./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/recursive/recHanoi01.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 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:55:42,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:55:42,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:55:42,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:55:42,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:55:42,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:55:42,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:55:42,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:55:42,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:55:42,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:55:42,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:55:42,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:55:42,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:55:42,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:55:42,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:55:42,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:55:42,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:55:42,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:55:42,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:55:42,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:55:42,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:55:42,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:55:42,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:55:42,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:55:42,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:55:42,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:55:42,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:55:42,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:55:42,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:55:42,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:55:42,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:55:42,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:55:42,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:55:43,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:55:43,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:55:43,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:55:43,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:55:43,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:55:43,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:55:43,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:55:43,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:55:43,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:55:43,025 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:55:43,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:55:43,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:55:43,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:55:43,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:55:43,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:55:43,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:55:43,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:55:43,027 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:55:43,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:55:43,028 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:55:43,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:55:43,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:55:43,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:55:43,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:55:43,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:55:43,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:55:43,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:55:43,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:55:43,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:55:43,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:55:43,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:55:43,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:55:43,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:55:43,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:55:43,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:55:43,031 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:55:43,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:55:43,032 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:55:43,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2023-02-16 02:55:43,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:55:43,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:55:43,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:55:43,237 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:55:43,237 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:55:43,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi01.c [2023-02-16 02:55:44,203 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:55:44,342 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:55:44,343 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.c [2023-02-16 02:55:44,346 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9e3c66c/f5020679bee7460eb4b2615d503f847b/FLAG7360283f1 [2023-02-16 02:55:44,355 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9e3c66c/f5020679bee7460eb4b2615d503f847b [2023-02-16 02:55:44,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:55:44,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:55:44,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:55:44,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:55:44,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:55:44,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b34f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44, skipping insertion in model container [2023-02-16 02:55:44,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:55:44,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:55:44,476 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/recursive/recHanoi01.c[1213,1226] [2023-02-16 02:55:44,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:55:44,485 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:55:44,496 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/recursive/recHanoi01.c[1213,1226] [2023-02-16 02:55:44,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:55:44,507 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:55:44,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44 WrapperNode [2023-02-16 02:55:44,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:55:44,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:55:44,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:55:44,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:55:44,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,529 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-02-16 02:55:44,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:55:44,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:55:44,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:55:44,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:55:44,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,556 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:55:44,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:55:44,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:55:44,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:55:44,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (1/1) ... [2023-02-16 02:55:44,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:55:44,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:44,589 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) [2023-02-16 02:55:44,597 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 [2023-02-16 02:55:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:55:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2023-02-16 02:55:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2023-02-16 02:55:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-02-16 02:55:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-02-16 02:55:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:55:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:55:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:55:44,670 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:55:44,672 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:55:44,838 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:55:44,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:55:44,855 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 02:55:44,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:44 BoogieIcfgContainer [2023-02-16 02:55:44,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:55:44,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:55:44,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:55:44,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:55:44,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:55:44" (1/3) ... [2023-02-16 02:55:44,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df2c1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:55:44, skipping insertion in model container [2023-02-16 02:55:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:44" (2/3) ... [2023-02-16 02:55:44,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df2c1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:55:44, skipping insertion in model container [2023-02-16 02:55:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:44" (3/3) ... [2023-02-16 02:55:44,863 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2023-02-16 02:55:44,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:55:44,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:55:44,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:55:44,931 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;@28f7ba06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:55:44,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:55:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 02:55:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 02:55:44,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:44,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:44,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash -424312916, now seen corresponding path program 1 times [2023-02-16 02:55:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:44,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484594999] [2023-02-16 02:55:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 02:55:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:55:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:45,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484594999] [2023-02-16 02:55:45,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484594999] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:45,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:45,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:55:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629329643] [2023-02-16 02:55:45,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:55:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:55:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:55:45,263 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:55:45,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:45,379 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-02-16 02:55:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:55:45,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-16 02:55:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:45,385 INFO L225 Difference]: With dead ends: 43 [2023-02-16 02:55:45,386 INFO L226 Difference]: Without dead ends: 23 [2023-02-16 02:55:45,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:55:45,390 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:45,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 58 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-16 02:55:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-16 02:55:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-16 02:55:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-16 02:55:45,424 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2023-02-16 02:55:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:45,424 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-16 02:55:45,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:55:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-16 02:55:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 02:55:45,426 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:45,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:45,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 02:55:45,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2103389423, now seen corresponding path program 1 times [2023-02-16 02:55:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:45,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897364750] [2023-02-16 02:55:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:45,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 02:55:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:55:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:45,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897364750] [2023-02-16 02:55:45,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897364750] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:45,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426024204] [2023-02-16 02:55:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:45,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:45,903 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) [2023-02-16 02:55:45,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:55:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 02:55:45,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 02:55:46,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:55:46,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426024204] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:46,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:46,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2023-02-16 02:55:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467229540] [2023-02-16 02:55:46,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:46,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-16 02:55:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-16 02:55:46,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-02-16 02:55:46,367 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-02-16 02:55:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:46,701 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-02-16 02:55:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 02:55:46,701 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 26 [2023-02-16 02:55:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:46,703 INFO L225 Difference]: With dead ends: 74 [2023-02-16 02:55:46,703 INFO L226 Difference]: Without dead ends: 68 [2023-02-16 02:55:46,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-02-16 02:55:46,705 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 68 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:46,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 104 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-16 02:55:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2023-02-16 02:55:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 34 states have internal predecessors, (36), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (33), 16 states have call predecessors, (33), 14 states have call successors, (33) [2023-02-16 02:55:46,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2023-02-16 02:55:46,739 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 26 [2023-02-16 02:55:46,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:46,739 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2023-02-16 02:55:46,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-02-16 02:55:46,739 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2023-02-16 02:55:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 02:55:46,741 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:46,741 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:46,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:46,947 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 [2023-02-16 02:55:46,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:46,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash 365687158, now seen corresponding path program 2 times [2023-02-16 02:55:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:46,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853158014] [2023-02-16 02:55:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:46,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-16 02:55:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-16 02:55:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:47,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853158014] [2023-02-16 02:55:47,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853158014] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272802958] [2023-02-16 02:55:47,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:55:47,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:47,131 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) [2023-02-16 02:55:47,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:55:47,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:55:47,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:47,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 02:55:47,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 02:55:47,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-16 02:55:47,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272802958] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:47,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:47,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 18 [2023-02-16 02:55:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205680914] [2023-02-16 02:55:47,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:47,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 02:55:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 02:55:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-16 02:55:47,575 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-02-16 02:55:47,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:47,791 INFO L93 Difference]: Finished difference Result 108 states and 169 transitions. [2023-02-16 02:55:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 02:55:47,792 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 36 [2023-02-16 02:55:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:47,793 INFO L225 Difference]: With dead ends: 108 [2023-02-16 02:55:47,793 INFO L226 Difference]: Without dead ends: 74 [2023-02-16 02:55:47,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-02-16 02:55:47,795 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:47,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 125 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-16 02:55:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2023-02-16 02:55:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2023-02-16 02:55:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2023-02-16 02:55:47,803 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 36 [2023-02-16 02:55:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:47,803 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2023-02-16 02:55:47,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-02-16 02:55:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2023-02-16 02:55:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 02:55:47,804 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:47,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:47,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:48,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-16 02:55:48,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:48,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -787037173, now seen corresponding path program 1 times [2023-02-16 02:55:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:48,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493110845] [2023-02-16 02:55:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:48,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 02:55:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:55:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:48,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493110845] [2023-02-16 02:55:48,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493110845] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:48,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031326254] [2023-02-16 02:55:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:48,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:48,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:48,111 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) [2023-02-16 02:55:48,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:55:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 02:55:48,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:55:48,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:55:48,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031326254] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:48,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:48,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 20 [2023-02-16 02:55:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592468104] [2023-02-16 02:55:48,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 02:55:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 02:55:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-02-16 02:55:48,399 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:55:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:48,526 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2023-02-16 02:55:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 02:55:48,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) Word has length 32 [2023-02-16 02:55:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:48,531 INFO L225 Difference]: With dead ends: 62 [2023-02-16 02:55:48,531 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 02:55:48,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2023-02-16 02:55:48,534 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:48,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 81 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 02:55:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2023-02-16 02:55:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-02-16 02:55:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2023-02-16 02:55:48,563 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 32 [2023-02-16 02:55:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:48,563 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2023-02-16 02:55:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:55:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-02-16 02:55:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-16 02:55:48,564 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:48,564 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:48,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:48,771 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 [2023-02-16 02:55:48,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash 464974891, now seen corresponding path program 2 times [2023-02-16 02:55:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763083427] [2023-02-16 02:55:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:55:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-16 02:55:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-02-16 02:55:49,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763083427] [2023-02-16 02:55:49,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763083427] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:49,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327059297] [2023-02-16 02:55:49,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:55:49,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:49,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:49,205 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) [2023-02-16 02:55:49,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:55:49,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:55:49,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:49,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-16 02:55:49,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-16 02:55:49,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-16 02:55:49,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327059297] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:49,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:49,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 18] total 31 [2023-02-16 02:55:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047160859] [2023-02-16 02:55:49,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:49,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-16 02:55:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:49,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-16 02:55:49,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2023-02-16 02:55:49,968 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2023-02-16 02:55:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:50,925 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2023-02-16 02:55:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 02:55:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) Word has length 52 [2023-02-16 02:55:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:50,926 INFO L225 Difference]: With dead ends: 101 [2023-02-16 02:55:50,926 INFO L226 Difference]: Without dead ends: 97 [2023-02-16 02:55:50,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 96 SyntacticMatches, 14 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=2461, Unknown=0, NotChecked=0, Total=2862 [2023-02-16 02:55:50,928 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 98 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:50,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 168 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 02:55:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-16 02:55:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2023-02-16 02:55:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 18 states have call successors, (18), 10 states have call predecessors, (18), 16 states have return successors, (44), 24 states have call predecessors, (44), 18 states have call successors, (44) [2023-02-16 02:55:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2023-02-16 02:55:50,938 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 52 [2023-02-16 02:55:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:50,938 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2023-02-16 02:55:50,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2023-02-16 02:55:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2023-02-16 02:55:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-16 02:55:50,940 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:50,940 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:50,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:51,145 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 [2023-02-16 02:55:51,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1359329167, now seen corresponding path program 3 times [2023-02-16 02:55:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:51,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735084928] [2023-02-16 02:55:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:55:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-16 02:55:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-16 02:55:51,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:51,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735084928] [2023-02-16 02:55:51,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735084928] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:51,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356857713] [2023-02-16 02:55:51,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:55:51,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:51,309 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) [2023-02-16 02:55:51,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:55:51,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 02:55:51,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:51,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 02:55:51,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-16 02:55:51,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-16 02:55:51,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356857713] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:51,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:51,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-02-16 02:55:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834604942] [2023-02-16 02:55:51,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:51,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 02:55:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 02:55:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:55:51,836 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2023-02-16 02:55:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:52,069 INFO L93 Difference]: Finished difference Result 142 states and 220 transitions. [2023-02-16 02:55:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 02:55:52,069 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 58 [2023-02-16 02:55:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:52,070 INFO L225 Difference]: With dead ends: 142 [2023-02-16 02:55:52,070 INFO L226 Difference]: Without dead ends: 76 [2023-02-16 02:55:52,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 02:55:52,072 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:52,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 96 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-16 02:55:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2023-02-16 02:55:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (35), 21 states have call predecessors, (35), 17 states have call successors, (35) [2023-02-16 02:55:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2023-02-16 02:55:52,079 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 58 [2023-02-16 02:55:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:52,080 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2023-02-16 02:55:52,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2023-02-16 02:55:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2023-02-16 02:55:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-16 02:55:52,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:52,082 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:52,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:52,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:52,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 296645163, now seen corresponding path program 4 times [2023-02-16 02:55:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139564894] [2023-02-16 02:55:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:55:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:55:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:55:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-16 02:55:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 42 proven. 135 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-02-16 02:55:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139564894] [2023-02-16 02:55:52,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139564894] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550850927] [2023-02-16 02:55:52,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:55:52,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:52,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:52,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:55:52,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:55:52,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:52,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 02:55:52,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 125 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-02-16 02:55:52,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 135 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-02-16 02:55:53,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550850927] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:53,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:53,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-02-16 02:55:53,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123585799] [2023-02-16 02:55:53,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:53,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 02:55:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 02:55:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:55:53,218 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-16 02:55:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:53,524 INFO L93 Difference]: Finished difference Result 117 states and 174 transitions. [2023-02-16 02:55:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 02:55:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) Word has length 92 [2023-02-16 02:55:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:53,525 INFO L225 Difference]: With dead ends: 117 [2023-02-16 02:55:53,526 INFO L226 Difference]: Without dead ends: 71 [2023-02-16 02:55:53,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 194 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2023-02-16 02:55:53,527 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:53,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 104 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-16 02:55:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-16 02:55:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (32), 19 states have call predecessors, (32), 17 states have call successors, (32) [2023-02-16 02:55:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2023-02-16 02:55:53,534 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 92 [2023-02-16 02:55:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:53,534 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2023-02-16 02:55:53,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-16 02:55:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2023-02-16 02:55:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-16 02:55:53,535 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:53,535 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:53,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:53,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:53,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:53,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1624983153, now seen corresponding path program 5 times [2023-02-16 02:55:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:53,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290765391] [2023-02-16 02:55:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:53,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:55:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:55:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:55:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:55:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-16 02:55:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 161 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-02-16 02:55:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:54,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290765391] [2023-02-16 02:55:54,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290765391] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:54,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863951791] [2023-02-16 02:55:54,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 02:55:54,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:54,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:54,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:55:54,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-02-16 02:55:54,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:54,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 91 conjunts are in the unsatisfiable core [2023-02-16 02:55:54,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-02-16 02:55:55,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-02-16 02:55:56,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863951791] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:56,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:56,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 32] total 51 [2023-02-16 02:55:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350190907] [2023-02-16 02:55:56,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:56,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-16 02:55:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-16 02:55:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2365, Unknown=0, NotChecked=0, Total=2550 [2023-02-16 02:55:56,332 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2023-02-16 02:56:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:01,501 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2023-02-16 02:56:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-16 02:56:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) Word has length 98 [2023-02-16 02:56:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:01,503 INFO L225 Difference]: With dead ends: 222 [2023-02-16 02:56:01,503 INFO L226 Difference]: Without dead ends: 218 [2023-02-16 02:56:01,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 188 SyntacticMatches, 26 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3331 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1686, Invalid=11196, Unknown=0, NotChecked=0, Total=12882 [2023-02-16 02:56:01,506 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 367 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:01,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 568 Invalid, 4263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-16 02:56:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-16 02:56:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 179. [2023-02-16 02:56:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 97 states have internal predecessors, (105), 47 states have call successors, (47), 27 states have call predecessors, (47), 33 states have return successors, (104), 54 states have call predecessors, (104), 47 states have call successors, (104) [2023-02-16 02:56:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 256 transitions. [2023-02-16 02:56:01,525 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 256 transitions. Word has length 98 [2023-02-16 02:56:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:01,526 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 256 transitions. [2023-02-16 02:56:01,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2023-02-16 02:56:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 256 transitions. [2023-02-16 02:56:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-16 02:56:01,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:01,528 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:01,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:01,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:01,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250389, now seen corresponding path program 6 times [2023-02-16 02:56:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:01,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643638485] [2023-02-16 02:56:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-16 02:56:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-02-16 02:56:02,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:02,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643638485] [2023-02-16 02:56:02,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643638485] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:02,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923170979] [2023-02-16 02:56:02,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 02:56:02,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:02,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:02,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:02,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 02:56:02,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-16 02:56:02,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:02,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 02:56:02,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 72 proven. 113 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-02-16 02:56:02,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 72 proven. 132 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-02-16 02:56:02,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923170979] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:02,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:02,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-02-16 02:56:02,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431804411] [2023-02-16 02:56:02,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:02,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 02:56:02,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:02,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 02:56:02,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2023-02-16 02:56:02,962 INFO L87 Difference]: Start difference. First operand 179 states and 256 transitions. Second operand has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2023-02-16 02:56:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:03,280 INFO L93 Difference]: Finished difference Result 291 states and 470 transitions. [2023-02-16 02:56:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 02:56:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) Word has length 104 [2023-02-16 02:56:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:03,282 INFO L225 Difference]: With dead ends: 291 [2023-02-16 02:56:03,282 INFO L226 Difference]: Without dead ends: 181 [2023-02-16 02:56:03,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 216 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2023-02-16 02:56:03,284 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:03,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 115 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:56:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-16 02:56:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2023-02-16 02:56:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 45 states have call successors, (45), 22 states have call predecessors, (45), 29 states have return successors, (88), 52 states have call predecessors, (88), 45 states have call successors, (88) [2023-02-16 02:56:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2023-02-16 02:56:03,316 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 104 [2023-02-16 02:56:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:03,316 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2023-02-16 02:56:03,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2023-02-16 02:56:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2023-02-16 02:56:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-02-16 02:56:03,318 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:03,318 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:03,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-16 02:56:03,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-16 02:56:03,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:03,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1313628785, now seen corresponding path program 7 times [2023-02-16 02:56:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:03,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878973704] [2023-02-16 02:56:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-02-16 02:56:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 229 proven. 262 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-02-16 02:56:03,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:03,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878973704] [2023-02-16 02:56:03,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878973704] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:03,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733527504] [2023-02-16 02:56:03,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 02:56:03,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:03,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:03,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:03,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 02:56:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:04,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 02:56:04,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 268 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2023-02-16 02:56:04,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 281 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-02-16 02:56:04,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733527504] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:04,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:04,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 23 [2023-02-16 02:56:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676642075] [2023-02-16 02:56:04,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 02:56:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 02:56:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:56:04,950 INFO L87 Difference]: Start difference. First operand 157 states and 220 transitions. Second operand has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2023-02-16 02:56:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:05,239 INFO L93 Difference]: Finished difference Result 248 states and 371 transitions. [2023-02-16 02:56:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-16 02:56:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) Word has length 138 [2023-02-16 02:56:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:05,241 INFO L225 Difference]: With dead ends: 248 [2023-02-16 02:56:05,241 INFO L226 Difference]: Without dead ends: 178 [2023-02-16 02:56:05,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 308 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2023-02-16 02:56:05,243 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:05,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 115 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:56:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-16 02:56:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2023-02-16 02:56:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (80), 49 states have call predecessors, (80), 45 states have call successors, (80) [2023-02-16 02:56:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2023-02-16 02:56:05,257 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 138 [2023-02-16 02:56:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:05,257 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2023-02-16 02:56:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2023-02-16 02:56:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2023-02-16 02:56:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-02-16 02:56:05,259 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:05,259 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:05,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 02:56:05,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 149752433, now seen corresponding path program 8 times [2023-02-16 02:56:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:05,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459201608] [2023-02-16 02:56:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-16 02:56:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2023-02-16 02:56:05,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459201608] [2023-02-16 02:56:05,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459201608] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:05,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482402930] [2023-02-16 02:56:05,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:56:05,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:05,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:05,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:05,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 02:56:06,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:56:06,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:06,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 02:56:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 396 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2023-02-16 02:56:06,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 416 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2023-02-16 02:56:07,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482402930] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:07,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:07,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-02-16 02:56:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786931110] [2023-02-16 02:56:07,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:07,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 02:56:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 02:56:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2023-02-16 02:56:07,057 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2023-02-16 02:56:07,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:07,452 INFO L93 Difference]: Finished difference Result 174 states and 237 transitions. [2023-02-16 02:56:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-16 02:56:07,452 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) Word has length 178 [2023-02-16 02:56:07,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:07,454 INFO L225 Difference]: With dead ends: 174 [2023-02-16 02:56:07,454 INFO L226 Difference]: Without dead ends: 170 [2023-02-16 02:56:07,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 394 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2023-02-16 02:56:07,455 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:07,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:56:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-16 02:56:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2023-02-16 02:56:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 45 states have call successors, (45), 23 states have call predecessors, (45), 28 states have return successors, (81), 50 states have call predecessors, (81), 45 states have call successors, (81) [2023-02-16 02:56:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2023-02-16 02:56:07,467 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 178 [2023-02-16 02:56:07,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:07,468 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2023-02-16 02:56:07,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2023-02-16 02:56:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2023-02-16 02:56:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-02-16 02:56:07,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:07,470 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:07,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:07,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 02:56:07,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2072776725, now seen corresponding path program 9 times [2023-02-16 02:56:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:07,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031143961] [2023-02-16 02:56:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-16 02:56:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 44 proven. 705 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2023-02-16 02:56:09,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031143961] [2023-02-16 02:56:09,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031143961] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197629512] [2023-02-16 02:56:09,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:56:09,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:09,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:09,882 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:09,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 02:56:10,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-16 02:56:10,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:10,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 175 conjunts are in the unsatisfiable core [2023-02-16 02:56:10,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2023-02-16 02:56:10,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-16 02:56:14,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197629512] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:14,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:14,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 58] total 83 [2023-02-16 02:56:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94380664] [2023-02-16 02:56:14,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:14,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-02-16 02:56:14,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:14,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-02-16 02:56:14,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6505, Unknown=0, NotChecked=0, Total=6806 [2023-02-16 02:56:14,291 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2023-02-16 02:56:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:40,445 INFO L93 Difference]: Finished difference Result 524 states and 792 transitions. [2023-02-16 02:56:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-02-16 02:56:40,446 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) Word has length 184 [2023-02-16 02:56:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:40,449 INFO L225 Difference]: With dead ends: 524 [2023-02-16 02:56:40,449 INFO L226 Difference]: Without dead ends: 520 [2023-02-16 02:56:40,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 357 SyntacticMatches, 57 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16707 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=7719, Invalid=49641, Unknown=0, NotChecked=0, Total=57360 [2023-02-16 02:56:40,456 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1407 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 10266 mSolverCounterSat, 4628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 14894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4628 IncrementalHoareTripleChecker+Valid, 10266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:40,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1329 Invalid, 14894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4628 Valid, 10266 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-16 02:56:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-02-16 02:56:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 437. [2023-02-16 02:56:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 236 states have (on average 1.0593220338983051) internal successors, (250), 232 states have internal predecessors, (250), 125 states have call successors, (125), 74 states have call predecessors, (125), 75 states have return successors, (256), 130 states have call predecessors, (256), 125 states have call successors, (256) [2023-02-16 02:56:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 631 transitions. [2023-02-16 02:56:40,496 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 631 transitions. Word has length 184 [2023-02-16 02:56:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:40,496 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 631 transitions. [2023-02-16 02:56:40,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2023-02-16 02:56:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 631 transitions. [2023-02-16 02:56:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-02-16 02:56:40,500 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:40,500 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:40,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 02:56:40,705 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1729878095, now seen corresponding path program 10 times [2023-02-16 02:56:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:40,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418514125] [2023-02-16 02:56:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-16 02:56:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 107 proven. 431 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2023-02-16 02:56:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:41,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418514125] [2023-02-16 02:56:41,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418514125] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:41,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879800272] [2023-02-16 02:56:41,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:56:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:41,208 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:41,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 02:56:41,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:56:41,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 02:56:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 415 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2023-02-16 02:56:41,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 447 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2023-02-16 02:56:42,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879800272] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:42,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:42,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-02-16 02:56:42,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041981255] [2023-02-16 02:56:42,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:42,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-16 02:56:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:42,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-16 02:56:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2023-02-16 02:56:42,661 INFO L87 Difference]: Start difference. First operand 437 states and 631 transitions. Second operand has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2023-02-16 02:56:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:43,117 INFO L93 Difference]: Finished difference Result 683 states and 1088 transitions. [2023-02-16 02:56:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-16 02:56:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) Word has length 190 [2023-02-16 02:56:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:43,122 INFO L225 Difference]: With dead ends: 683 [2023-02-16 02:56:43,122 INFO L226 Difference]: Without dead ends: 467 [2023-02-16 02:56:43,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 416 SyntacticMatches, 17 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=2253, Unknown=0, NotChecked=0, Total=2756 [2023-02-16 02:56:43,124 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:43,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 132 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:56:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-16 02:56:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 394. [2023-02-16 02:56:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 201 states have (on average 1.0597014925373134) internal successors, (213), 201 states have internal predecessors, (213), 119 states have call successors, (119), 59 states have call predecessors, (119), 73 states have return successors, (219), 133 states have call predecessors, (219), 119 states have call successors, (219) [2023-02-16 02:56:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 551 transitions. [2023-02-16 02:56:43,167 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 551 transitions. Word has length 190 [2023-02-16 02:56:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:43,167 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 551 transitions. [2023-02-16 02:56:43,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2023-02-16 02:56:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 551 transitions. [2023-02-16 02:56:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-02-16 02:56:43,176 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:43,176 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:43,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 02:56:43,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1910939669, now seen corresponding path program 11 times [2023-02-16 02:56:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:43,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534654780] [2023-02-16 02:56:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-16 02:56:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-02-16 02:56:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 640 proven. 804 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2023-02-16 02:56:44,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534654780] [2023-02-16 02:56:44,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534654780] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719640305] [2023-02-16 02:56:44,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 02:56:44,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:44,165 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:44,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 02:56:44,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2023-02-16 02:56:44,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:44,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-16 02:56:44,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 868 proven. 595 refuted. 0 times theorem prover too weak. 3397 trivial. 0 not checked. [2023-02-16 02:56:44,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 870 proven. 619 refuted. 0 times theorem prover too weak. 3371 trivial. 0 not checked. [2023-02-16 02:56:45,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719640305] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:45,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:45,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 27 [2023-02-16 02:56:45,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910683795] [2023-02-16 02:56:45,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:45,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-16 02:56:45,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:45,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-16 02:56:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-02-16 02:56:45,820 INFO L87 Difference]: Start difference. First operand 394 states and 551 transitions. Second operand has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) [2023-02-16 02:56:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:46,237 INFO L93 Difference]: Finished difference Result 570 states and 838 transitions. [2023-02-16 02:56:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 02:56:46,242 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) Word has length 264 [2023-02-16 02:56:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:46,245 INFO L225 Difference]: With dead ends: 570 [2023-02-16 02:56:46,245 INFO L226 Difference]: Without dead ends: 464 [2023-02-16 02:56:46,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 606 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=644, Invalid=2008, Unknown=0, NotChecked=0, Total=2652 [2023-02-16 02:56:46,246 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 69 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:46,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 150 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:56:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-02-16 02:56:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 391. [2023-02-16 02:56:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 119 states have call successors, (119), 60 states have call predecessors, (119), 71 states have return successors, (203), 130 states have call predecessors, (203), 119 states have call successors, (203) [2023-02-16 02:56:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 534 transitions. [2023-02-16 02:56:46,283 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 534 transitions. Word has length 264 [2023-02-16 02:56:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:46,284 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 534 transitions. [2023-02-16 02:56:46,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) [2023-02-16 02:56:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 534 transitions. [2023-02-16 02:56:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-02-16 02:56:46,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:46,287 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:46,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:46,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-16 02:56:46,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1351583765, now seen corresponding path program 12 times [2023-02-16 02:56:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:46,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617256355] [2023-02-16 02:56:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-16 02:56:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-02-16 02:56:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 244 proven. 1105 refuted. 0 times theorem prover too weak. 7423 trivial. 0 not checked. [2023-02-16 02:56:47,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:47,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617256355] [2023-02-16 02:56:47,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617256355] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:47,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689458596] [2023-02-16 02:56:47,383 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 02:56:47,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:47,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:47,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 02:56:47,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-02-16 02:56:47,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:47,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 02:56:47,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 475 proven. 865 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2023-02-16 02:56:47,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 479 proven. 896 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2023-02-16 02:56:49,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689458596] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:49,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:49,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-02-16 02:56:49,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838696922] [2023-02-16 02:56:49,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:49,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-16 02:56:49,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:49,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-16 02:56:49,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2023-02-16 02:56:49,228 INFO L87 Difference]: Start difference. First operand 391 states and 534 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2023-02-16 02:56:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:49,738 INFO L93 Difference]: Finished difference Result 427 states and 577 transitions. [2023-02-16 02:56:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 02:56:49,739 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) Word has length 344 [2023-02-16 02:56:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:49,741 INFO L225 Difference]: With dead ends: 427 [2023-02-16 02:56:49,741 INFO L226 Difference]: Without dead ends: 423 [2023-02-16 02:56:49,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 786 SyntacticMatches, 17 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=509, Invalid=2353, Unknown=0, NotChecked=0, Total=2862 [2023-02-16 02:56:49,742 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:49,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 192 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 02:56:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-02-16 02:56:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 394. [2023-02-16 02:56:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 202 states have (on average 1.0594059405940595) internal successors, (214), 202 states have internal predecessors, (214), 119 states have call successors, (119), 60 states have call predecessors, (119), 72 states have return successors, (204), 131 states have call predecessors, (204), 119 states have call successors, (204) [2023-02-16 02:56:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 537 transitions. [2023-02-16 02:56:49,778 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 537 transitions. Word has length 344 [2023-02-16 02:56:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:49,779 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 537 transitions. [2023-02-16 02:56:49,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2023-02-16 02:56:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 537 transitions. [2023-02-16 02:56:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-02-16 02:56:49,781 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:49,781 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:49,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-16 02:56:49,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:49,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash -430264399, now seen corresponding path program 13 times [2023-02-16 02:56:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:49,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869733634] [2023-02-16 02:56:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-16 02:56:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-16 02:56:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:55,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 02:56:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 02:56:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 02:56:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-02-16 02:56:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:56:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 92 proven. 2940 refuted. 0 times theorem prover too weak. 5762 trivial. 0 not checked. [2023-02-16 02:56:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:56,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869733634] [2023-02-16 02:56:56,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869733634] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:56,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982020579] [2023-02-16 02:56:56,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 02:56:56,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:56,357 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:56:56,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 02:56:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:56,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 339 conjunts are in the unsatisfiable core [2023-02-16 02:56:56,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2023-02-16 02:56:57,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:57:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 8644 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-02-16 02:57:06,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982020579] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:57:06,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:57:06,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 108] total 139 [2023-02-16 02:57:06,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526562380] [2023-02-16 02:57:06,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:57:06,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-02-16 02:57:06,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:57:06,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-02-16 02:57:06,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=18689, Unknown=0, NotChecked=0, Total=19182 [2023-02-16 02:57:06,334 INFO L87 Difference]: Start difference. First operand 394 states and 537 transitions. Second operand has 139 states, 104 states have (on average 1.7211538461538463) internal successors, (179), 106 states have internal predecessors, (179), 54 states have call successors, (76), 35 states have call predecessors, (76), 68 states have return successors, (91), 70 states have call predecessors, (91), 54 states have call successors, (91)