./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db44bcd2632ea44e8f4cb990cbfca281afcea3a1e6019a6e92bc74bb29013bf8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 09:50:01,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 09:50:01,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 09:50:01,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 09:50:01,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 09:50:01,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 09:50:01,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 09:50:01,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 09:50:01,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 09:50:01,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 09:50:01,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 09:50:01,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 09:50:01,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 09:50:01,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 09:50:01,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 09:50:01,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 09:50:01,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 09:50:01,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 09:50:01,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 09:50:01,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 09:50:01,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 09:50:01,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 09:50:01,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 09:50:01,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 09:50:01,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 09:50:01,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 09:50:01,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 09:50:01,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 09:50:01,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 09:50:01,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 09:50:01,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 09:50:01,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 09:50:01,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 09:50:01,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 09:50:01,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 09:50:01,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 09:50:01,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 09:50:01,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 09:50:01,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 09:50:01,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 09:50:01,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 09:50:01,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 09:50:01,351 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 09:50:01,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 09:50:01,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 09:50:01,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 09:50:01,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 09:50:01,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 09:50:01,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 09:50:01,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 09:50:01,353 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 09:50:01,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 09:50:01,354 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 09:50:01,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 09:50:01,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 09:50:01,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 09:50:01,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 09:50:01,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 09:50:01,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 09:50:01,355 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 09:50:01,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 09:50:01,355 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 09:50:01,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 09:50:01,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 09:50:01,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 09:50:01,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 09:50:01,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:50:01,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 09:50:01,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 09:50:01,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 09:50:01,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 09:50:01,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 09:50:01,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 09:50:01,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 09:50:01,357 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 09:50:01,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 09:50:01,358 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 09:50:01,358 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db44bcd2632ea44e8f4cb990cbfca281afcea3a1e6019a6e92bc74bb29013bf8 [2023-02-15 09:50:01,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 09:50:01,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 09:50:01,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 09:50:01,605 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 09:50:01,606 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 09:50:01,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c [2023-02-15 09:50:02,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 09:50:02,680 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 09:50:02,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c [2023-02-15 09:50:02,684 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f1e101/6c82464a87274b068478648cd04fb165/FLAG9ef8f5931 [2023-02-15 09:50:02,693 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f1e101/6c82464a87274b068478648cd04fb165 [2023-02-15 09:50:02,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 09:50:02,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 09:50:02,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 09:50:02,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 09:50:02,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 09:50:02,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3954ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02, skipping insertion in model container [2023-02-15 09:50:02,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 09:50:02,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 09:50:02,829 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c[419,432] [2023-02-15 09:50:02,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:50:02,845 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 09:50:02,854 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c[419,432] [2023-02-15 09:50:02,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:50:02,875 INFO L208 MainTranslator]: Completed translation [2023-02-15 09:50:02,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02 WrapperNode [2023-02-15 09:50:02,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 09:50:02,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 09:50:02,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 09:50:02,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 09:50:02,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,898 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2023-02-15 09:50:02,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 09:50:02,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 09:50:02,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 09:50:02,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 09:50:02,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 09:50:02,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 09:50:02,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 09:50:02,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 09:50:02,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (1/1) ... [2023-02-15 09:50:02,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:50:02,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:50:02,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 09:50:02,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 09:50:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 09:50:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 09:50:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 09:50:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 09:50:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 09:50:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 09:50:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 09:50:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 09:50:03,045 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 09:50:03,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 09:50:03,171 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 09:50:03,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 09:50:03,176 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 09:50:03,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:50:03 BoogieIcfgContainer [2023-02-15 09:50:03,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 09:50:03,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 09:50:03,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 09:50:03,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 09:50:03,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:50:02" (1/3) ... [2023-02-15 09:50:03,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb2d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:50:03, skipping insertion in model container [2023-02-15 09:50:03,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:50:02" (2/3) ... [2023-02-15 09:50:03,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb2d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:50:03, skipping insertion in model container [2023-02-15 09:50:03,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:50:03" (3/3) ... [2023-02-15 09:50:03,184 INFO L112 eAbstractionObserver]: Analyzing ICFG array_doub_access_init_const.c [2023-02-15 09:50:03,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 09:50:03,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 09:50:03,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 09:50:03,244 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=LoopsAndPotentialCycles, 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;@60c57365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 09:50:03,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 09:50:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 09:50:03,252 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:50:03,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:50:03,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:50:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:50:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957391, now seen corresponding path program 1 times [2023-02-15 09:50:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:50:03,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610956434] [2023-02-15 09:50:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:03,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:50:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:50:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610956434] [2023-02-15 09:50:03,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610956434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:50:03,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:50:03,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 09:50:03,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47457662] [2023-02-15 09:50:03,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:50:03,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 09:50:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:50:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 09:50:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 09:50:03,549 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:50:03,593 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-02-15 09:50:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 09:50:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 09:50:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:50:03,601 INFO L225 Difference]: With dead ends: 28 [2023-02-15 09:50:03,602 INFO L226 Difference]: Without dead ends: 13 [2023-02-15 09:50:03,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 09:50:03,606 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:50:03,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:50:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-15 09:50:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-15 09:50:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-15 09:50:03,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-02-15 09:50:03,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:50:03,633 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-15 09:50:03,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-15 09:50:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 09:50:03,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:50:03,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:50:03,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 09:50:03,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:50:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:50:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -369319347, now seen corresponding path program 1 times [2023-02-15 09:50:03,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:50:03,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573463131] [2023-02-15 09:50:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:03,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:50:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:03,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:50:03,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573463131] [2023-02-15 09:50:03,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573463131] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:50:03,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666252518] [2023-02-15 09:50:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:03,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:03,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:50:03,735 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) [2023-02-15 09:50:03,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 09:50:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:03,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 09:50:03,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:50:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:03,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:50:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:03,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666252518] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:50:03,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:50:03,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-02-15 09:50:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711615408] [2023-02-15 09:50:03,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:50:03,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 09:50:03,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:50:03,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 09:50:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-15 09:50:03,881 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:50:03,927 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-02-15 09:50:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 09:50:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 09:50:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:50:03,928 INFO L225 Difference]: With dead ends: 25 [2023-02-15 09:50:03,928 INFO L226 Difference]: Without dead ends: 18 [2023-02-15 09:50:03,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-15 09:50:03,929 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:50:03,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:50:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-15 09:50:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-15 09:50:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-02-15 09:50:03,932 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2023-02-15 09:50:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:50:03,933 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-02-15 09:50:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-02-15 09:50:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 09:50:03,933 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:50:03,934 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:50:03,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 09:50:04,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:04,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:50:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:50:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1716192135, now seen corresponding path program 2 times [2023-02-15 09:50:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:50:04,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477215210] [2023-02-15 09:50:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:50:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:50:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477215210] [2023-02-15 09:50:04,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477215210] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:50:04,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061459378] [2023-02-15 09:50:04,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:50:04,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:04,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:50:04,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:50:04,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 09:50:04,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:50:04,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:50:04,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 09:50:04,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:50:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:04,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:50:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:04,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061459378] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:50:04,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:50:04,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-02-15 09:50:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600449138] [2023-02-15 09:50:04,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:50:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 09:50:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:50:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 09:50:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2023-02-15 09:50:04,450 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:50:04,481 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-02-15 09:50:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 09:50:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 09:50:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:50:04,482 INFO L225 Difference]: With dead ends: 37 [2023-02-15 09:50:04,482 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 09:50:04,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2023-02-15 09:50:04,483 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:50:04,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:50:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 09:50:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-15 09:50:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-02-15 09:50:04,487 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 15 [2023-02-15 09:50:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:50:04,487 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-02-15 09:50:04,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-02-15 09:50:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 09:50:04,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:50:04,488 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:50:04,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 09:50:04,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 09:50:04,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:50:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:50:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180091, now seen corresponding path program 3 times [2023-02-15 09:50:04,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:50:04,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552994591] [2023-02-15 09:50:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:04,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:50:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:04,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:50:04,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552994591] [2023-02-15 09:50:04,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552994591] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:50:04,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751015270] [2023-02-15 09:50:04,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:50:04,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:04,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:50:04,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:50:04,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 09:50:05,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 09:50:05,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:50:05,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 09:50:05,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:50:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:05,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:50:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:05,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751015270] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:50:05,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:50:05,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2023-02-15 09:50:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786000167] [2023-02-15 09:50:05,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:50:05,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-15 09:50:05,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:50:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-15 09:50:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 09:50:05,460 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:50:05,527 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-02-15 09:50:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 09:50:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 09:50:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:50:05,528 INFO L225 Difference]: With dead ends: 61 [2023-02-15 09:50:05,528 INFO L226 Difference]: Without dead ends: 54 [2023-02-15 09:50:05,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 09:50:05,529 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:50:05,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:50:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-15 09:50:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-02-15 09:50:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2023-02-15 09:50:05,534 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 27 [2023-02-15 09:50:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:50:05,535 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2023-02-15 09:50:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2023-02-15 09:50:05,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-15 09:50:05,536 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:50:05,536 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:50:05,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 09:50:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:05,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:50:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:50:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1458393443, now seen corresponding path program 4 times [2023-02-15 09:50:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:50:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299373206] [2023-02-15 09:50:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:50:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:06,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:50:06,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299373206] [2023-02-15 09:50:06,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299373206] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:50:06,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985627818] [2023-02-15 09:50:06,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 09:50:06,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:50:06,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:50:06,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 09:50:10,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 09:50:10,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:50:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 09:50:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:50:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:10,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:50:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:11,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985627818] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:50:11,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:50:11,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2023-02-15 09:50:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432270917] [2023-02-15 09:50:11,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:50:11,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-02-15 09:50:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:50:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-02-15 09:50:11,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2023-02-15 09:50:11,581 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:50:11,744 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2023-02-15 09:50:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-15 09:50:11,745 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-02-15 09:50:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:50:11,749 INFO L225 Difference]: With dead ends: 109 [2023-02-15 09:50:11,749 INFO L226 Difference]: Without dead ends: 102 [2023-02-15 09:50:11,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2023-02-15 09:50:11,751 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:50:11,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:50:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-02-15 09:50:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-02-15 09:50:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2023-02-15 09:50:11,769 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 51 [2023-02-15 09:50:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:50:11,769 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2023-02-15 09:50:11,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:50:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2023-02-15 09:50:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-02-15 09:50:11,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:50:11,772 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:50:11,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 09:50:11,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:11,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:50:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:50:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash 546272563, now seen corresponding path program 5 times [2023-02-15 09:50:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:50:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150597992] [2023-02-15 09:50:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:50:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:50:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:50:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:50:13,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:50:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150597992] [2023-02-15 09:50:13,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150597992] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:50:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95347515] [2023-02-15 09:50:13,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 09:50:13,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:50:13,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:50:13,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:50:13,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process