [2023-12-19 07:32:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24729 states to 24729 states and 43536 transitions. [2023-12-19 07:32:51,929 INFO L78 Accepts]: Start accepts. Automaton has 24729 states and 43536 transitions. Word has length 773 [2023-12-19 07:32:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:51,930 INFO L495 AbstractCegarLoop]: Abstraction has 24729 states and 43536 transitions. [2023-12-19 07:32:51,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 24729 states and 43536 transitions. [2023-12-19 07:32:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:51,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:51,958 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:51,984 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 07:32:52,168 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 07:32:52,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:52,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 237108796, now seen corresponding path program 1 times [2023-12-19 07:32:52,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:52,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915371599] [2023-12-19 07:32:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:52,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:52,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201252569] [2023-12-19 07:32:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:52,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:52,231 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 07:32:52,240 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 07:32:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:52,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:32:52,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:52,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915371599] [2023-12-19 07:32:52,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201252569] [2023-12-19 07:32:52,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201252569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:52,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:52,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:32:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797480173] [2023-12-19 07:32:52,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:52,728 INFO L87 Difference]: Start difference. First operand 24729 states and 43536 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:54,230 INFO L93 Difference]: Finished difference Result 74017 states and 130310 transitions. [2023-12-19 07:32:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:32:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:32:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:54,393 INFO L225 Difference]: With dead ends: 74017 [2023-12-19 07:32:54,393 INFO L226 Difference]: Without dead ends: 49289 [2023-12-19 07:32:54,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 07:32:54,443 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 584 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:54,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1650 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49289 states. [2023-12-19 07:32:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49289 to 49287. [2023-12-19 07:32:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49287 states, 39702 states have (on average 1.712709687169412) internal successors, (67998), 39942 states have internal predecessors, (67998), 9296 states have call successors, (9296), 288 states have call predecessors, (9296), 288 states have return successors, (9296), 9056 states have call predecessors, (9296), 9296 states have call successors, (9296) [2023-12-19 07:32:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49287 states to 49287 states and 86590 transitions. [2023-12-19 07:32:57,397 INFO L78 Accepts]: Start accepts. Automaton has 49287 states and 86590 transitions. Word has length 773 [2023-12-19 07:32:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:57,399 INFO L495 AbstractCegarLoop]: Abstraction has 49287 states and 86590 transitions. [2023-12-19 07:32:57,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:32:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 49287 states and 86590 transitions. [2023-12-19 07:32:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-19 07:32:57,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:57,439 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:57,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 07:32:57,650 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 07:32:57,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:57,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1623312190, now seen corresponding path program 1 times [2023-12-19 07:32:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:57,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389314619] [2023-12-19 07:32:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:57,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:57,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125323080] [2023-12-19 07:32:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:57,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:57,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:57,980 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 07:32:58,031 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 07:32:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:58,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:32:58,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:32:59,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389314619] [2023-12-19 07:32:59,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125323080] [2023-12-19 07:32:59,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125323080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:59,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:59,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:32:59,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592569867] [2023-12-19 07:32:59,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:59,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:59,926 INFO L87 Difference]: Start difference. First operand 49287 states and 86590 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:33:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:01,649 INFO L93 Difference]: Finished difference Result 108007 states and 191160 transitions. [2023-12-19 07:33:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:01,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 773 [2023-12-19 07:33:01,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:02,034 INFO L225 Difference]: With dead ends: 108007 [2023-12-19 07:33:02,035 INFO L226 Difference]: Without dead ends: 58721 [2023-12-19 07:33:02,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 07:33:02,107 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 233 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:02,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1399 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58721 states. [2023-12-19 07:33:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58721 to 58721. [2023-12-19 07:33:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58721 states, 49009 states have (on average 1.7459038135852598) internal successors, (85565), 49249 states have internal predecessors, (85565), 9419 states have call successors, (9419), 292 states have call predecessors, (9419), 292 states have return successors, (9419), 9179 states have call predecessors, (9419), 9419 states have call successors, (9419) [2023-12-19 07:33:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58721 states to 58721 states and 104403 transitions. [2023-12-19 07:33:05,578 INFO L78 Accepts]: Start accepts. Automaton has 58721 states and 104403 transitions. Word has length 773 [2023-12-19 07:33:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:05,580 INFO L495 AbstractCegarLoop]: Abstraction has 58721 states and 104403 transitions. [2023-12-19 07:33:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:33:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 58721 states and 104403 transitions. [2023-12-19 07:33:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:33:05,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:05,625 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:05,635 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 07:33:05,843 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 07:33:05,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:05,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1393107680, now seen corresponding path program 1 times [2023-12-19 07:33:05,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:05,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887371795] [2023-12-19 07:33:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:05,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:06,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132241988] [2023-12-19 07:33:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:06,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:06,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:06,165 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 07:33:06,224 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 07:33:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:06,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:33:06,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 11706 proven. 270 refuted. 0 times theorem prover too weak. 18036 trivial. 0 not checked. [2023-12-19 07:33:07,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 96 proven. 270 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-19 07:33:07,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887371795] [2023-12-19 07:33:07,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132241988] [2023-12-19 07:33:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132241988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:07,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:07,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:33:07,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522762387] [2023-12-19 07:33:07,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:07,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:33:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:33:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:33:07,737 INFO L87 Difference]: Start difference. First operand 58721 states and 104403 transitions. Second operand has 8 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 3 states have call successors, (213), 2 states have call predecessors, (213), 4 states have return successors, (214), 3 states have call predecessors, (214), 3 states have call successors, (214) [2023-12-19 07:33:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:10,476 INFO L93 Difference]: Finished difference Result 117573 states and 208225 transitions. [2023-12-19 07:33:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:33:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 3 states have call successors, (213), 2 states have call predecessors, (213), 4 states have return successors, (214), 3 states have call predecessors, (214), 3 states have call successors, (214) Word has length 774 [2023-12-19 07:33:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:10,615 INFO L225 Difference]: With dead ends: 117573 [2023-12-19 07:33:10,615 INFO L226 Difference]: Without dead ends: 59629 [2023-12-19 07:33:10,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:33:10,692 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 348 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:10,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1160 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:33:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59629 states. [2023-12-19 07:33:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59629 to 58981. [2023-12-19 07:33:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58981 states, 49204 states have (on average 1.7401024306966912) internal successors, (85620), 49444 states have internal predecessors, (85620), 9419 states have call successors, (9419), 357 states have call predecessors, (9419), 357 states have return successors, (9419), 9179 states have call predecessors, (9419), 9419 states have call successors, (9419) [2023-12-19 07:33:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58981 states to 58981 states and 104458 transitions. [2023-12-19 07:33:14,302 INFO L78 Accepts]: Start accepts. Automaton has 58981 states and 104458 transitions. Word has length 774 [2023-12-19 07:33:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:14,303 INFO L495 AbstractCegarLoop]: Abstraction has 58981 states and 104458 transitions. [2023-12-19 07:33:14,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 3 states have call successors, (213), 2 states have call predecessors, (213), 4 states have return successors, (214), 3 states have call predecessors, (214), 3 states have call successors, (214) [2023-12-19 07:33:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 58981 states and 104458 transitions. [2023-12-19 07:33:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:33:14,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:14,352 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:14,363 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 07:33:14,561 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 07:33:14,562 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:14,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1947919458, now seen corresponding path program 1 times [2023-12-19 07:33:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169987279] [2023-12-19 07:33:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:14,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:14,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111741812] [2023-12-19 07:33:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:14,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:14,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:14,634 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 07:33:14,650 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 07:33:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:15,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:33:15,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:33:16,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:16,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:16,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169987279] [2023-12-19 07:33:16,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:16,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111741812] [2023-12-19 07:33:16,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111741812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:16,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:16,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:33:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22925969] [2023-12-19 07:33:16,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:16,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:33:16,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:33:16,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:33:16,122 INFO L87 Difference]: Start difference. First operand 58981 states and 104458 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:33:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:22,757 INFO L93 Difference]: Finished difference Result 255205 states and 451832 transitions. [2023-12-19 07:33:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:33:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 774 [2023-12-19 07:33:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:23,444 INFO L225 Difference]: With dead ends: 255205 [2023-12-19 07:33:23,445 INFO L226 Difference]: Without dead ends: 197139 [2023-12-19 07:33:23,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:33:23,566 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 1726 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:23,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 2953 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 07:33:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197139 states. [2023-12-19 07:33:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197139 to 185863. [2023-12-19 07:33:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185863 states, 154413 states have (on average 1.7092926113733948) internal successors, (263937), 155269 states have internal predecessors, (263937), 30211 states have call successors, (30211), 1238 states have call predecessors, (30211), 1238 states have return successors, (30211), 29355 states have call predecessors, (30211), 30211 states have call successors, (30211) [2023-12-19 07:33:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185863 states to 185863 states and 324359 transitions. [2023-12-19 07:33:34,917 INFO L78 Accepts]: Start accepts. Automaton has 185863 states and 324359 transitions. Word has length 774 [2023-12-19 07:33:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:34,918 INFO L495 AbstractCegarLoop]: Abstraction has 185863 states and 324359 transitions. [2023-12-19 07:33:34,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:33:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 185863 states and 324359 transitions. [2023-12-19 07:33:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:33:35,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:35,058 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:35,067 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 07:33:35,267 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 07:33:35,268 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:35,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:35,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1380333090, now seen corresponding path program 1 times [2023-12-19 07:33:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863387513] [2023-12-19 07:33:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:35,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472403616] [2023-12-19 07:33:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:35,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:35,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:35,322 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 07:33:35,325 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 07:33:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:36,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:33:36,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-19 07:33:37,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:37,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:37,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863387513] [2023-12-19 07:33:37,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:37,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472403616] [2023-12-19 07:33:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472403616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:37,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:37,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:33:37,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668741927] [2023-12-19 07:33:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:33:37,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:33:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:33:37,661 INFO L87 Difference]: Start difference. First operand 185863 states and 324359 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:33:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:48,923 INFO L93 Difference]: Finished difference Result 536521 states and 934814 transitions. [2023-12-19 07:33:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:33:48,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 774 [2023-12-19 07:33:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:50,209 INFO L225 Difference]: With dead ends: 536521 [2023-12-19 07:33:50,210 INFO L226 Difference]: Without dead ends: 369155 [2023-12-19 07:33:50,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:33:50,522 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 882 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:50,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2475 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:33:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369155 states. [2023-12-19 07:34:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369155 to 359423. [2023-12-19 07:34:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359423 states, 306301 states have (on average 1.7210684914512195) internal successors, (527165), 307773 states have internal predecessors, (527165), 51003 states have call successors, (51003), 2118 states have call predecessors, (51003), 2118 states have return successors, (51003), 49531 states have call predecessors, (51003), 51003 states have call successors, (51003) [2023-12-19 07:34:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359423 states to 359423 states and 629171 transitions. [2023-12-19 07:34:12,835 INFO L78 Accepts]: Start accepts. Automaton has 359423 states and 629171 transitions. Word has length 774 [2023-12-19 07:34:12,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:12,836 INFO L495 AbstractCegarLoop]: Abstraction has 359423 states and 629171 transitions. [2023-12-19 07:34:12,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-19 07:34:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 359423 states and 629171 transitions. [2023-12-19 07:34:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:34:12,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:12,975 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:12,987 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 07:34:13,185 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 07:34:13,187 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:13,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:13,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1326286304, now seen corresponding path program 1 times [2023-12-19 07:34:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:13,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994340292] [2023-12-19 07:34:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:13,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:13,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952000781] [2023-12-19 07:34:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:13,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:13,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:13,311 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 07:34:13,325 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 07:34:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:13,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:34:13,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 14822 proven. 156 refuted. 0 times theorem prover too weak. 15034 trivial. 0 not checked. [2023-12-19 07:34:14,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 210 proven. 156 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-19 07:34:14,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994340292] [2023-12-19 07:34:14,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952000781] [2023-12-19 07:34:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952000781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:14,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:14,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:34:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158434118] [2023-12-19 07:34:14,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:34:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:14,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:34:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:34:14,770 INFO L87 Difference]: Start difference. First operand 359423 states and 629171 transitions. Second operand has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 3 states have call successors, (175), 2 states have call predecessors, (175), 4 states have return successors, (176), 3 states have call predecessors, (176), 3 states have call successors, (176) [2023-12-19 07:34:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:25,527 INFO L93 Difference]: Finished difference Result 568617 states and 998707 transitions. [2023-12-19 07:34:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:34:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 3 states have call successors, (175), 2 states have call predecessors, (175), 4 states have return successors, (176), 3 states have call predecessors, (176), 3 states have call successors, (176) Word has length 774 [2023-12-19 07:34:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:26,734 INFO L225 Difference]: With dead ends: 568617 [2023-12-19 07:34:26,734 INFO L226 Difference]: Without dead ends: 221323 [2023-12-19 07:34:27,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:34:27,159 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 704 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:27,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1250 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:34:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221323 states. [2023-12-19 07:34:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221323 to 219395. [2023-12-19 07:34:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219395 states, 191840 states have (on average 1.7511259382819016) internal successors, (335936), 192544 states have internal predecessors, (335936), 26427 states have call successors, (26427), 1127 states have call predecessors, (26427), 1127 states have return successors, (26427), 25723 states have call predecessors, (26427), 26427 states have call successors, (26427) [2023-12-19 07:34:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219395 states to 219395 states and 388790 transitions. [2023-12-19 07:34:38,854 INFO L78 Accepts]: Start accepts. Automaton has 219395 states and 388790 transitions. Word has length 774 [2023-12-19 07:34:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:38,855 INFO L495 AbstractCegarLoop]: Abstraction has 219395 states and 388790 transitions. [2023-12-19 07:34:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 3 states have call successors, (175), 2 states have call predecessors, (175), 4 states have return successors, (176), 3 states have call predecessors, (176), 3 states have call successors, (176) [2023-12-19 07:34:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 219395 states and 388790 transitions. [2023-12-19 07:34:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:34:39,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:39,260 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:39,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:39,468 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 07:34:39,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:39,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 925464288, now seen corresponding path program 1 times [2023-12-19 07:34:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:39,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560476020] [2023-12-19 07:34:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:39,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765808301] [2023-12-19 07:34:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:39,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:39,541 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 07:34:39,551 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 07:34:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:39,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:34:39,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 15122 proven. 186 refuted. 0 times theorem prover too weak. 14704 trivial. 0 not checked. [2023-12-19 07:34:40,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 180 proven. 186 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-19 07:34:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560476020] [2023-12-19 07:34:40,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765808301] [2023-12-19 07:34:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765808301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:40,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:40,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:34:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593795802] [2023-12-19 07:34:40,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:40,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:34:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:34:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:34:40,749 INFO L87 Difference]: Start difference. First operand 219395 states and 388790 transitions. Second operand has 10 states, 10 states have (on average 25.8) internal successors, (258), 10 states have internal predecessors, (258), 3 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 3 states have call predecessors, (186), 3 states have call successors, (186) [2023-12-19 07:34:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:48,695 INFO L93 Difference]: Finished difference Result 436077 states and 771158 transitions. [2023-12-19 07:34:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:34:48,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 10 states have internal predecessors, (258), 3 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 3 states have call predecessors, (186), 3 states have call successors, (186) Word has length 774 [2023-12-19 07:34:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:49,438 INFO L225 Difference]: With dead ends: 436077 [2023-12-19 07:34:49,438 INFO L226 Difference]: Without dead ends: 227183 [2023-12-19 07:34:49,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1551 GetRequests, 1538 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:34:49,674 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 963 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:49,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1570 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:34:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227183 states. [2023-12-19 07:35:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227183 to 220775. [2023-12-19 07:35:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220775 states, 193155 states have (on average 1.7460122699386502) internal successors, (337251), 193859 states have internal predecessors, (337251), 26427 states have call successors, (26427), 1192 states have call predecessors, (26427), 1192 states have return successors, (26427), 25723 states have call predecessors, (26427), 26427 states have call successors, (26427) [2023-12-19 07:35:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220775 states to 220775 states and 390105 transitions. [2023-12-19 07:35:01,927 INFO L78 Accepts]: Start accepts. Automaton has 220775 states and 390105 transitions. Word has length 774 [2023-12-19 07:35:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:01,928 INFO L495 AbstractCegarLoop]: Abstraction has 220775 states and 390105 transitions. [2023-12-19 07:35:01,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 10 states have internal predecessors, (258), 3 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 3 states have call predecessors, (186), 3 states have call successors, (186) [2023-12-19 07:35:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 220775 states and 390105 transitions. [2023-12-19 07:35:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 07:35:02,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:02,302 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:02,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:35:02,511 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 07:35:02,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:02,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash 298813376, now seen corresponding path program 1 times [2023-12-19 07:35:02,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:02,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295136451] [2023-12-19 07:35:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:02,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:02,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968854900] [2023-12-19 07:35:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:02,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:02,573 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:35:02,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:35:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:03,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:35:03,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 15122 proven. 186 refuted. 0 times theorem prover too weak. 14704 trivial. 0 not checked. [2023-12-19 07:35:03,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 180 proven. 186 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-19 07:35:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295136451] [2023-12-19 07:35:03,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968854900] [2023-12-19 07:35:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968854900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:03,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:03,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:35:03,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347384215] [2023-12-19 07:35:03,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:35:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:35:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:35:03,790 INFO L87 Difference]: Start difference. First operand 220775 states and 390105 transitions. Second operand has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 3 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 3 states have call predecessors, (186), 3 states have call successors, (186) [2023-12-19 07:35:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:12,028 INFO L93 Difference]: Finished difference Result 436237 states and 767894 transitions. [2023-12-19 07:35:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:35:12,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 3 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 3 states have call predecessors, (186), 3 states have call successors, (186) Word has length 775 [2023-12-19 07:35:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:12,840 INFO L225 Difference]: With dead ends: 436237 [2023-12-19 07:35:12,841 INFO L226 Difference]: Without dead ends: 226063 [2023-12-19 07:35:13,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:35:13,076 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 367 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:13,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1572 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:35:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226063 states. [2023-12-19 07:35:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226063 to 223015. [2023-12-19 07:35:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223015 states, 195395 states have (on average 1.737460016888866) internal successors, (339491), 196099 states have internal predecessors, (339491), 26427 states have call successors, (26427), 1192 states have call predecessors, (26427), 1192 states have return successors, (26427), 25723 states have call predecessors, (26427), 26427 states have call successors, (26427) [2023-12-19 07:35:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223015 states to 223015 states and 392345 transitions. [2023-12-19 07:35:27,006 INFO L78 Accepts]: Start accepts. Automaton has 223015 states and 392345 transitions. Word has length 775 [2023-12-19 07:35:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:27,007 INFO L495 AbstractCegarLoop]: Abstraction has 223015 states and 392345 transitions. [2023-12-19 07:35:27,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 3 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 3 states have call predecessors, (186), 3 states have call successors, (186) [2023-12-19 07:35:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 223015 states and 392345 transitions. [2023-12-19 07:35:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 07:35:27,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:27,083 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:27,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 07:35:27,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:35:27,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:27,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1546553790, now seen corresponding path program 1 times [2023-12-19 07:35:27,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:27,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664581283] [2023-12-19 07:35:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:27,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:27,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:27,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050745147] [2023-12-19 07:35:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:27,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:27,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:27,473 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:35:27,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:35:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:27,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:35:27,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 13868 proven. 129 refuted. 0 times theorem prover too weak. 16015 trivial. 0 not checked. [2023-12-19 07:35:28,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 237 proven. 129 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-19 07:35:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664581283] [2023-12-19 07:35:28,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050745147] [2023-12-19 07:35:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050745147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:28,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:28,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 07:35:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385977622] [2023-12-19 07:35:28,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:35:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:35:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:35:28,622 INFO L87 Difference]: Start difference. First operand 223015 states and 392345 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) [2023-12-19 07:35:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:37,214 INFO L93 Difference]: Finished difference Result 438483 states and 768731 transitions. [2023-12-19 07:35:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:35:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) Word has length 775 [2023-12-19 07:35:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:37,795 INFO L225 Difference]: With dead ends: 438483 [2023-12-19 07:35:37,796 INFO L226 Difference]: Without dead ends: 225333 [2023-12-19 07:35:38,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1556 GetRequests, 1541 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:35:38,026 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 975 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:38,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1235 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:35:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225333 states. [2023-12-19 07:35:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225333 to 223275. [2023-12-19 07:35:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223275 states, 195590 states have (on average 1.7287080116570377) internal successors, (338118), 196294 states have internal predecessors, (338118), 26427 states have call successors, (26427), 1257 states have call predecessors, (26427), 1257 states have return successors, (26427), 25723 states have call predecessors, (26427), 26427 states have call successors, (26427) [2023-12-19 07:35:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223275 states to 223275 states and 390972 transitions. [2023-12-19 07:35:50,565 INFO L78 Accepts]: Start accepts. Automaton has 223275 states and 390972 transitions. Word has length 775 [2023-12-19 07:35:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:50,566 INFO L495 AbstractCegarLoop]: Abstraction has 223275 states and 390972 transitions. [2023-12-19 07:35:50,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) [2023-12-19 07:35:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 223275 states and 390972 transitions. [2023-12-19 07:35:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 07:35:50,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:50,648 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:50,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:35:50,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:35:50,859 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:50,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1327699072, now seen corresponding path program 1 times [2023-12-19 07:35:50,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:50,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392897687] [2023-12-19 07:35:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:50,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:50,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638563443] [2023-12-19 07:35:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:50,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:50,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:50,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:35:50,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:35:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:51,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:35:51,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 14528 proven. 219 refuted. 0 times theorem prover too weak. 15265 trivial. 0 not checked. [2023-12-19 07:35:53,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392897687] [2023-12-19 07:35:54,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638563443] [2023-12-19 07:35:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638563443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:35:54,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:35:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-19 07:35:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745954790] [2023-12-19 07:35:54,394 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:35:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:35:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:35:54,396 INFO L87 Difference]: Start difference. First operand 223275 states and 390972 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:36:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:03,370 INFO L93 Difference]: Finished difference Result 441425 states and 771418 transitions. [2023-12-19 07:36:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:36:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 775 [2023-12-19 07:36:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:03,931 INFO L225 Difference]: With dead ends: 441425 [2023-12-19 07:36:03,932 INFO L226 Difference]: Without dead ends: 224583 [2023-12-19 07:36:04,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1276 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:36:04,159 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 671 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:04,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1791 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:36:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224583 states. [2023-12-19 07:36:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224583 to 223407. [2023-12-19 07:36:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223407 states, 195689 states have (on average 1.725968245532452) internal successors, (337753), 196393 states have internal predecessors, (337753), 26427 states have call successors, (26427), 1290 states have call predecessors, (26427), 1290 states have return successors, (26427), 25723 states have call predecessors, (26427), 26427 states have call successors, (26427) [2023-12-19 07:36:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223407 states to 223407 states and 390607 transitions. [2023-12-19 07:36:17,041 INFO L78 Accepts]: Start accepts. Automaton has 223407 states and 390607 transitions. Word has length 775 [2023-12-19 07:36:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:17,041 INFO L495 AbstractCegarLoop]: Abstraction has 223407 states and 390607 transitions. [2023-12-19 07:36:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:36:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 223407 states and 390607 transitions. [2023-12-19 07:36:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 07:36:17,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:17,124 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:17,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:36:17,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:17,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1909430146, now seen corresponding path program 1 times [2023-12-19 07:36:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863344122] [2023-12-19 07:36:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:17,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:17,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43050983] [2023-12-19 07:36:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:17,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:17,728 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:17,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:36:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:18,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 07:36:18,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 6851 proven. 666 refuted. 0 times theorem prover too weak. 22495 trivial. 0 not checked. [2023-12-19 07:36:19,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:36:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 60 proven. 669 refuted. 0 times theorem prover too weak. 29283 trivial. 0 not checked. [2023-12-19 07:36:20,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863344122] [2023-12-19 07:36:20,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:20,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43050983] [2023-12-19 07:36:20,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43050983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:36:20,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:36:20,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 07:36:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116584828] [2023-12-19 07:36:20,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:36:20,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 07:36:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 07:36:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:36:20,229 INFO L87 Difference]: Start difference. First operand 223407 states and 390607 transitions. Second operand has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 5 states have call successors, (240), 3 states have call predecessors, (240), 7 states have return successors, (241), 5 states have call predecessors, (241), 5 states have call successors, (241) [2023-12-19 07:36:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:31,273 INFO L93 Difference]: Finished difference Result 445667 states and 768002 transitions. [2023-12-19 07:36:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 07:36:31,274 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 5 states have call successors, (240), 3 states have call predecessors, (240), 7 states have return successors, (241), 5 states have call predecessors, (241), 5 states have call successors, (241) Word has length 775 [2023-12-19 07:36:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:31,793 INFO L225 Difference]: With dead ends: 445667 [2023-12-19 07:36:31,793 INFO L226 Difference]: Without dead ends: 234693 [2023-12-19 07:36:32,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1556 GetRequests, 1534 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:36:32,008 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 728 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:32,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 2091 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:36:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234693 states. [2023-12-19 07:36:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234693 to 229559. [2023-12-19 07:36:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229559 states, 200303 states have (on average 1.7054113018776553) internal successors, (341599), 201007 states have internal predecessors, (341599), 26427 states have call successors, (26427), 2828 states have call predecessors, (26427), 2828 states have return successors, (26427), 25723 states have call predecessors, (26427), 26427 states have call successors, (26427) [2023-12-19 07:36:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229559 states to 229559 states and 394453 transitions. [2023-12-19 07:36:44,195 INFO L78 Accepts]: Start accepts. Automaton has 229559 states and 394453 transitions. Word has length 775 [2023-12-19 07:36:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:44,196 INFO L495 AbstractCegarLoop]: Abstraction has 229559 states and 394453 transitions. [2023-12-19 07:36:44,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 5 states have call successors, (240), 3 states have call predecessors, (240), 7 states have return successors, (241), 5 states have call predecessors, (241), 5 states have call successors, (241) [2023-12-19 07:36:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 229559 states and 394453 transitions. [2023-12-19 07:36:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 07:36:44,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:44,597 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:44,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:44,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:44,805 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:44,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1100083520, now seen corresponding path program 1 times [2023-12-19 07:36:44,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:44,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711337431] [2023-12-19 07:36:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:44,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:44,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:44,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095591689] [2023-12-19 07:36:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:44,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:44,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:44,854 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:44,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:36:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:45,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:36:45,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 10298 proven. 78 refuted. 0 times theorem prover too weak. 19636 trivial. 0 not checked. [2023-12-19 07:36:45,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:36:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 288 proven. 78 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-19 07:36:45,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:45,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711337431] [2023-12-19 07:36:45,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:45,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095591689] [2023-12-19 07:36:45,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095591689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:36:45,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:36:45,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:36:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176863777] [2023-12-19 07:36:45,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:36:45,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:36:45,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:36:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:36:45,960 INFO L87 Difference]: Start difference. First operand 229559 states and 394453 transitions. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-12-19 07:37:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:17,480 INFO L93 Difference]: Finished difference Result 775873 states and 1299361 transitions. [2023-12-19 07:37:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 07:37:17,481 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 775 [2023-12-19 07:37:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:19,425 INFO L225 Difference]: With dead ends: 775873 [2023-12-19 07:37:19,425 INFO L226 Difference]: Without dead ends: 556835 [2023-12-19 07:37:19,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2023-12-19 07:37:19,781 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 2133 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 4757 SdHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:19,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 4757 Invalid, 4318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1144 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 07:37:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556835 states.