/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_variablewrapping_wrapper-ap_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:14:54,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:14:54,211 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 15:14:54,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:14:54,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:14:54,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:14:54,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:14:54,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:14:54,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:14:54,234 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:14:54,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:14:54,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:14:54,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:14:54,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:14:54,236 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:14:54,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:14:54,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:14:54,237 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:14:54,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:14:54,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:14:54,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:14:54,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:14:54,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:14:54,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:14:54,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:14:54,245 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:14:54,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:14:54,245 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:14:54,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:14:54,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:14:54,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:14:54,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:14:54,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:14:54,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:14:54,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:14:54,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:14:54,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:14:54,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:14:54,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:14:54,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:14:54,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:14:54,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:14:54,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:14:54,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:14:54,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:14:54,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:14:54,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:14:54,447 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:14:54,451 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:14:54,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i [2023-12-19 15:14:55,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:14:55,633 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:14:55,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i [2023-12-19 15:14:55,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3610a7102/206162962981410aa9359a3ffb2686ca/FLAGc346caf66 [2023-12-19 15:14:55,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3610a7102/206162962981410aa9359a3ffb2686ca [2023-12-19 15:14:55,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:14:55,659 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:14:55,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:14:55,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:14:55,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:14:55,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:55,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2169f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55, skipping insertion in model container [2023-12-19 15:14:55,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:55,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:14:55,814 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_variablewrapping_wrapper-ap_file-39.i[917,930] [2023-12-19 15:14:55,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:14:55,881 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:14:55,889 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_variablewrapping_wrapper-ap_file-39.i[917,930] [2023-12-19 15:14:55,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:14:55,945 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:14:55,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55 WrapperNode [2023-12-19 15:14:55,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:14:55,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:14:55,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:14:55,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:14:55,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:55,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:55,996 INFO L138 Inliner]: procedures = 29, calls = 191, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 612 [2023-12-19 15:14:55,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:14:55,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:14:55,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:14:55,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:14:56,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,025 INFO L175 MemorySlicer]: Split 160 memory accesses to 5 slices as follows [2, 32, 22, 97, 7]. 61 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 3, 3, 5, 1]. The 16 writes are split as follows [0, 3, 7, 5, 1]. [2023-12-19 15:14:56,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:14:56,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:14:56,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:14:56,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:14:56,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (1/1) ... [2023-12-19 15:14:56,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:14:56,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:14:56,113 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 15:14:56,119 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 15:14:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:14:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-19 15:14:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-19 15:14:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-12-19 15:14:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-12-19 15:14:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-12-19 15:14:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:14:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:14:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:14:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 15:14:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 15:14:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 15:14:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-19 15:14:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-19 15:14:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-12-19 15:14:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-12-19 15:14:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-12-19 15:14:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:14:56,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:14:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:14:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:14:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 15:14:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 15:14:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 15:14:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:14:56,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:14:56,273 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:14:56,274 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:14:56,683 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:14:56,729 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:14:56,730 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:14:56,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:14:56 BoogieIcfgContainer [2023-12-19 15:14:56,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:14:56,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:14:56,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:14:56,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:14:56,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:14:55" (1/3) ... [2023-12-19 15:14:56,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301108ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:14:56, skipping insertion in model container [2023-12-19 15:14:56,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:14:55" (2/3) ... [2023-12-19 15:14:56,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301108ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:14:56, skipping insertion in model container [2023-12-19 15:14:56,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:14:56" (3/3) ... [2023-12-19 15:14:56,735 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-39.i [2023-12-19 15:14:56,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:14:56,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:14:56,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:14:56,778 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;@7aae6df0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:14:56,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:14:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 93 states have internal predecessors, (136), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 15:14:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:14:56,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:56,788 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:56,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:56,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1518509376, now seen corresponding path program 1 times [2023-12-19 15:14:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:56,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413158027] [2023-12-19 15:14:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:14:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:14:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:14:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:14:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:14:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:14:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:14:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:14:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:14:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:14:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:14:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:14:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:14:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:14:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:14:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:14:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413158027] [2023-12-19 15:14:57,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413158027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:57,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:57,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:14:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955052156] [2023-12-19 15:14:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:57,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:14:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:14:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:14:57,105 INFO L87 Difference]: Start difference. First operand has 111 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 93 states have internal predecessors, (136), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 15:14:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:57,155 INFO L93 Difference]: Finished difference Result 219 states and 350 transitions. [2023-12-19 15:14:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:14:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2023-12-19 15:14:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:57,165 INFO L225 Difference]: With dead ends: 219 [2023-12-19 15:14:57,166 INFO L226 Difference]: Without dead ends: 109 [2023-12-19 15:14:57,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 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 15:14:57,173 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:14:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:14:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-19 15:14:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-19 15:14:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.4395604395604396) internal successors, (131), 91 states have internal predecessors, (131), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 15:14:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 163 transitions. [2023-12-19 15:14:57,217 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 163 transitions. Word has length 123 [2023-12-19 15:14:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:57,218 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 163 transitions. [2023-12-19 15:14:57,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 15:14:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 163 transitions. [2023-12-19 15:14:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:14:57,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:57,223 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:57,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 15:14:57,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1118392932, now seen corresponding path program 1 times [2023-12-19 15:14:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413508269] [2023-12-19 15:14:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:15:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:15:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:15:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:15:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:15:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:15:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:15:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:15:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:15:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:15:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:15:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:15:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:15:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:15:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:15:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:15:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:15:00,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:15:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413508269] [2023-12-19 15:15:00,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413508269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:15:00,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:15:00,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 15:15:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123360881] [2023-12-19 15:15:00,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:15:00,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 15:15:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:15:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 15:15:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:15:00,477 INFO L87 Difference]: Start difference. First operand 109 states and 163 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:15:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:15:03,792 INFO L93 Difference]: Finished difference Result 611 states and 914 transitions. [2023-12-19 15:15:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 15:15:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-12-19 15:15:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:15:03,795 INFO L225 Difference]: With dead ends: 611 [2023-12-19 15:15:03,795 INFO L226 Difference]: Without dead ends: 503 [2023-12-19 15:15:03,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 15:15:03,797 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 999 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:15:03,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 2347 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 15:15:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-19 15:15:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 373. [2023-12-19 15:15:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 322 states have (on average 1.453416149068323) internal successors, (468), 325 states have internal predecessors, (468), 45 states have call successors, (45), 5 states have call predecessors, (45), 5 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-19 15:15:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 558 transitions. [2023-12-19 15:15:03,838 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 558 transitions. Word has length 123 [2023-12-19 15:15:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:15:03,839 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 558 transitions. [2023-12-19 15:15:03,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:15:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 558 transitions. [2023-12-19 15:15:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:15:03,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:15:03,842 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 15:15:03,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:15:03,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:15:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash 309046306, now seen corresponding path program 1 times [2023-12-19 15:15:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:15:03,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098497678] [2023-12-19 15:15:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:15:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:15:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:15:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:15:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:15:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:15:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:15:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:15:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:15:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:15:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:15:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:15:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:15:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:15:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:15:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:15:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:15:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:15:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:15:04,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:15:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098497678] [2023-12-19 15:15:04,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098497678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:15:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:15:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:15:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934754332] [2023-12-19 15:15:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:15:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:15:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:15:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:15:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:15:04,490 INFO L87 Difference]: Start difference. First operand 373 states and 558 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 11 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:15:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:15:05,046 INFO L93 Difference]: Finished difference Result 823 states and 1229 transitions. [2023-12-19 15:15:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:15:05,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 11 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-12-19 15:15:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:15:05,049 INFO L225 Difference]: With dead ends: 823 [2023-12-19 15:15:05,049 INFO L226 Difference]: Without dead ends: 542 [2023-12-19 15:15:05,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:15:05,051 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 599 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:15:05,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 563 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:15:05,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-12-19 15:15:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 400. [2023-12-19 15:15:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 348 states have (on average 1.4511494252873562) internal successors, (505), 351 states have internal predecessors, (505), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-19 15:15:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 595 transitions. [2023-12-19 15:15:05,080 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 595 transitions. Word has length 123 [2023-12-19 15:15:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:15:05,084 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 595 transitions. [2023-12-19 15:15:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 11 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:15:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 595 transitions. [2023-12-19 15:15:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:15:05,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:15:05,089 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 15:15:05,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:15:05,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:15:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1376558370, now seen corresponding path program 1 times [2023-12-19 15:15:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:15:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318395707] [2023-12-19 15:15:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:15:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:15:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:15:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:15:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:15:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:15:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:15:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:15:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:15:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:15:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:15:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:15:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:15:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:15:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:15:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:15:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:15:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:15:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 15:15:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:15:06,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318395707] [2023-12-19 15:15:06,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318395707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:15:06,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754257301] [2023-12-19 15:15:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:15:06,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:15:06,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:15:06,576 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 15:15:06,608 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 15:15:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:15:06,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-19 15:15:06,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:15:07,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:15:08,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-19 15:15:08,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-12-19 15:15:09,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-12-19 15:15:12,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 112 [2023-12-19 15:15:12,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:15:12,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 15:15:13,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:15:13,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 169 treesize of output 77 [2023-12-19 15:15:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 218 proven. 204 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-19 15:15:13,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:16:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754257301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:16:49,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:16:49,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 37] total 51 [2023-12-19 15:16:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139338241] [2023-12-19 15:16:49,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:16:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-19 15:16:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:16:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-19 15:16:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=4025, Unknown=13, NotChecked=0, Total=4830 [2023-12-19 15:16:49,435 INFO L87 Difference]: Start difference. First operand 400 states and 595 transitions. Second operand has 51 states, 45 states have (on average 2.511111111111111) internal successors, (113), 44 states have internal predecessors, (113), 12 states have call successors, (32), 9 states have call predecessors, (32), 11 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2023-12-19 15:17:09,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-19 15:17:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:17:11,638 INFO L93 Difference]: Finished difference Result 903 states and 1299 transitions. [2023-12-19 15:17:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-19 15:17:11,639 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 2.511111111111111) internal successors, (113), 44 states have internal predecessors, (113), 12 states have call successors, (32), 9 states have call predecessors, (32), 11 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 123 [2023-12-19 15:17:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:17:11,641 INFO L225 Difference]: With dead ends: 903 [2023-12-19 15:17:11,641 INFO L226 Difference]: Without dead ends: 666 [2023-12-19 15:17:11,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 105.2s TimeCoverageRelationStatistics Valid=2761, Invalid=12232, Unknown=13, NotChecked=0, Total=15006 [2023-12-19 15:17:11,647 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 1230 mSDsluCounter, 5148 mSDsCounter, 0 mSdLazyCounter, 5476 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 5386 SdHoareTripleChecker+Invalid, 5644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 5476 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:17:11,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 5386 Invalid, 5644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5476 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2023-12-19 15:17:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-19 15:17:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 520. [2023-12-19 15:17:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 447 states have (on average 1.4138702460850112) internal successors, (632), 451 states have internal predecessors, (632), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (52), 48 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 15:17:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 736 transitions. [2023-12-19 15:17:11,690 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 736 transitions. Word has length 123 [2023-12-19 15:17:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:17:11,690 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 736 transitions. [2023-12-19 15:17:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 2.511111111111111) internal successors, (113), 44 states have internal predecessors, (113), 12 states have call successors, (32), 9 states have call predecessors, (32), 11 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2023-12-19 15:17:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 736 transitions. [2023-12-19 15:17:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:17:11,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:17:11,691 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:11,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 15:17:11,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:17:11,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:17:11,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:17:11,899 INFO L85 PathProgramCache]: Analyzing trace with hash 97324578, now seen corresponding path program 1 times [2023-12-19 15:17:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:17:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859373322] [2023-12-19 15:17:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:17:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:17:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:17:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:17:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:17:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:17:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:17:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:17:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:17:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:17:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:17:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:17:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:17:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:17:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:17:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:17:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:17:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:17:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:17:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:17:12,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859373322] [2023-12-19 15:17:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859373322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:17:12,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:17:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:17:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817815562] [2023-12-19 15:17:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:17:12,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:17:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:17:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:17:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:17:12,512 INFO L87 Difference]: Start difference. First operand 520 states and 736 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:17:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:17:13,184 INFO L93 Difference]: Finished difference Result 948 states and 1345 transitions. [2023-12-19 15:17:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:17:13,186 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-12-19 15:17:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:17:13,188 INFO L225 Difference]: With dead ends: 948 [2023-12-19 15:17:13,188 INFO L226 Difference]: Without dead ends: 533 [2023-12-19 15:17:13,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:17:13,189 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 329 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:17:13,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 755 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:17:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-19 15:17:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 385. [2023-12-19 15:17:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 322 states have (on average 1.3695652173913044) internal successors, (441), 325 states have internal predecessors, (441), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:17:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 525 transitions. [2023-12-19 15:17:13,224 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 525 transitions. Word has length 123 [2023-12-19 15:17:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:17:13,224 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 525 transitions. [2023-12-19 15:17:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:17:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 525 transitions. [2023-12-19 15:17:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:17:13,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:17:13,225 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:13,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 15:17:13,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:17:13,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:17:13,226 INFO L85 PathProgramCache]: Analyzing trace with hash -712022048, now seen corresponding path program 1 times [2023-12-19 15:17:13,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:17:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652073950] [2023-12-19 15:17:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:17:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:17:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:17:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:17:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:17:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:17:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:17:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:17:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:17:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:17:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:17:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:17:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:17:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:17:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:17:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:17:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:17:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:17:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:17:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:17:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652073950] [2023-12-19 15:17:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652073950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:17:14,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:17:14,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:17:14,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637024668] [2023-12-19 15:17:14,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:17:14,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:17:14,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:17:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:17:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:17:14,502 INFO L87 Difference]: Start difference. First operand 385 states and 525 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 15:17:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:17:16,394 INFO L93 Difference]: Finished difference Result 766 states and 1068 transitions. [2023-12-19 15:17:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:17:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2023-12-19 15:17:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:17:16,396 INFO L225 Difference]: With dead ends: 766 [2023-12-19 15:17:16,396 INFO L226 Difference]: Without dead ends: 465 [2023-12-19 15:17:16,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:17:16,397 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 426 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:17:16,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1030 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 15:17:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-19 15:17:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 405. [2023-12-19 15:17:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 342 states have (on average 1.3771929824561404) internal successors, (471), 345 states have internal predecessors, (471), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:17:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 555 transitions. [2023-12-19 15:17:16,442 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 555 transitions. Word has length 123 [2023-12-19 15:17:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:17:16,443 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 555 transitions. [2023-12-19 15:17:16,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 15:17:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 555 transitions. [2023-12-19 15:17:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 15:17:16,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:17:16,444 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:16,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 15:17:16,444 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:17:16,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:17:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash 574584953, now seen corresponding path program 1 times [2023-12-19 15:17:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:17:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467978279] [2023-12-19 15:17:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:17:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:17:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:17:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:17:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:17:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:17:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:17:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:17:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:17:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:17:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:17:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:17:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:17:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:17:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:17:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:17:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:17:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:17:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:17:16,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:17:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467978279] [2023-12-19 15:17:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467978279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:17:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:17:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:17:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679647997] [2023-12-19 15:17:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:17:16,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:17:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:17:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:17:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:17:16,732 INFO L87 Difference]: Start difference. First operand 405 states and 555 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 15:17:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:17:17,155 INFO L93 Difference]: Finished difference Result 849 states and 1190 transitions. [2023-12-19 15:17:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:17:17,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2023-12-19 15:17:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:17:17,157 INFO L225 Difference]: With dead ends: 849 [2023-12-19 15:17:17,157 INFO L226 Difference]: Without dead ends: 528 [2023-12-19 15:17:17,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:17:17,158 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 596 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:17:17,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 680 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:17:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-12-19 15:17:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 411. [2023-12-19 15:17:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 347 states have (on average 1.3717579250720462) internal successors, (476), 350 states have internal predecessors, (476), 42 states have call successors, (42), 21 states have call predecessors, (42), 21 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:17:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 560 transitions. [2023-12-19 15:17:17,203 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 560 transitions. Word has length 125 [2023-12-19 15:17:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:17:17,203 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 560 transitions. [2023-12-19 15:17:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 15:17:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 560 transitions. [2023-12-19 15:17:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 15:17:17,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:17:17,204 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 15:17:17,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:17:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:17:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1418661164, now seen corresponding path program 1 times [2023-12-19 15:17:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:17:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218909162] [2023-12-19 15:17:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:17:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:17:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 15:17:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:17:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 15:17:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 15:17:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 15:17:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 15:17:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 15:17:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 15:17:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 15:17:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 15:17:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 15:17:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 15:17:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 15:17:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:17:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 15:17:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 15:17:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:17:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:17:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:17:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218909162] [2023-12-19 15:17:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218909162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:17:18,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:17:18,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 15:17:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550272027] [2023-12-19 15:17:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:17:18,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 15:17:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:17:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 15:17:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:17:18,407 INFO L87 Difference]: Start difference. First operand 411 states and 560 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:17:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:17:20,548 INFO L93 Difference]: Finished difference Result 802 states and 1112 transitions. [2023-12-19 15:17:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:17:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2023-12-19 15:17:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:17:20,550 INFO L225 Difference]: With dead ends: 802 [2023-12-19 15:17:20,550 INFO L226 Difference]: Without dead ends: 475 [2023-12-19 15:17:20,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-12-19 15:17:20,552 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 416 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:17:20,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1068 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 15:17:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-19 15:17:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 413. [2023-12-19 15:17:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 349 states have (on average 1.3696275071633237) internal successors, (478), 352 states have internal predecessors, (478), 42 states have call successors, (42), 21 states have call predecessors, (42), 21 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:17:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 562 transitions. [2023-12-19 15:17:20,606 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 562 transitions. Word has length 126 [2023-12-19 15:17:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:17:20,607 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 562 transitions. [2023-12-19 15:17:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 15:17:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 562 transitions. [2023-12-19 15:17:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 15:17:20,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:17:20,608 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:20,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 15:17:20,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:17:20,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:17:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 378015764, now seen corresponding path program 1 times [2023-12-19 15:17:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:17:20,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714812154] [2023-12-19 15:17:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:17:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:17:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat