./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 19:33:59,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 19:33:59,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 19:33:59,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 19:33:59,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 19:33:59,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 19:33:59,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 19:33:59,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 19:33:59,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 19:33:59,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 19:33:59,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 19:33:59,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 19:33:59,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 19:33:59,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 19:33:59,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 19:33:59,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 19:33:59,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 19:33:59,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 19:33:59,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 19:33:59,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 19:33:59,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 19:33:59,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 19:33:59,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 19:33:59,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 19:33:59,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 19:33:59,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 19:33:59,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 19:33:59,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 19:33:59,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 19:33:59,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 19:33:59,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 19:33:59,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 19:33:59,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 19:33:59,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 19:33:59,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 19:33:59,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 19:33:59,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 19:33:59,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 19:33:59,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 19:33:59,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 19:33:59,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 19:33:59,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 19:33:59,964 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 19:33:59,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 19:33:59,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 19:33:59,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 19:33:59,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 19:33:59,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 19:33:59,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 19:33:59,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 19:33:59,966 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 19:33:59,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 19:33:59,967 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 19:33:59,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 19:33:59,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 19:33:59,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 19:33:59,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 19:33:59,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 19:33:59,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 19:33:59,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:33:59,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 19:33:59,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 19:33:59,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 19:33:59,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 19:33:59,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 19:33:59,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 19:33:59,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 19:33:59,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 19:33:59,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 19:33:59,971 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 19:33:59,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc [2023-02-18 19:34:00,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 19:34:00,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 19:34:00,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 19:34:00,168 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 19:34:00,168 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 19:34:00,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2023-02-18 19:34:01,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 19:34:01,287 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 19:34:01,287 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2023-02-18 19:34:01,291 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e2ab3f4/299272a2546e41c4849fa4c0b8da5f42/FLAGe8e0f089c [2023-02-18 19:34:01,714 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e2ab3f4/299272a2546e41c4849fa4c0b8da5f42 [2023-02-18 19:34:01,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 19:34:01,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 19:34:01,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 19:34:01,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 19:34:01,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 19:34:01,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5229d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01, skipping insertion in model container [2023-02-18 19:34:01,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 19:34:01,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 19:34:01,826 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/EvenOdd01-1.c[975,988] [2023-02-18 19:34:01,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:34:01,838 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 19:34:01,848 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/EvenOdd01-1.c[975,988] [2023-02-18 19:34:01,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:34:01,858 INFO L208 MainTranslator]: Completed translation [2023-02-18 19:34:01,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01 WrapperNode [2023-02-18 19:34:01,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 19:34:01,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 19:34:01,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 19:34:01,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 19:34:01,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,881 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-02-18 19:34:01,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 19:34:01,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 19:34:01,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 19:34:01,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 19:34:01,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 19:34:01,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 19:34:01,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 19:34:01,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 19:34:01,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (1/1) ... [2023-02-18 19:34:01,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:34:01,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:01,918 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) [2023-02-18 19:34:01,921 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 [2023-02-18 19:34:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 19:34:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-02-18 19:34:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-02-18 19:34:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 19:34:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-02-18 19:34:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-02-18 19:34:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 19:34:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 19:34:01,991 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 19:34:01,992 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 19:34:02,113 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 19:34:02,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 19:34:02,117 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 19:34:02,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:34:02 BoogieIcfgContainer [2023-02-18 19:34:02,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 19:34:02,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 19:34:02,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 19:34:02,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 19:34:02,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:34:01" (1/3) ... [2023-02-18 19:34:02,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d9c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:34:02, skipping insertion in model container [2023-02-18 19:34:02,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:34:01" (2/3) ... [2023-02-18 19:34:02,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d9c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:34:02, skipping insertion in model container [2023-02-18 19:34:02,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:34:02" (3/3) ... [2023-02-18 19:34:02,126 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2023-02-18 19:34:02,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 19:34:02,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 19:34:02,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 19:34:02,189 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;@78f0d16c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 19:34:02,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 19:34:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 19:34:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 19:34:02,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:02,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:02,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash 951696528, now seen corresponding path program 1 times [2023-02-18 19:34:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726235007] [2023-02-18 19:34:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:34:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:02,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726235007] [2023-02-18 19:34:02,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726235007] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:34:02,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:34:02,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 19:34:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215761507] [2023-02-18 19:34:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:34:02,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 19:34:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 19:34:02,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 19:34:02,818 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 19:34:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:02,949 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2023-02-18 19:34:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 19:34:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-18 19:34:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:02,956 INFO L225 Difference]: With dead ends: 37 [2023-02-18 19:34:02,956 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 19:34:02,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 19:34:02,960 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:02,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:34:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 19:34:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-18 19:34:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 19:34:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-18 19:34:02,989 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2023-02-18 19:34:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:02,989 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-18 19:34:02,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 19:34:02,990 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-18 19:34:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 19:34:02,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:02,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:02,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 19:34:02,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash 186374926, now seen corresponding path program 1 times [2023-02-18 19:34:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:02,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283316620] [2023-02-18 19:34:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:34:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:03,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283316620] [2023-02-18 19:34:03,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283316620] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:34:03,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:34:03,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 19:34:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516930595] [2023-02-18 19:34:03,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:34:03,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 19:34:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 19:34:03,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 19:34:03,225 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 19:34:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:03,320 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-02-18 19:34:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 19:34:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-18 19:34:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:03,322 INFO L225 Difference]: With dead ends: 30 [2023-02-18 19:34:03,322 INFO L226 Difference]: Without dead ends: 26 [2023-02-18 19:34:03,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-18 19:34:03,327 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:03,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:34:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-18 19:34:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-02-18 19:34:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 19:34:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-18 19:34:03,340 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2023-02-18 19:34:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:03,341 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-18 19:34:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 19:34:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-18 19:34:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 19:34:03,342 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:03,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:03,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 19:34:03,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1539294770, now seen corresponding path program 1 times [2023-02-18 19:34:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:03,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189990830] [2023-02-18 19:34:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:03,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:34:03,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:03,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189990830] [2023-02-18 19:34:03,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189990830] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:34:03,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:34:03,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 19:34:03,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864747152] [2023-02-18 19:34:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:34:03,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 19:34:03,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 19:34:03,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 19:34:03,436 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:34:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:03,462 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-02-18 19:34:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 19:34:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 18 [2023-02-18 19:34:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:03,463 INFO L225 Difference]: With dead ends: 38 [2023-02-18 19:34:03,463 INFO L226 Difference]: Without dead ends: 26 [2023-02-18 19:34:03,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 19:34:03,469 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:03,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:34:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-18 19:34:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-02-18 19:34:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 19:34:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-18 19:34:03,479 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2023-02-18 19:34:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:03,479 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-18 19:34:03,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:34:03,480 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-18 19:34:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 19:34:03,480 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:03,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:03,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 19:34:03,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash -542404186, now seen corresponding path program 1 times [2023-02-18 19:34:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:03,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417490378] [2023-02-18 19:34:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:03,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:34:03,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417490378] [2023-02-18 19:34:03,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417490378] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:34:03,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:34:03,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 19:34:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70284511] [2023-02-18 19:34:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:34:03,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 19:34:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 19:34:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-18 19:34:03,727 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:34:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:03,814 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2023-02-18 19:34:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 19:34:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 19:34:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:03,817 INFO L225 Difference]: With dead ends: 33 [2023-02-18 19:34:03,817 INFO L226 Difference]: Without dead ends: 29 [2023-02-18 19:34:03,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-18 19:34:03,821 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:03,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 79 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:34:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-18 19:34:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-18 19:34:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 19:34:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-18 19:34:03,830 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2023-02-18 19:34:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:03,831 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-18 19:34:03,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:34:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-18 19:34:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 19:34:03,832 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:03,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:03,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 19:34:03,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash 928601386, now seen corresponding path program 1 times [2023-02-18 19:34:03,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:03,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148240623] [2023-02-18 19:34:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:03,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 19:34:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:03,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148240623] [2023-02-18 19:34:03,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148240623] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:34:03,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:34:03,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 19:34:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990280138] [2023-02-18 19:34:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:34:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 19:34:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 19:34:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 19:34:03,897 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 19:34:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:03,928 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-02-18 19:34:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 19:34:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-18 19:34:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:03,931 INFO L225 Difference]: With dead ends: 39 [2023-02-18 19:34:03,931 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 19:34:03,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 19:34:03,932 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:03,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:34:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 19:34:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-18 19:34:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 19:34:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2023-02-18 19:34:03,938 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2023-02-18 19:34:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:03,938 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2023-02-18 19:34:03,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 19:34:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2023-02-18 19:34:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 19:34:03,940 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:03,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 19:34:03,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1102972856, now seen corresponding path program 1 times [2023-02-18 19:34:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:03,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364203275] [2023-02-18 19:34:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 19:34:04,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:04,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364203275] [2023-02-18 19:34:04,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364203275] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:04,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81512938] [2023-02-18 19:34:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:04,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:04,219 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) [2023-02-18 19:34:04,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 19:34:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:04,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-18 19:34:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 19:34:04,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 19:34:04,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81512938] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:04,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:04,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2023-02-18 19:34:04,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652210820] [2023-02-18 19:34:04,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:04,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 19:34:04,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:04,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 19:34:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-02-18 19:34:04,618 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 19:34:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:04,784 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-02-18 19:34:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 19:34:04,784 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 26 [2023-02-18 19:34:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:04,785 INFO L225 Difference]: With dead ends: 39 [2023-02-18 19:34:04,785 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 19:34:04,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 32 SyntacticMatches, 16 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2023-02-18 19:34:04,786 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:04,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 141 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:34:04,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 19:34:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-02-18 19:34:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 19:34:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-02-18 19:34:04,789 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 26 [2023-02-18 19:34:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:04,789 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-02-18 19:34:04,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 19:34:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-02-18 19:34:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 19:34:04,790 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:04,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:04,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 19:34:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-18 19:34:04,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash 550160832, now seen corresponding path program 1 times [2023-02-18 19:34:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:04,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20662496] [2023-02-18 19:34:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 19:34:05,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:05,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20662496] [2023-02-18 19:34:05,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20662496] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:05,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179218699] [2023-02-18 19:34:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:05,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:05,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:05,311 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) [2023-02-18 19:34:05,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 19:34:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:05,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-18 19:34:05,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 19:34:05,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 19:34:06,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179218699] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:06,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:06,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 23 [2023-02-18 19:34:06,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250903585] [2023-02-18 19:34:06,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:06,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 19:34:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 19:34:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-02-18 19:34:06,247 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-18 19:34:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:06,771 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2023-02-18 19:34:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 19:34:06,771 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 33 [2023-02-18 19:34:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:06,772 INFO L225 Difference]: With dead ends: 45 [2023-02-18 19:34:06,772 INFO L226 Difference]: Without dead ends: 41 [2023-02-18 19:34:06,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 20 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2023-02-18 19:34:06,773 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:06,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 160 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 19:34:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-18 19:34:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2023-02-18 19:34:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-18 19:34:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-02-18 19:34:06,776 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 33 [2023-02-18 19:34:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:06,776 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-02-18 19:34:06,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-18 19:34:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-02-18 19:34:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-18 19:34:06,777 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:06,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:06,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 19:34:06,982 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,SelfDestructingSolverStorable6 [2023-02-18 19:34:06,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:06,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 780373730, now seen corresponding path program 2 times [2023-02-18 19:34:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:06,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439528977] [2023-02-18 19:34:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:07,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 19:34:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439528977] [2023-02-18 19:34:07,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439528977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031708433] [2023-02-18 19:34:07,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:34:07,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:07,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:07,279 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) [2023-02-18 19:34:07,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 19:34:07,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:34:07,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:07,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 19:34:07,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 19:34:07,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 19:34:07,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031708433] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:07,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:07,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 18] total 27 [2023-02-18 19:34:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019180295] [2023-02-18 19:34:07,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-18 19:34:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-18 19:34:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2023-02-18 19:34:07,751 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 27 states, 25 states have (on average 1.76) internal successors, (44), 19 states have internal predecessors, (44), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2023-02-18 19:34:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:07,989 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2023-02-18 19:34:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 19:34:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.76) internal successors, (44), 19 states have internal predecessors, (44), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) Word has length 40 [2023-02-18 19:34:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:07,991 INFO L225 Difference]: With dead ends: 51 [2023-02-18 19:34:07,991 INFO L226 Difference]: Without dead ends: 47 [2023-02-18 19:34:07,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 53 SyntacticMatches, 25 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 19:34:07,992 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:07,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 182 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:34:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-18 19:34:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2023-02-18 19:34:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 19:34:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-02-18 19:34:07,996 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 40 [2023-02-18 19:34:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:07,996 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-02-18 19:34:07,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.76) internal successors, (44), 19 states have internal predecessors, (44), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2023-02-18 19:34:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-02-18 19:34:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 19:34:07,997 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:07,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:08,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 19:34:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:08,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash 866829402, now seen corresponding path program 2 times [2023-02-18 19:34:08,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:08,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618520388] [2023-02-18 19:34:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 19:34:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:08,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618520388] [2023-02-18 19:34:08,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618520388] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:08,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563289681] [2023-02-18 19:34:08,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:34:08,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:08,556 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) [2023-02-18 19:34:08,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 19:34:08,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:34:08,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:08,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-18 19:34:08,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 19:34:08,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 19:34:09,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563289681] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:09,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:09,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 21] total 29 [2023-02-18 19:34:09,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105650274] [2023-02-18 19:34:09,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:09,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-18 19:34:09,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-18 19:34:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-02-18 19:34:09,018 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2023-02-18 19:34:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:09,395 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2023-02-18 19:34:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 19:34:09,395 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 47 [2023-02-18 19:34:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:09,396 INFO L225 Difference]: With dead ends: 57 [2023-02-18 19:34:09,396 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 19:34:09,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 66 SyntacticMatches, 28 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1537, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 19:34:09,397 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:09,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 246 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 19:34:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 19:34:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2023-02-18 19:34:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-18 19:34:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2023-02-18 19:34:09,400 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 47 [2023-02-18 19:34:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:09,400 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2023-02-18 19:34:09,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2023-02-18 19:34:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2023-02-18 19:34:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-18 19:34:09,401 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:09,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:09,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 19:34:09,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:09,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1271721844, now seen corresponding path program 3 times [2023-02-18 19:34:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:09,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844157435] [2023-02-18 19:34:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:09,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-18 19:34:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:10,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844157435] [2023-02-18 19:34:10,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844157435] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:10,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373834019] [2023-02-18 19:34:10,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:34:10,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:10,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:10,100 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) [2023-02-18 19:34:10,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 19:34:10,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 19:34:10,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:10,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 64 conjunts are in the unsatisfiable core [2023-02-18 19:34:10,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-18 19:34:10,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 19:34:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373834019] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:10,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:10,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24] total 33 [2023-02-18 19:34:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651579872] [2023-02-18 19:34:10,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 19:34:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 19:34:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 19:34:10,741 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 33 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 23 states have internal predecessors, (54), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2023-02-18 19:34:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:11,063 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2023-02-18 19:34:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 19:34:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 23 states have internal predecessors, (54), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) Word has length 54 [2023-02-18 19:34:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:11,065 INFO L225 Difference]: With dead ends: 63 [2023-02-18 19:34:11,065 INFO L226 Difference]: Without dead ends: 59 [2023-02-18 19:34:11,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 32 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 19:34:11,066 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:11,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 266 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 19:34:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-18 19:34:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2023-02-18 19:34:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-18 19:34:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-02-18 19:34:11,070 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 54 [2023-02-18 19:34:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:11,071 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-02-18 19:34:11,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 23 states have internal predecessors, (54), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2023-02-18 19:34:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-02-18 19:34:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-18 19:34:11,072 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:11,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:11,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 19:34:11,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 19:34:11,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1194008948, now seen corresponding path program 3 times [2023-02-18 19:34:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:11,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313837209] [2023-02-18 19:34:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 19:34:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:11,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313837209] [2023-02-18 19:34:11,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313837209] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:11,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054690644] [2023-02-18 19:34:11,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:34:11,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:11,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:11,824 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) [2023-02-18 19:34:11,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 19:34:11,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 19:34:11,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:11,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 72 conjunts are in the unsatisfiable core [2023-02-18 19:34:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 19:34:12,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 19:34:12,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054690644] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:12,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:12,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 27] total 35 [2023-02-18 19:34:12,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544747974] [2023-02-18 19:34:12,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-18 19:34:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-18 19:34:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 19:34:12,396 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 35 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 24 states have internal predecessors, (58), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-18 19:34:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:12,818 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2023-02-18 19:34:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-18 19:34:12,818 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 24 states have internal predecessors, (58), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 61 [2023-02-18 19:34:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:12,819 INFO L225 Difference]: With dead ends: 69 [2023-02-18 19:34:12,819 INFO L226 Difference]: Without dead ends: 65 [2023-02-18 19:34:12,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 36 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 19:34:12,820 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:12,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 285 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 19:34:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-18 19:34:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2023-02-18 19:34:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-18 19:34:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2023-02-18 19:34:12,824 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 61 [2023-02-18 19:34:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:12,824 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2023-02-18 19:34:12,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 24 states have internal predecessors, (58), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-18 19:34:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2023-02-18 19:34:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-18 19:34:12,825 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:12,825 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:12,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 19:34:13,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:13,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash 809184438, now seen corresponding path program 4 times [2023-02-18 19:34:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:13,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436871573] [2023-02-18 19:34:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:13,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 19:34:13,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:13,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436871573] [2023-02-18 19:34:13,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436871573] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:13,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630534207] [2023-02-18 19:34:13,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:34:13,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:13,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:13,712 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) [2023-02-18 19:34:13,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 19:34:13,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:34:13,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:13,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 80 conjunts are in the unsatisfiable core [2023-02-18 19:34:13,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 19:34:14,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 19:34:14,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630534207] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:14,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:14,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 30] total 39 [2023-02-18 19:34:14,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290179699] [2023-02-18 19:34:14,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-18 19:34:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-18 19:34:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 19:34:14,471 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 27 states have internal predecessors, (64), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-18 19:34:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:14,976 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2023-02-18 19:34:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 19:34:14,977 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 27 states have internal predecessors, (64), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 68 [2023-02-18 19:34:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:14,977 INFO L225 Difference]: With dead ends: 75 [2023-02-18 19:34:14,977 INFO L226 Difference]: Without dead ends: 71 [2023-02-18 19:34:14,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 99 SyntacticMatches, 39 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=286, Invalid=2906, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 19:34:14,978 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:14,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 324 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 19:34:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-18 19:34:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2023-02-18 19:34:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-18 19:34:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2023-02-18 19:34:14,983 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 68 [2023-02-18 19:34:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:14,984 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2023-02-18 19:34:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 27 states have internal predecessors, (64), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-18 19:34:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2023-02-18 19:34:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-02-18 19:34:14,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:14,985 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:14,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 19:34:15,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:15,189 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:15,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:15,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1512865522, now seen corresponding path program 4 times [2023-02-18 19:34:15,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:15,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162460496] [2023-02-18 19:34:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:15,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-02-18 19:34:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162460496] [2023-02-18 19:34:15,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162460496] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370010489] [2023-02-18 19:34:15,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:34:15,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:15,907 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) [2023-02-18 19:34:15,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 19:34:16,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:34:16,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:16,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 88 conjunts are in the unsatisfiable core [2023-02-18 19:34:16,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-02-18 19:34:16,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-02-18 19:34:16,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370010489] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:16,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:16,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 33] total 42 [2023-02-18 19:34:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471803316] [2023-02-18 19:34:16,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-18 19:34:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-18 19:34:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 19:34:16,803 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 42 states, 40 states have (on average 1.725) internal successors, (69), 29 states have internal predecessors, (69), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2023-02-18 19:34:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:17,433 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2023-02-18 19:34:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 19:34:17,433 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 1.725) internal successors, (69), 29 states have internal predecessors, (69), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) Word has length 75 [2023-02-18 19:34:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:17,434 INFO L225 Difference]: With dead ends: 81 [2023-02-18 19:34:17,434 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 19:34:17,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 110 SyntacticMatches, 43 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=337, Invalid=3569, Unknown=0, NotChecked=0, Total=3906 [2023-02-18 19:34:17,435 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:17,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 443 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 19:34:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 19:34:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2023-02-18 19:34:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-02-18 19:34:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2023-02-18 19:34:17,439 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 75 [2023-02-18 19:34:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:17,439 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2023-02-18 19:34:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 1.725) internal successors, (69), 29 states have internal predecessors, (69), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2023-02-18 19:34:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2023-02-18 19:34:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-18 19:34:17,440 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:17,440 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:17,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 19:34:17,647 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,SelfDestructingSolverStorable12 [2023-02-18 19:34:17,647 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1531804832, now seen corresponding path program 5 times [2023-02-18 19:34:17,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720463391] [2023-02-18 19:34:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-02-18 19:34:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:18,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720463391] [2023-02-18 19:34:18,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720463391] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:18,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573937476] [2023-02-18 19:34:18,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:34:18,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:18,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:18,439 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) [2023-02-18 19:34:18,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 19:34:18,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-18 19:34:18,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-18 19:34:18,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-02-18 19:34:18,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-18 19:34:19,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573937476] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:19,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:19,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 36] total 45 [2023-02-18 19:34:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606424459] [2023-02-18 19:34:19,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:19,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-02-18 19:34:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-02-18 19:34:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1832, Unknown=0, NotChecked=0, Total=1980 [2023-02-18 19:34:19,466 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 45 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 31 states have internal predecessors, (74), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 19:34:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:20,160 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2023-02-18 19:34:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 19:34:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 31 states have internal predecessors, (74), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) Word has length 82 [2023-02-18 19:34:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:20,161 INFO L225 Difference]: With dead ends: 87 [2023-02-18 19:34:20,161 INFO L226 Difference]: Without dead ends: 83 [2023-02-18 19:34:20,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 119 SyntacticMatches, 49 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=365, Invalid=4057, Unknown=0, NotChecked=0, Total=4422 [2023-02-18 19:34:20,163 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:20,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 501 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 19:34:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-18 19:34:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2023-02-18 19:34:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-18 19:34:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2023-02-18 19:34:20,166 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 82 [2023-02-18 19:34:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:20,166 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2023-02-18 19:34:20,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 31 states have internal predecessors, (74), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 19:34:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2023-02-18 19:34:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-18 19:34:20,167 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:20,167 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:20,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 19:34:20,368 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,SelfDestructingSolverStorable13 [2023-02-18 19:34:20,368 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1881963736, now seen corresponding path program 5 times [2023-02-18 19:34:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796815809] [2023-02-18 19:34:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-02-18 19:34:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:21,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796815809] [2023-02-18 19:34:21,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796815809] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:21,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045340221] [2023-02-18 19:34:21,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:34:21,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:21,254 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) [2023-02-18 19:34:21,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 19:34:21,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-18 19:34:21,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:21,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 104 conjunts are in the unsatisfiable core [2023-02-18 19:34:21,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-02-18 19:34:21,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 19:34:22,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045340221] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:22,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:22,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 39] total 47 [2023-02-18 19:34:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166006202] [2023-02-18 19:34:22,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-18 19:34:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-18 19:34:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2008, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 19:34:22,560 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 32 states have internal predecessors, (78), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2023-02-18 19:34:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:23,316 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-02-18 19:34:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-18 19:34:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 32 states have internal predecessors, (78), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) Word has length 89 [2023-02-18 19:34:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:23,317 INFO L225 Difference]: With dead ends: 93 [2023-02-18 19:34:23,317 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 19:34:23,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 131 SyntacticMatches, 53 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=417, Invalid=4695, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 19:34:23,319 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:23,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 460 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 19:34:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 19:34:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2023-02-18 19:34:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-02-18 19:34:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2023-02-18 19:34:23,323 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 89 [2023-02-18 19:34:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:23,323 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2023-02-18 19:34:23,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 32 states have internal predecessors, (78), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2023-02-18 19:34:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2023-02-18 19:34:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-18 19:34:23,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:23,324 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:23,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 19:34:23,524 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,SelfDestructingSolverStorable14 [2023-02-18 19:34:23,524 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1649915018, now seen corresponding path program 6 times [2023-02-18 19:34:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:23,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926813946] [2023-02-18 19:34:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-18 19:34:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:24,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926813946] [2023-02-18 19:34:24,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926813946] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:24,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788355429] [2023-02-18 19:34:24,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:34:24,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:24,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:24,604 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) [2023-02-18 19:34:24,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 19:34:24,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-18 19:34:24,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:24,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 112 conjunts are in the unsatisfiable core [2023-02-18 19:34:24,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-18 19:34:25,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 19:34:25,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788355429] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:25,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:25,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 42] total 51 [2023-02-18 19:34:25,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137751970] [2023-02-18 19:34:25,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:25,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-18 19:34:25,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-18 19:34:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2023-02-18 19:34:25,868 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 51 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 35 states have internal predecessors, (84), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 19:34:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:26,606 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2023-02-18 19:34:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 19:34:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 35 states have internal predecessors, (84), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) Word has length 96 [2023-02-18 19:34:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:26,607 INFO L225 Difference]: With dead ends: 99 [2023-02-18 19:34:26,607 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 19:34:26,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 142 SyntacticMatches, 56 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=452, Invalid=5400, Unknown=0, NotChecked=0, Total=5852 [2023-02-18 19:34:26,609 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:26,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 625 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 19:34:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 19:34:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 60. [2023-02-18 19:34:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2023-02-18 19:34:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2023-02-18 19:34:26,616 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 96 [2023-02-18 19:34:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:26,618 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2023-02-18 19:34:26,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 35 states have internal predecessors, (84), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 19:34:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2023-02-18 19:34:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-18 19:34:26,619 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:26,619 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:26,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 19:34:26,824 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,SelfDestructingSolverStorable15 [2023-02-18 19:34:26,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1794979902, now seen corresponding path program 6 times [2023-02-18 19:34:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:26,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716296685] [2023-02-18 19:34:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-02-18 19:34:27,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:27,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716296685] [2023-02-18 19:34:27,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716296685] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:27,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030744219] [2023-02-18 19:34:27,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:34:27,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:27,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:27,998 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) [2023-02-18 19:34:28,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 19:34:28,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-18 19:34:28,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 120 conjunts are in the unsatisfiable core [2023-02-18 19:34:28,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-02-18 19:34:28,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-18 19:34:29,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030744219] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:29,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:29,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 45] total 53 [2023-02-18 19:34:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512280722] [2023-02-18 19:34:29,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-18 19:34:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-18 19:34:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2580, Unknown=0, NotChecked=0, Total=2756 [2023-02-18 19:34:29,240 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 53 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 36 states have internal predecessors, (88), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (29), 17 states have call predecessors, (29), 17 states have call successors, (29) [2023-02-18 19:34:30,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:30,262 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2023-02-18 19:34:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 19:34:30,262 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 36 states have internal predecessors, (88), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (29), 17 states have call predecessors, (29), 17 states have call successors, (29) Word has length 103 [2023-02-18 19:34:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:30,263 INFO L225 Difference]: With dead ends: 105 [2023-02-18 19:34:30,263 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 19:34:30,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 154 SyntacticMatches, 60 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=510, Invalid=6132, Unknown=0, NotChecked=0, Total=6642 [2023-02-18 19:34:30,265 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 53 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:30,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 733 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 19:34:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 19:34:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 63. [2023-02-18 19:34:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2023-02-18 19:34:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2023-02-18 19:34:30,269 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 103 [2023-02-18 19:34:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:30,269 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2023-02-18 19:34:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 36 states have internal predecessors, (88), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (29), 17 states have call predecessors, (29), 17 states have call successors, (29) [2023-02-18 19:34:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2023-02-18 19:34:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-18 19:34:30,270 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:30,270 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:30,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-18 19:34:30,475 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,SelfDestructingSolverStorable16 [2023-02-18 19:34:30,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash 848388148, now seen corresponding path program 7 times [2023-02-18 19:34:30,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:30,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461198893] [2023-02-18 19:34:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-02-18 19:34:31,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:31,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461198893] [2023-02-18 19:34:31,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461198893] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:31,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428528237] [2023-02-18 19:34:31,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:34:31,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:31,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:31,879 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) [2023-02-18 19:34:31,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 19:34:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:31,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 128 conjunts are in the unsatisfiable core [2023-02-18 19:34:31,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-02-18 19:34:32,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-02-18 19:34:33,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428528237] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:33,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:33,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 48] total 57 [2023-02-18 19:34:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962517214] [2023-02-18 19:34:33,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:33,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-18 19:34:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-18 19:34:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3000, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 19:34:33,346 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 57 states, 55 states have (on average 1.709090909090909) internal successors, (94), 39 states have internal predecessors, (94), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2023-02-18 19:34:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:34,360 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2023-02-18 19:34:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-18 19:34:34,361 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 1.709090909090909) internal successors, (94), 39 states have internal predecessors, (94), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) Word has length 110 [2023-02-18 19:34:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:34,362 INFO L225 Difference]: With dead ends: 111 [2023-02-18 19:34:34,362 INFO L226 Difference]: Without dead ends: 107 [2023-02-18 19:34:34,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 162 SyntacticMatches, 66 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=547, Invalid=6935, Unknown=0, NotChecked=0, Total=7482 [2023-02-18 19:34:34,364 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:34,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 680 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 19:34:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-18 19:34:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 66. [2023-02-18 19:34:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-02-18 19:34:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2023-02-18 19:34:34,369 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 110 [2023-02-18 19:34:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:34,369 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2023-02-18 19:34:34,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 1.709090909090909) internal successors, (94), 39 states have internal predecessors, (94), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2023-02-18 19:34:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2023-02-18 19:34:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-18 19:34:34,370 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:34,370 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:34,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-18 19:34:34,570 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,SelfDestructingSolverStorable17 [2023-02-18 19:34:34,570 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1860234972, now seen corresponding path program 7 times [2023-02-18 19:34:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:34,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005867841] [2023-02-18 19:34:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:34,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:34,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-02-18 19:34:36,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:36,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005867841] [2023-02-18 19:34:36,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005867841] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:36,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036806795] [2023-02-18 19:34:36,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:34:36,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:36,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:36,079 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) [2023-02-18 19:34:36,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 19:34:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:36,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 136 conjunts are in the unsatisfiable core [2023-02-18 19:34:36,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-02-18 19:34:36,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-18 19:34:37,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036806795] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:37,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:37,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2023-02-18 19:34:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812737044] [2023-02-18 19:34:37,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:37,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-18 19:34:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-18 19:34:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3338, Unknown=0, NotChecked=0, Total=3540 [2023-02-18 19:34:37,379 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 60 states, 58 states have (on average 1.706896551724138) internal successors, (99), 41 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (33), 19 states have call predecessors, (33), 20 states have call successors, (33) [2023-02-18 19:34:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:38,437 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2023-02-18 19:34:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-02-18 19:34:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 58 states have (on average 1.706896551724138) internal successors, (99), 41 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (33), 19 states have call predecessors, (33), 20 states have call successors, (33) Word has length 117 [2023-02-18 19:34:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:38,438 INFO L225 Difference]: With dead ends: 117 [2023-02-18 19:34:38,438 INFO L226 Difference]: Without dead ends: 113 [2023-02-18 19:34:38,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 175 SyntacticMatches, 68 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=616, Invalid=7940, Unknown=0, NotChecked=0, Total=8556 [2023-02-18 19:34:38,439 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:38,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 872 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 19:34:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-02-18 19:34:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2023-02-18 19:34:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-02-18 19:34:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2023-02-18 19:34:38,442 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 117 [2023-02-18 19:34:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:38,442 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2023-02-18 19:34:38,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 58 states have (on average 1.706896551724138) internal successors, (99), 41 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (33), 19 states have call predecessors, (33), 20 states have call successors, (33) [2023-02-18 19:34:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2023-02-18 19:34:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-02-18 19:34:38,443 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:38,443 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:38,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-18 19:34:38,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:38,645 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:38,645 INFO L85 PathProgramCache]: Analyzing trace with hash 23995998, now seen corresponding path program 8 times [2023-02-18 19:34:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:38,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226512603] [2023-02-18 19:34:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:38,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-02-18 19:34:40,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:40,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226512603] [2023-02-18 19:34:40,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226512603] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:40,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559316291] [2023-02-18 19:34:40,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:34:40,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:40,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:40,256 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) [2023-02-18 19:34:40,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 19:34:40,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:34:40,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:40,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 144 conjunts are in the unsatisfiable core [2023-02-18 19:34:40,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-02-18 19:34:40,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-18 19:34:42,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559316291] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:42,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:42,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 54] total 63 [2023-02-18 19:34:42,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20460422] [2023-02-18 19:34:42,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:42,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-02-18 19:34:42,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:42,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-02-18 19:34:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3692, Unknown=0, NotChecked=0, Total=3906 [2023-02-18 19:34:42,030 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 63 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 43 states have internal predecessors, (104), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2023-02-18 19:34:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:43,131 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-02-18 19:34:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-18 19:34:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 43 states have internal predecessors, (104), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) Word has length 124 [2023-02-18 19:34:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:43,134 INFO L225 Difference]: With dead ends: 123 [2023-02-18 19:34:43,134 INFO L226 Difference]: Without dead ends: 119 [2023-02-18 19:34:43,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 185 SyntacticMatches, 73 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=650, Invalid=8662, Unknown=0, NotChecked=0, Total=9312 [2023-02-18 19:34:43,137 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 51 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:43,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 942 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 19:34:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-18 19:34:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 72. [2023-02-18 19:34:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-02-18 19:34:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2023-02-18 19:34:43,155 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 124 [2023-02-18 19:34:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:43,155 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2023-02-18 19:34:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 43 states have internal predecessors, (104), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2023-02-18 19:34:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2023-02-18 19:34:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-02-18 19:34:43,157 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:43,157 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:43,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-18 19:34:43,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:43,363 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1519753334, now seen corresponding path program 8 times [2023-02-18 19:34:43,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:43,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851772976] [2023-02-18 19:34:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:43,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-18 19:34:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:45,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851772976] [2023-02-18 19:34:45,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851772976] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:45,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513386464] [2023-02-18 19:34:45,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:34:45,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:45,173 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:34:45,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 19:34:45,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:34:45,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:45,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 152 conjunts are in the unsatisfiable core [2023-02-18 19:34:45,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-18 19:34:45,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-02-18 19:34:46,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513386464] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:46,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:46,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 57] total 65 [2023-02-18 19:34:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694241242] [2023-02-18 19:34:46,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-18 19:34:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-18 19:34:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3940, Unknown=0, NotChecked=0, Total=4160 [2023-02-18 19:34:46,748 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 65 states, 64 states have (on average 1.6875) internal successors, (108), 44 states have internal predecessors, (108), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (37), 21 states have call predecessors, (37), 21 states have call successors, (37) [2023-02-18 19:34:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:48,036 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2023-02-18 19:34:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-18 19:34:48,036 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.6875) internal successors, (108), 44 states have internal predecessors, (108), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (37), 21 states have call predecessors, (37), 21 states have call successors, (37) Word has length 131 [2023-02-18 19:34:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:48,037 INFO L225 Difference]: With dead ends: 129 [2023-02-18 19:34:48,037 INFO L226 Difference]: Without dead ends: 125 [2023-02-18 19:34:48,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 196 SyntacticMatches, 78 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=720, Invalid=9582, Unknown=0, NotChecked=0, Total=10302 [2023-02-18 19:34:48,039 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:48,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 861 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 19:34:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-18 19:34:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 75. [2023-02-18 19:34:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-02-18 19:34:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2023-02-18 19:34:48,042 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 131 [2023-02-18 19:34:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:48,043 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2023-02-18 19:34:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.6875) internal successors, (108), 44 states have internal predecessors, (108), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (37), 21 states have call predecessors, (37), 21 states have call successors, (37) [2023-02-18 19:34:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2023-02-18 19:34:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-02-18 19:34:48,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:48,044 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:48,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 19:34:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:48,249 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 128231176, now seen corresponding path program 9 times [2023-02-18 19:34:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:48,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206126711] [2023-02-18 19:34:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:48,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:48,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:49,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-02-18 19:34:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:50,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206126711] [2023-02-18 19:34:50,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206126711] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:50,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811629390] [2023-02-18 19:34:50,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:34:50,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:50,373 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:34:50,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 19:34:50,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-18 19:34:50,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:50,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 160 conjunts are in the unsatisfiable core [2023-02-18 19:34:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-02-18 19:34:50,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-18 19:34:52,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811629390] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:52,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:52,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 60] total 69 [2023-02-18 19:34:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073454362] [2023-02-18 19:34:52,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:52,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-18 19:34:52,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-18 19:34:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4456, Unknown=0, NotChecked=0, Total=4692 [2023-02-18 19:34:52,177 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 47 states have internal predecessors, (114), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2023-02-18 19:34:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:34:53,590 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2023-02-18 19:34:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-18 19:34:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 47 states have internal predecessors, (114), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) Word has length 138 [2023-02-18 19:34:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:34:53,593 INFO L225 Difference]: With dead ends: 135 [2023-02-18 19:34:53,593 INFO L226 Difference]: Without dead ends: 131 [2023-02-18 19:34:53,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 208 SyntacticMatches, 80 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=761, Invalid=10581, Unknown=0, NotChecked=0, Total=11342 [2023-02-18 19:34:53,595 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 112 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:34:53,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1170 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 19:34:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-18 19:34:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 78. [2023-02-18 19:34:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2023-02-18 19:34:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-02-18 19:34:53,620 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 138 [2023-02-18 19:34:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:34:53,620 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-02-18 19:34:53,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 47 states have internal predecessors, (114), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2023-02-18 19:34:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-02-18 19:34:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-02-18 19:34:53,621 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:34:53,621 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:34:53,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-18 19:34:53,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:53,827 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:34:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:34:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash -219126640, now seen corresponding path program 9 times [2023-02-18 19:34:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:34:53,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75975642] [2023-02-18 19:34:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:34:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:34:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:34:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:34:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-02-18 19:34:56,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:34:56,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75975642] [2023-02-18 19:34:56,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75975642] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:34:56,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296505231] [2023-02-18 19:34:56,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:34:56,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:34:56,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:34:56,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:34:56,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 19:34:56,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-18 19:34:56,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:34:56,297 WARN L261 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 168 conjunts are in the unsatisfiable core [2023-02-18 19:34:56,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:34:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-02-18 19:34:57,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:34:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-02-18 19:34:58,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296505231] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:34:58,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:34:58,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 71 [2023-02-18 19:34:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592416321] [2023-02-18 19:34:58,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:34:58,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-02-18 19:34:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:34:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-02-18 19:34:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4728, Unknown=0, NotChecked=0, Total=4970 [2023-02-18 19:34:58,591 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 71 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 48 states have internal predecessors, (118), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2023-02-18 19:35:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:35:00,594 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2023-02-18 19:35:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 19:35:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 48 states have internal predecessors, (118), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) Word has length 145 [2023-02-18 19:35:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:35:00,595 INFO L225 Difference]: With dead ends: 141 [2023-02-18 19:35:00,595 INFO L226 Difference]: Without dead ends: 137 [2023-02-18 19:35:00,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 219 SyntacticMatches, 85 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=837, Invalid=11595, Unknown=0, NotChecked=0, Total=12432 [2023-02-18 19:35:00,596 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 78 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:35:00,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1125 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 19:35:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-18 19:35:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 81. [2023-02-18 19:35:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-02-18 19:35:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2023-02-18 19:35:00,599 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 145 [2023-02-18 19:35:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:35:00,600 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2023-02-18 19:35:00,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 48 states have internal predecessors, (118), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2023-02-18 19:35:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2023-02-18 19:35:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-02-18 19:35:00,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:35:00,601 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:35:00,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-18 19:35:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:00,805 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:35:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:35:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1955824178, now seen corresponding path program 10 times [2023-02-18 19:35:00,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:35:00,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238837338] [2023-02-18 19:35:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:35:00,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:35:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-02-18 19:35:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:35:03,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238837338] [2023-02-18 19:35:03,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238837338] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:35:03,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672133433] [2023-02-18 19:35:03,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:35:03,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:03,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:35:03,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:35:03,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 19:35:03,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:35:03,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:35:03,631 WARN L261 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 176 conjunts are in the unsatisfiable core [2023-02-18 19:35:03,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:35:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-02-18 19:35:04,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:35:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-18 19:35:05,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672133433] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:35:05,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:35:05,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 66] total 75 [2023-02-18 19:35:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398733272] [2023-02-18 19:35:05,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:35:05,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-02-18 19:35:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:35:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-02-18 19:35:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=5292, Unknown=0, NotChecked=0, Total=5550 [2023-02-18 19:35:05,676 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 75 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 51 states have internal predecessors, (124), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2023-02-18 19:35:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:35:07,447 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2023-02-18 19:35:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-18 19:35:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 51 states have internal predecessors, (124), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) Word has length 152 [2023-02-18 19:35:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:35:07,448 INFO L225 Difference]: With dead ends: 147 [2023-02-18 19:35:07,448 INFO L226 Difference]: Without dead ends: 143 [2023-02-18 19:35:07,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 228 SyntacticMatches, 90 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=880, Invalid=12692, Unknown=0, NotChecked=0, Total=13572 [2023-02-18 19:35:07,450 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 89 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 19:35:07,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1361 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 19:35:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-02-18 19:35:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 84. [2023-02-18 19:35:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2023-02-18 19:35:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2023-02-18 19:35:07,454 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 152 [2023-02-18 19:35:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:35:07,454 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2023-02-18 19:35:07,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 51 states have internal predecessors, (124), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2023-02-18 19:35:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2023-02-18 19:35:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-02-18 19:35:07,455 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:35:07,456 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:35:07,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 19:35:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:07,668 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:35:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:35:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1972833494, now seen corresponding path program 10 times [2023-02-18 19:35:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:35:07,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986959143] [2023-02-18 19:35:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:35:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:35:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-02-18 19:35:10,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:35:10,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986959143] [2023-02-18 19:35:10,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986959143] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:35:10,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516641166] [2023-02-18 19:35:10,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:35:10,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:35:10,443 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:35:10,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 19:35:10,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:35:10,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:35:10,631 WARN L261 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 184 conjunts are in the unsatisfiable core [2023-02-18 19:35:10,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:35:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-02-18 19:35:11,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:35:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-02-18 19:35:12,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516641166] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:35:12,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:35:12,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50, 69] total 77 [2023-02-18 19:35:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372597787] [2023-02-18 19:35:12,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:35:12,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-18 19:35:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:35:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-18 19:35:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5588, Unknown=0, NotChecked=0, Total=5852 [2023-02-18 19:35:12,769 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 77 states, 76 states have (on average 1.6842105263157894) internal successors, (128), 52 states have internal predecessors, (128), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) [2023-02-18 19:35:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:35:14,728 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2023-02-18 19:35:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-18 19:35:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.6842105263157894) internal successors, (128), 52 states have internal predecessors, (128), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) Word has length 159 [2023-02-18 19:35:14,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:35:14,729 INFO L225 Difference]: With dead ends: 153 [2023-02-18 19:35:14,729 INFO L226 Difference]: Without dead ends: 149 [2023-02-18 19:35:14,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 238 SyntacticMatches, 96 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=962, Invalid=13800, Unknown=0, NotChecked=0, Total=14762 [2023-02-18 19:35:14,733 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 19:35:14,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1402 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 19:35:14,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-18 19:35:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 87. [2023-02-18 19:35:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 24 states have call predecessors, (25), 3 states have call successors, (25) [2023-02-18 19:35:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2023-02-18 19:35:14,742 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 159 [2023-02-18 19:35:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:35:14,742 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2023-02-18 19:35:14,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.6842105263157894) internal successors, (128), 52 states have internal predecessors, (128), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) [2023-02-18 19:35:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2023-02-18 19:35:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-02-18 19:35:14,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:35:14,743 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:35:14,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 19:35:14,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-02-18 19:35:14,950 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:35:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:35:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1740548132, now seen corresponding path program 11 times [2023-02-18 19:35:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:35:14,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852842995] [2023-02-18 19:35:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:35:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:35:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2023-02-18 19:35:18,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:35:18,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852842995] [2023-02-18 19:35:18,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852842995] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:35:18,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912053350] [2023-02-18 19:35:18,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:35:18,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:18,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:35:18,096 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:35:18,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 19:35:18,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-02-18 19:35:18,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:35:18,322 WARN L261 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-18 19:35:18,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:35:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2023-02-18 19:35:18,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:35:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-18 19:35:20,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912053350] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:35:20,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:35:20,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 72] total 81 [2023-02-18 19:35:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524641146] [2023-02-18 19:35:20,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:35:20,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-02-18 19:35:20,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:35:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-02-18 19:35:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=6200, Unknown=0, NotChecked=0, Total=6480 [2023-02-18 19:35:20,326 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 81 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 55 states have internal predecessors, (134), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2023-02-18 19:35:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:35:21,942 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2023-02-18 19:35:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-02-18 19:35:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 55 states have internal predecessors, (134), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) Word has length 166 [2023-02-18 19:35:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:35:21,943 INFO L225 Difference]: With dead ends: 159 [2023-02-18 19:35:21,943 INFO L226 Difference]: Without dead ends: 155 [2023-02-18 19:35:21,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 250 SyntacticMatches, 98 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2353 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1007, Invalid=14995, Unknown=0, NotChecked=0, Total=16002 [2023-02-18 19:35:21,946 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 177 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:35:21,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1279 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 19:35:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-18 19:35:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 90. [2023-02-18 19:35:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2023-02-18 19:35:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2023-02-18 19:35:21,951 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 166 [2023-02-18 19:35:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:35:21,952 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2023-02-18 19:35:21,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 55 states have internal predecessors, (134), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2023-02-18 19:35:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2023-02-18 19:35:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-02-18 19:35:21,953 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:35:21,953 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:35:21,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-18 19:35:22,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-18 19:35:22,160 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:35:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:35:22,160 INFO L85 PathProgramCache]: Analyzing trace with hash 85910596, now seen corresponding path program 11 times [2023-02-18 19:35:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:35:22,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623347794] [2023-02-18 19:35:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:35:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:35:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-02-18 19:35:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:35:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623347794] [2023-02-18 19:35:25,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623347794] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:35:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472800288] [2023-02-18 19:35:25,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:35:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:35:25,554 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:35:25,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 19:35:25,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-02-18 19:35:25,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:35:25,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 200 conjunts are in the unsatisfiable core [2023-02-18 19:35:25,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:35:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-02-18 19:35:26,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:35:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-02-18 19:35:28,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472800288] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:35:28,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:35:28,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 54, 75] total 83 [2023-02-18 19:35:28,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679516438] [2023-02-18 19:35:28,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:35:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-02-18 19:35:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:35:28,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-02-18 19:35:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6520, Unknown=0, NotChecked=0, Total=6806 [2023-02-18 19:35:28,616 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 83 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 56 states have internal predecessors, (138), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) [2023-02-18 19:35:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:35:30,971 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2023-02-18 19:35:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-02-18 19:35:30,971 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 56 states have internal predecessors, (138), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) Word has length 173 [2023-02-18 19:35:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:35:30,972 INFO L225 Difference]: With dead ends: 165 [2023-02-18 19:35:30,972 INFO L226 Difference]: Without dead ends: 161 [2023-02-18 19:35:30,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 263 SyntacticMatches, 101 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2192 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1095, Invalid=16197, Unknown=0, NotChecked=0, Total=17292 [2023-02-18 19:35:30,975 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 111 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:35:30,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1459 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 19:35:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-02-18 19:35:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 93. [2023-02-18 19:35:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2023-02-18 19:35:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2023-02-18 19:35:30,985 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 173 [2023-02-18 19:35:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:35:30,985 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2023-02-18 19:35:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 56 states have internal predecessors, (138), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) [2023-02-18 19:35:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2023-02-18 19:35:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-02-18 19:35:30,986 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:35:30,986 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:35:30,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-18 19:35:31,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-02-18 19:35:31,193 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:35:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:35:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1923299322, now seen corresponding path program 12 times [2023-02-18 19:35:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:35:31,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825901254] [2023-02-18 19:35:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:35:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:35:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-02-18 19:35:35,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:35:35,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825901254] [2023-02-18 19:35:35,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825901254] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:35:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842275795] [2023-02-18 19:35:35,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:35:35,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:35,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:35:35,106 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:35:35,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-18 19:35:35,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-02-18 19:35:35,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:35:35,421 WARN L261 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 208 conjunts are in the unsatisfiable core [2023-02-18 19:35:35,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:35:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-02-18 19:35:36,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:35:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-02-18 19:35:38,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842275795] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:35:38,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:35:38,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 78] total 87 [2023-02-18 19:35:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737607348] [2023-02-18 19:35:38,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:35:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-02-18 19:35:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:35:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-02-18 19:35:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=7180, Unknown=0, NotChecked=0, Total=7482 [2023-02-18 19:35:38,308 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 87 states, 85 states have (on average 1.6941176470588235) internal successors, (144), 59 states have internal predecessors, (144), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) [2023-02-18 19:35:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:35:40,566 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2023-02-18 19:35:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-02-18 19:35:40,572 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 85 states have (on average 1.6941176470588235) internal successors, (144), 59 states have internal predecessors, (144), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) Word has length 180 [2023-02-18 19:35:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:35:40,573 INFO L225 Difference]: With dead ends: 171 [2023-02-18 19:35:40,573 INFO L226 Difference]: Without dead ends: 167 [2023-02-18 19:35:40,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 271 SyntacticMatches, 107 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2708 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1142, Invalid=17490, Unknown=0, NotChecked=0, Total=18632 [2023-02-18 19:35:40,576 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 133 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:35:40,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1685 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 19:35:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-02-18 19:35:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 96. [2023-02-18 19:35:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 27 states have call predecessors, (28), 3 states have call successors, (28) [2023-02-18 19:35:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2023-02-18 19:35:40,581 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 180 [2023-02-18 19:35:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:35:40,581 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2023-02-18 19:35:40,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 85 states have (on average 1.6941176470588235) internal successors, (144), 59 states have internal predecessors, (144), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) [2023-02-18 19:35:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2023-02-18 19:35:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-02-18 19:35:40,582 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:35:40,582 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:35:40,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-18 19:35:40,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:40,790 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:35:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:35:40,790 INFO L85 PathProgramCache]: Analyzing trace with hash 853137374, now seen corresponding path program 12 times [2023-02-18 19:35:40,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:35:40,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102770882] [2023-02-18 19:35:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:35:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:35:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:35:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:35:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-02-18 19:35:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:35:44,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102770882] [2023-02-18 19:35:44,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102770882] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:35:44,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910599381] [2023-02-18 19:35:44,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:35:44,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:35:44,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:35:44,792 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:35:44,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-18 19:35:45,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-02-18 19:35:45,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:35:45,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 164 conjunts are in the unsatisfiable core [2023-02-18 19:35:45,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:35:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-02-18 19:35:47,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:35:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-18 19:35:55,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910599381] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:35:55,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:35:55,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 58, 81] total 190 [2023-02-18 19:35:55,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532547345] [2023-02-18 19:35:55,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:35:55,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2023-02-18 19:35:55,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:35:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2023-02-18 19:35:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=35126, Unknown=0, NotChecked=0, Total=35910 [2023-02-18 19:35:55,607 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 190 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 112 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 78 states have return successors, (78), 78 states have call predecessors, (78), 29 states have call successors, (78) [2023-02-18 19:36:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:36:00,227 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2023-02-18 19:36:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-02-18 19:36:00,227 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 112 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 78 states have return successors, (78), 78 states have call predecessors, (78), 29 states have call successors, (78) Word has length 187 [2023-02-18 19:36:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:36:00,228 INFO L225 Difference]: With dead ends: 177 [2023-02-18 19:36:00,228 INFO L226 Difference]: Without dead ends: 173 [2023-02-18 19:36:00,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 237 SyntacticMatches, 56 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11656 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1789, Invalid=57017, Unknown=0, NotChecked=0, Total=58806 [2023-02-18 19:36:00,233 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 63 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-18 19:36:00,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2840 Invalid, 5498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-18 19:36:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-02-18 19:36:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 99. [2023-02-18 19:36:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2023-02-18 19:36:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2023-02-18 19:36:00,237 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 187 [2023-02-18 19:36:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:36:00,237 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2023-02-18 19:36:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 112 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 78 states have return successors, (78), 78 states have call predecessors, (78), 29 states have call successors, (78) [2023-02-18 19:36:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2023-02-18 19:36:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-02-18 19:36:00,238 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:36:00,238 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:36:00,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-02-18 19:36:00,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-02-18 19:36:00,445 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:36:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:36:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1664905904, now seen corresponding path program 13 times [2023-02-18 19:36:00,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:36:00,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52864506] [2023-02-18 19:36:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:36:00,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:36:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-18 19:36:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:36:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52864506] [2023-02-18 19:36:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52864506] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:36:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439132840] [2023-02-18 19:36:05,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:36:05,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:36:05,049 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:36:05,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-02-18 19:36:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:06,077 WARN L261 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 224 conjunts are in the unsatisfiable core [2023-02-18 19:36:06,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:36:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-18 19:36:06,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:36:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-02-18 19:36:09,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439132840] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:36:09,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:36:09,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 84] total 93 [2023-02-18 19:36:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646391747] [2023-02-18 19:36:09,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:36:09,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-02-18 19:36:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:36:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-02-18 19:36:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=8232, Unknown=0, NotChecked=0, Total=8556 [2023-02-18 19:36:09,123 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 93 states, 91 states have (on average 1.6923076923076923) internal successors, (154), 63 states have internal predecessors, (154), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) [2023-02-18 19:36:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:36:11,047 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2023-02-18 19:36:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-02-18 19:36:11,060 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 1.6923076923076923) internal successors, (154), 63 states have internal predecessors, (154), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) Word has length 194 [2023-02-18 19:36:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:36:11,073 INFO L225 Difference]: With dead ends: 183 [2023-02-18 19:36:11,074 INFO L226 Difference]: Without dead ends: 179 [2023-02-18 19:36:11,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 292 SyntacticMatches, 116 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1285, Invalid=20177, Unknown=0, NotChecked=0, Total=21462 [2023-02-18 19:36:11,077 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 109 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 19:36:11,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1727 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 19:36:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-02-18 19:36:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 102. [2023-02-18 19:36:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2023-02-18 19:36:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2023-02-18 19:36:11,081 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 194 [2023-02-18 19:36:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:36:11,081 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2023-02-18 19:36:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 1.6923076923076923) internal successors, (154), 63 states have internal predecessors, (154), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) [2023-02-18 19:36:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2023-02-18 19:36:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-02-18 19:36:11,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:36:11,082 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:36:11,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-02-18 19:36:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:11,293 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:36:11,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:36:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1458999816, now seen corresponding path program 13 times [2023-02-18 19:36:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:36:11,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547707462] [2023-02-18 19:36:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:36:11,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:36:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:13,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-18 19:36:16,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:36:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547707462] [2023-02-18 19:36:16,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547707462] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:36:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431070613] [2023-02-18 19:36:16,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:36:16,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:16,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:36:16,208 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:36:16,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-02-18 19:36:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:17,217 WARN L261 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 232 conjunts are in the unsatisfiable core [2023-02-18 19:36:17,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:36:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-18 19:36:19,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:36:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-02-18 19:36:21,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431070613] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:36:21,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:36:21,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 87] total 95 [2023-02-18 19:36:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373737707] [2023-02-18 19:36:21,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:36:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-02-18 19:36:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:36:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-02-18 19:36:21,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8600, Unknown=0, NotChecked=0, Total=8930 [2023-02-18 19:36:21,933 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 95 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 64 states have internal predecessors, (158), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) [2023-02-18 19:36:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:36:25,349 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2023-02-18 19:36:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-02-18 19:36:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 64 states have internal predecessors, (158), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) Word has length 201 [2023-02-18 19:36:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:36:25,350 INFO L225 Difference]: With dead ends: 189 [2023-02-18 19:36:25,350 INFO L226 Difference]: Without dead ends: 185 [2023-02-18 19:36:25,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 308 SyntacticMatches, 116 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3008 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1385, Invalid=21567, Unknown=0, NotChecked=0, Total=22952 [2023-02-18 19:36:25,352 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 55 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 3847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:36:25,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1874 Invalid, 3847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-18 19:36:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-02-18 19:36:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 105. [2023-02-18 19:36:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 30 states have call predecessors, (31), 3 states have call successors, (31) [2023-02-18 19:36:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2023-02-18 19:36:25,355 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 201 [2023-02-18 19:36:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:36:25,355 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2023-02-18 19:36:25,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 64 states have internal predecessors, (158), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) [2023-02-18 19:36:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2023-02-18 19:36:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-02-18 19:36:25,356 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:36:25,356 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:36:25,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-02-18 19:36:25,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-02-18 19:36:25,566 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:36:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:36:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash -941688870, now seen corresponding path program 14 times [2023-02-18 19:36:25,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:36:25,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690099067] [2023-02-18 19:36:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:36:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:36:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:27,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-02-18 19:36:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:36:30,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690099067] [2023-02-18 19:36:30,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690099067] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:36:30,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726883891] [2023-02-18 19:36:30,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:36:30,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:30,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:36:30,897 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:36:30,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-02-18 19:36:32,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:36:32,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:36:32,058 WARN L261 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 240 conjunts are in the unsatisfiable core [2023-02-18 19:36:32,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:36:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-02-18 19:36:33,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:36:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-02-18 19:36:35,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726883891] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:36:35,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:36:35,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 90] total 99 [2023-02-18 19:36:35,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999345408] [2023-02-18 19:36:35,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:36:35,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-02-18 19:36:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:36:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-02-18 19:36:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=9356, Unknown=0, NotChecked=0, Total=9702 [2023-02-18 19:36:35,267 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 67 states have internal predecessors, (164), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) [2023-02-18 19:36:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:36:37,519 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2023-02-18 19:36:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-02-18 19:36:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 67 states have internal predecessors, (164), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) Word has length 208 [2023-02-18 19:36:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:36:37,520 INFO L225 Difference]: With dead ends: 195 [2023-02-18 19:36:37,520 INFO L226 Difference]: Without dead ends: 191 [2023-02-18 19:36:37,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 314 SyntacticMatches, 124 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3487 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1436, Invalid=23056, Unknown=0, NotChecked=0, Total=24492 [2023-02-18 19:36:37,523 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 161 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:36:37,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1935 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 19:36:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-02-18 19:36:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 108. [2023-02-18 19:36:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) [2023-02-18 19:36:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2023-02-18 19:36:37,527 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 208 [2023-02-18 19:36:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:36:37,527 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2023-02-18 19:36:37,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 67 states have internal predecessors, (164), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) [2023-02-18 19:36:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2023-02-18 19:36:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-02-18 19:36:37,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:36:37,528 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:36:37,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-02-18 19:36:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:37,737 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:36:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:36:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash 482690706, now seen corresponding path program 14 times [2023-02-18 19:36:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:36:37,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92209500] [2023-02-18 19:36:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:36:37,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:36:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:38,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:41,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:42,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-02-18 19:36:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:36:43,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92209500] [2023-02-18 19:36:43,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92209500] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:36:43,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596810318] [2023-02-18 19:36:43,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:36:43,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:36:43,591 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:36:43,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-02-18 19:36:44,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:36:44,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:36:44,690 WARN L261 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 248 conjunts are in the unsatisfiable core [2023-02-18 19:36:44,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:36:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-02-18 19:36:46,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:36:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-02-18 19:36:48,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596810318] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:36:48,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:36:48,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 93] total 101 [2023-02-18 19:36:48,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927067277] [2023-02-18 19:36:48,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:36:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-02-18 19:36:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:36:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-02-18 19:36:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9748, Unknown=0, NotChecked=0, Total=10100 [2023-02-18 19:36:48,566 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 101 states, 100 states have (on average 1.68) internal successors, (168), 68 states have internal predecessors, (168), 33 states have call successors, (33), 1 states have call predecessors, (33), 31 states have return successors, (61), 33 states have call predecessors, (61), 33 states have call successors, (61) [2023-02-18 19:36:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:36:51,754 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2023-02-18 19:36:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-18 19:36:51,754 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.68) internal successors, (168), 68 states have internal predecessors, (168), 33 states have call successors, (33), 1 states have call predecessors, (33), 31 states have return successors, (61), 33 states have call predecessors, (61), 33 states have call successors, (61) Word has length 215 [2023-02-18 19:36:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:36:51,757 INFO L225 Difference]: With dead ends: 201 [2023-02-18 19:36:51,757 INFO L226 Difference]: Without dead ends: 197 [2023-02-18 19:36:51,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 329 SyntacticMatches, 125 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3404 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1542, Invalid=24540, Unknown=0, NotChecked=0, Total=26082 [2023-02-18 19:36:51,762 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 83 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 4651 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 4680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:36:51,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2353 Invalid, 4680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4651 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-18 19:36:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-18 19:36:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 111. [2023-02-18 19:36:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 32 states have return successors, (33), 32 states have call predecessors, (33), 3 states have call successors, (33) [2023-02-18 19:36:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2023-02-18 19:36:51,766 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 215 [2023-02-18 19:36:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:36:51,767 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2023-02-18 19:36:51,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.68) internal successors, (168), 68 states have internal predecessors, (168), 33 states have call successors, (33), 1 states have call predecessors, (33), 31 states have return successors, (61), 33 states have call predecessors, (61), 33 states have call successors, (61) [2023-02-18 19:36:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2023-02-18 19:36:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-02-18 19:36:51,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:36:51,768 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:36:51,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-02-18 19:36:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:51,980 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:36:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:36:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash 837482372, now seen corresponding path program 15 times [2023-02-18 19:36:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:36:51,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456405032] [2023-02-18 19:36:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:36:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:36:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:55,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:36:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:36:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-02-18 19:36:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:36:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456405032] [2023-02-18 19:36:58,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456405032] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:36:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962166155] [2023-02-18 19:36:58,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:36:58,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:36:58,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:36:58,354 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:36:58,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-02-18 19:36:59,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-02-18 19:36:59,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:36:59,723 WARN L261 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 256 conjunts are in the unsatisfiable core [2023-02-18 19:36:59,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:37:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-02-18 19:37:00,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:37:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-02-18 19:37:03,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962166155] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:37:03,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:37:03,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 96] total 105 [2023-02-18 19:37:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076163443] [2023-02-18 19:37:03,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:37:03,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-02-18 19:37:03,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:37:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-02-18 19:37:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=10552, Unknown=0, NotChecked=0, Total=10920 [2023-02-18 19:37:03,437 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 105 states, 103 states have (on average 1.6893203883495145) internal successors, (174), 71 states have internal predecessors, (174), 35 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (63), 34 states have call predecessors, (63), 35 states have call successors, (63) [2023-02-18 19:37:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:37:06,262 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2023-02-18 19:37:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-02-18 19:37:06,263 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 103 states have (on average 1.6893203883495145) internal successors, (174), 71 states have internal predecessors, (174), 35 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (63), 34 states have call predecessors, (63), 35 states have call successors, (63) Word has length 222 [2023-02-18 19:37:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:37:06,264 INFO L225 Difference]: With dead ends: 207 [2023-02-18 19:37:06,264 INFO L226 Difference]: Without dead ends: 203 [2023-02-18 19:37:06,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 337 SyntacticMatches, 131 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3908 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1595, Invalid=26127, Unknown=0, NotChecked=0, Total=27722 [2023-02-18 19:37:06,266 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 242 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 3960 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-18 19:37:06,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 2121 Invalid, 4155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3960 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-18 19:37:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-18 19:37:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 114. [2023-02-18 19:37:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 33 states have call predecessors, (34), 3 states have call successors, (34) [2023-02-18 19:37:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2023-02-18 19:37:06,272 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 222 [2023-02-18 19:37:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:37:06,272 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2023-02-18 19:37:06,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 103 states have (on average 1.6893203883495145) internal successors, (174), 71 states have internal predecessors, (174), 35 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (63), 34 states have call predecessors, (63), 35 states have call successors, (63) [2023-02-18 19:37:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2023-02-18 19:37:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-02-18 19:37:06,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:37:06,274 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:37:06,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-02-18 19:37:06,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:37:06,485 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:37:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:37:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1020068268, now seen corresponding path program 15 times [2023-02-18 19:37:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:37:06,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260745706] [2023-02-18 19:37:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:37:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:37:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-02-18 19:37:13,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:37:13,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260745706] [2023-02-18 19:37:13,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260745706] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:37:13,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550766460] [2023-02-18 19:37:13,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:37:13,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:37:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:37:13,213 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:37:13,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-02-18 19:37:14,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-02-18 19:37:14,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:37:14,435 WARN L261 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 264 conjunts are in the unsatisfiable core [2023-02-18 19:37:14,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:37:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-02-18 19:37:15,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:37:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-02-18 19:37:18,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550766460] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:37:18,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:37:18,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 99] total 108 [2023-02-18 19:37:18,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413600716] [2023-02-18 19:37:18,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:37:18,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-02-18 19:37:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:37:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-02-18 19:37:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=11178, Unknown=0, NotChecked=0, Total=11556 [2023-02-18 19:37:18,692 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 108 states, 106 states have (on average 1.6886792452830188) internal successors, (179), 73 states have internal predecessors, (179), 36 states have call successors, (36), 1 states have call predecessors, (36), 33 states have return successors, (65), 35 states have call predecessors, (65), 36 states have call successors, (65) [2023-02-18 19:37:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:37:22,605 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2023-02-18 19:37:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-02-18 19:37:22,605 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 106 states have (on average 1.6886792452830188) internal successors, (179), 73 states have internal predecessors, (179), 36 states have call successors, (36), 1 states have call predecessors, (36), 33 states have return successors, (65), 35 states have call predecessors, (65), 36 states have call successors, (65) Word has length 229 [2023-02-18 19:37:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:37:22,606 INFO L225 Difference]: With dead ends: 213 [2023-02-18 19:37:22,606 INFO L226 Difference]: Without dead ends: 209 [2023-02-18 19:37:22,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 348 SyntacticMatches, 135 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4025 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1712, Invalid=28044, Unknown=0, NotChecked=0, Total=29756 [2023-02-18 19:37:22,610 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 4729 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 4754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:37:22,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2452 Invalid, 4754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 4729 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-18 19:37:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-02-18 19:37:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 117. [2023-02-18 19:37:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 80 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 34 states have call predecessors, (35), 3 states have call successors, (35) [2023-02-18 19:37:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2023-02-18 19:37:22,615 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 229 [2023-02-18 19:37:22,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:37:22,616 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2023-02-18 19:37:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 106 states have (on average 1.6886792452830188) internal successors, (179), 73 states have internal predecessors, (179), 36 states have call successors, (36), 1 states have call predecessors, (36), 33 states have return successors, (65), 35 states have call predecessors, (65), 36 states have call successors, (65) [2023-02-18 19:37:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2023-02-18 19:37:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-02-18 19:37:22,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:37:22,617 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:37:22,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-02-18 19:37:22,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-02-18 19:37:22,829 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:37:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:37:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1968238162, now seen corresponding path program 16 times [2023-02-18 19:37:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:37:22,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586055373] [2023-02-18 19:37:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:37:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:37:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:25,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:27,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2023-02-18 19:37:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:37:30,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586055373] [2023-02-18 19:37:30,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586055373] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:37:30,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661749630] [2023-02-18 19:37:30,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:37:30,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:37:30,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:37:30,074 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:37:30,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-02-18 19:37:31,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:37:31,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:37:31,244 WARN L261 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 272 conjunts are in the unsatisfiable core [2023-02-18 19:37:31,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:37:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2023-02-18 19:37:32,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:37:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 1504 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-02-18 19:37:35,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661749630] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:37:35,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:37:35,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 102] total 111 [2023-02-18 19:37:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166201190] [2023-02-18 19:37:35,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:37:35,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2023-02-18 19:37:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:37:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2023-02-18 19:37:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=11820, Unknown=0, NotChecked=0, Total=12210 [2023-02-18 19:37:35,263 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 111 states, 109 states have (on average 1.688073394495413) internal successors, (184), 75 states have internal predecessors, (184), 37 states have call successors, (37), 1 states have call predecessors, (37), 34 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) [2023-02-18 19:37:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:37:38,684 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2023-02-18 19:37:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-02-18 19:37:38,684 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 109 states have (on average 1.688073394495413) internal successors, (184), 75 states have internal predecessors, (184), 37 states have call successors, (37), 1 states have call predecessors, (37), 34 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) Word has length 236 [2023-02-18 19:37:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:37:38,688 INFO L225 Difference]: With dead ends: 219 [2023-02-18 19:37:38,688 INFO L226 Difference]: Without dead ends: 215 [2023-02-18 19:37:38,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 360 SyntacticMatches, 138 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4317 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1762, Invalid=29390, Unknown=0, NotChecked=0, Total=31152 [2023-02-18 19:37:38,693 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 4801 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:37:38,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2581 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4801 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-18 19:37:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-02-18 19:37:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2023-02-18 19:37:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 3 states have call successors, (3), 2 states have call predecessors, (3), 35 states have return successors, (36), 35 states have call predecessors, (36), 3 states have call successors, (36) [2023-02-18 19:37:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2023-02-18 19:37:38,723 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 236 [2023-02-18 19:37:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:37:38,723 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2023-02-18 19:37:38,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 109 states have (on average 1.688073394495413) internal successors, (184), 75 states have internal predecessors, (184), 37 states have call successors, (37), 1 states have call predecessors, (37), 34 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) [2023-02-18 19:37:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2023-02-18 19:37:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-02-18 19:37:38,725 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:37:38,725 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:37:38,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-02-18 19:37:38,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-02-18 19:37:38,925 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:37:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:37:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash 193478470, now seen corresponding path program 16 times [2023-02-18 19:37:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:37:38,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073836948] [2023-02-18 19:37:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:37:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:37:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:43,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:45,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-02-18 19:37:46,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:37:46,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073836948] [2023-02-18 19:37:46,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073836948] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:37:46,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667137494] [2023-02-18 19:37:46,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:37:46,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:37:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:37:46,642 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:37:46,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-02-18 19:37:47,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:37:47,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:37:47,935 WARN L261 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 280 conjunts are in the unsatisfiable core [2023-02-18 19:37:47,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:37:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-02-18 19:37:49,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:37:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-02-18 19:37:51,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667137494] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:37:51,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:37:51,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 74, 105] total 113 [2023-02-18 19:37:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789774455] [2023-02-18 19:37:51,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:37:51,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-02-18 19:37:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:37:51,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-02-18 19:37:51,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=12260, Unknown=0, NotChecked=0, Total=12656 [2023-02-18 19:37:51,959 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 113 states, 112 states have (on average 1.6785714285714286) internal successors, (188), 76 states have internal predecessors, (188), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (69), 37 states have call predecessors, (69), 37 states have call successors, (69) [2023-02-18 19:37:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:37:56,428 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2023-02-18 19:37:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-02-18 19:37:56,429 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.6785714285714286) internal successors, (188), 76 states have internal predecessors, (188), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (69), 37 states have call predecessors, (69), 37 states have call successors, (69) Word has length 243 [2023-02-18 19:37:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:37:56,430 INFO L225 Difference]: With dead ends: 225 [2023-02-18 19:37:56,430 INFO L226 Difference]: Without dead ends: 221 [2023-02-18 19:37:56,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 371 SyntacticMatches, 143 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4129 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1880, Invalid=31062, Unknown=0, NotChecked=0, Total=32942 [2023-02-18 19:37:56,433 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 74 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 5320 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 5346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-18 19:37:56,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2800 Invalid, 5346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 5320 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-18 19:37:56,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-02-18 19:37:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 123. [2023-02-18 19:37:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 3 states have call successors, (3), 2 states have call predecessors, (3), 36 states have return successors, (37), 36 states have call predecessors, (37), 3 states have call successors, (37) [2023-02-18 19:37:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2023-02-18 19:37:56,437 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 243 [2023-02-18 19:37:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:37:56,437 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2023-02-18 19:37:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.6785714285714286) internal successors, (188), 76 states have internal predecessors, (188), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (69), 37 states have call predecessors, (69), 37 states have call successors, (69) [2023-02-18 19:37:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2023-02-18 19:37:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-02-18 19:37:56,438 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:37:56,438 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:37:56,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-02-18 19:37:56,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:37:56,639 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:37:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:37:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1478616664, now seen corresponding path program 17 times [2023-02-18 19:37:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:37:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014267372] [2023-02-18 19:37:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:37:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:37:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:59,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:37:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:37:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:02,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:03,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2023-02-18 19:38:05,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:38:05,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014267372] [2023-02-18 19:38:05,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014267372] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:38:05,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484609989] [2023-02-18 19:38:05,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:38:05,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:38:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:38:05,147 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:38:05,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-02-18 19:38:06,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-18 19:38:06,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:38:06,406 WARN L261 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 288 conjunts are in the unsatisfiable core [2023-02-18 19:38:06,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:38:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2023-02-18 19:38:07,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:38:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 1700 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-02-18 19:38:10,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484609989] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:38:10,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:38:10,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 108] total 117 [2023-02-18 19:38:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123958388] [2023-02-18 19:38:10,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:38:10,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2023-02-18 19:38:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:38:10,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2023-02-18 19:38:10,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=13160, Unknown=0, NotChecked=0, Total=13572 [2023-02-18 19:38:10,447 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 117 states, 115 states have (on average 1.6869565217391305) internal successors, (194), 79 states have internal predecessors, (194), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (71), 38 states have call predecessors, (71), 39 states have call successors, (71) [2023-02-18 19:38:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:38:13,676 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2023-02-18 19:38:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-18 19:38:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 115 states have (on average 1.6869565217391305) internal successors, (194), 79 states have internal predecessors, (194), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (71), 38 states have call predecessors, (71), 39 states have call successors, (71) Word has length 250 [2023-02-18 19:38:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:38:13,693 INFO L225 Difference]: With dead ends: 231 [2023-02-18 19:38:13,693 INFO L226 Difference]: Without dead ends: 227 [2023-02-18 19:38:13,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 379 SyntacticMatches, 149 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4842 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1937, Invalid=32845, Unknown=0, NotChecked=0, Total=34782 [2023-02-18 19:38:13,699 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 222 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 5729 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 5910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 5729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:38:13,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2999 Invalid, 5910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 5729 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-18 19:38:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-02-18 19:38:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 126. [2023-02-18 19:38:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 37 states have return successors, (38), 37 states have call predecessors, (38), 3 states have call successors, (38) [2023-02-18 19:38:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2023-02-18 19:38:13,711 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 250 [2023-02-18 19:38:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:38:13,712 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2023-02-18 19:38:13,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 115 states have (on average 1.6869565217391305) internal successors, (194), 79 states have internal predecessors, (194), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (71), 38 states have call predecessors, (71), 39 states have call successors, (71) [2023-02-18 19:38:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2023-02-18 19:38:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-02-18 19:38:13,726 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:38:13,727 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:38:13,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-02-18 19:38:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-02-18 19:38:13,940 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:38:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:38:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1190748320, now seen corresponding path program 17 times [2023-02-18 19:38:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:38:13,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49864887] [2023-02-18 19:38:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:38:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:38:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:15,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2023-02-18 19:38:22,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:38:22,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49864887] [2023-02-18 19:38:22,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49864887] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:38:22,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068002840] [2023-02-18 19:38:22,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:38:22,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:38:22,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:38:22,910 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:38:22,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-02-18 19:38:24,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-18 19:38:24,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:38:24,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 296 conjunts are in the unsatisfiable core [2023-02-18 19:38:24,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:38:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2023-02-18 19:38:25,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:38:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 1802 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-02-18 19:38:28,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068002840] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:38:28,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:38:28,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 78, 111] total 119 [2023-02-18 19:38:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406361680] [2023-02-18 19:38:28,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:38:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-02-18 19:38:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:38:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-02-18 19:38:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=13624, Unknown=0, NotChecked=0, Total=14042 [2023-02-18 19:38:28,853 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 119 states, 118 states have (on average 1.6779661016949152) internal successors, (198), 80 states have internal predecessors, (198), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (73), 39 states have call predecessors, (73), 39 states have call successors, (73) [2023-02-18 19:38:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:38:32,633 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2023-02-18 19:38:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-18 19:38:32,633 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 1.6779661016949152) internal successors, (198), 80 states have internal predecessors, (198), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (73), 39 states have call predecessors, (73), 39 states have call successors, (73) Word has length 257 [2023-02-18 19:38:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:38:32,634 INFO L225 Difference]: With dead ends: 237 [2023-02-18 19:38:32,634 INFO L226 Difference]: Without dead ends: 233 [2023-02-18 19:38:32,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 392 SyntacticMatches, 152 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4589 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2061, Invalid=34611, Unknown=0, NotChecked=0, Total=36672 [2023-02-18 19:38:32,636 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 102 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 5501 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 5542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:38:32,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 2634 Invalid, 5542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 5501 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-18 19:38:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-18 19:38:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 129. [2023-02-18 19:38:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 38 states have return successors, (39), 38 states have call predecessors, (39), 3 states have call successors, (39) [2023-02-18 19:38:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2023-02-18 19:38:32,664 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 257 [2023-02-18 19:38:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:38:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2023-02-18 19:38:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 1.6779661016949152) internal successors, (198), 80 states have internal predecessors, (198), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (73), 39 states have call predecessors, (73), 39 states have call successors, (73) [2023-02-18 19:38:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2023-02-18 19:38:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-02-18 19:38:32,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:38:32,666 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:38:32,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-02-18 19:38:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-02-18 19:38:32,879 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:38:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:38:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1726092674, now seen corresponding path program 18 times [2023-02-18 19:38:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:38:32,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198239489] [2023-02-18 19:38:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:38:32,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:38:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:35,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:38,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-02-18 19:38:42,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:38:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198239489] [2023-02-18 19:38:42,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198239489] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:38:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355935466] [2023-02-18 19:38:42,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:38:42,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:38:42,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:38:42,750 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:38:42,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-02-18 19:38:44,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-02-18 19:38:44,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:38:44,285 WARN L261 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 304 conjunts are in the unsatisfiable core [2023-02-18 19:38:44,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:38:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-02-18 19:38:45,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:38:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 1908 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-02-18 19:38:49,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355935466] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:38:49,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:38:49,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 114] total 123 [2023-02-18 19:38:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299713988] [2023-02-18 19:38:49,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:38:49,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2023-02-18 19:38:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:38:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2023-02-18 19:38:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=14572, Unknown=0, NotChecked=0, Total=15006 [2023-02-18 19:38:49,028 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 123 states, 121 states have (on average 1.6859504132231404) internal successors, (204), 83 states have internal predecessors, (204), 41 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (75), 40 states have call predecessors, (75), 41 states have call successors, (75) [2023-02-18 19:38:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:38:52,824 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2023-02-18 19:38:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-02-18 19:38:52,824 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 121 states have (on average 1.6859504132231404) internal successors, (204), 83 states have internal predecessors, (204), 41 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (75), 40 states have call predecessors, (75), 41 states have call successors, (75) Word has length 264 [2023-02-18 19:38:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:38:52,825 INFO L225 Difference]: With dead ends: 243 [2023-02-18 19:38:52,825 INFO L226 Difference]: Without dead ends: 239 [2023-02-18 19:38:52,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 402 SyntacticMatches, 156 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5306 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2120, Invalid=36492, Unknown=0, NotChecked=0, Total=38612 [2023-02-18 19:38:52,829 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 333 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 5876 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 6121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 5876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-18 19:38:52,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2927 Invalid, 6121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 5876 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-18 19:38:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-02-18 19:38:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 132. [2023-02-18 19:38:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 39 states have return successors, (40), 39 states have call predecessors, (40), 3 states have call successors, (40) [2023-02-18 19:38:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2023-02-18 19:38:52,833 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 264 [2023-02-18 19:38:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:38:52,833 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2023-02-18 19:38:52,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 121 states have (on average 1.6859504132231404) internal successors, (204), 83 states have internal predecessors, (204), 41 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (75), 40 states have call predecessors, (75), 41 states have call successors, (75) [2023-02-18 19:38:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2023-02-18 19:38:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-02-18 19:38:52,834 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:38:52,834 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:38:52,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-02-18 19:38:53,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-02-18 19:38:53,067 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:38:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:38:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -50347526, now seen corresponding path program 18 times [2023-02-18 19:38:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:38:53,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328387156] [2023-02-18 19:38:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:38:53,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:38:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:38:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:38:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2023-02-18 19:39:03,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:39:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328387156] [2023-02-18 19:39:03,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328387156] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:39:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754446239] [2023-02-18 19:39:03,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:39:03,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:39:03,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:39:03,334 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:39:03,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-02-18 19:39:04,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-02-18 19:39:04,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:39:04,806 WARN L261 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 312 conjunts are in the unsatisfiable core [2023-02-18 19:39:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:39:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2023-02-18 19:39:06,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:39:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-02-18 19:39:09,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754446239] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:39:09,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:39:09,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 117] total 126 [2023-02-18 19:39:09,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064319338] [2023-02-18 19:39:09,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:39:09,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-02-18 19:39:09,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:39:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-02-18 19:39:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=15306, Unknown=0, NotChecked=0, Total=15750 [2023-02-18 19:39:09,723 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 126 states, 124 states have (on average 1.685483870967742) internal successors, (209), 85 states have internal predecessors, (209), 42 states have call successors, (42), 1 states have call predecessors, (42), 39 states have return successors, (77), 41 states have call predecessors, (77), 42 states have call successors, (77) [2023-02-18 19:39:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:39:14,646 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2023-02-18 19:39:14,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-02-18 19:39:14,646 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 124 states have (on average 1.685483870967742) internal successors, (209), 85 states have internal predecessors, (209), 42 states have call successors, (42), 1 states have call predecessors, (42), 39 states have return successors, (77), 41 states have call predecessors, (77), 42 states have call successors, (77) Word has length 271 [2023-02-18 19:39:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:39:14,647 INFO L225 Difference]: With dead ends: 249 [2023-02-18 19:39:14,648 INFO L226 Difference]: Without dead ends: 245 [2023-02-18 19:39:14,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 416 SyntacticMatches, 157 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2255, Invalid=38751, Unknown=0, NotChecked=0, Total=41006 [2023-02-18 19:39:14,653 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 112 mSDsluCounter, 3306 mSDsCounter, 0 mSdLazyCounter, 6474 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 6474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:39:14,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 3356 Invalid, 6516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 6474 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-18 19:39:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-02-18 19:39:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 135. [2023-02-18 19:39:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 91 states have (on average 1.021978021978022) internal successors, (93), 92 states have internal predecessors, (93), 3 states have call successors, (3), 2 states have call predecessors, (3), 40 states have return successors, (41), 40 states have call predecessors, (41), 3 states have call successors, (41) [2023-02-18 19:39:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2023-02-18 19:39:14,657 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 271 [2023-02-18 19:39:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:39:14,657 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2023-02-18 19:39:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 124 states have (on average 1.685483870967742) internal successors, (209), 85 states have internal predecessors, (209), 42 states have call successors, (42), 1 states have call predecessors, (42), 39 states have return successors, (77), 41 states have call predecessors, (77), 42 states have call successors, (77) [2023-02-18 19:39:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2023-02-18 19:39:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-02-18 19:39:14,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:39:14,659 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:39:14,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-02-18 19:39:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:39:14,873 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:39:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:39:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash -197771476, now seen corresponding path program 19 times [2023-02-18 19:39:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:39:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766633637] [2023-02-18 19:39:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:39:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:39:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2023-02-18 19:39:26,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:39:26,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766633637] [2023-02-18 19:39:26,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766633637] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:39:26,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310562230] [2023-02-18 19:39:26,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:39:26,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:39:26,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:39:26,118 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:39:26,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-02-18 19:39:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:27,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 320 conjunts are in the unsatisfiable core [2023-02-18 19:39:27,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:39:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2023-02-18 19:39:29,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:39:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 2128 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-02-18 19:39:32,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310562230] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:39:32,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:39:32,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 120] total 129 [2023-02-18 19:39:32,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330526364] [2023-02-18 19:39:32,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:39:32,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-02-18 19:39:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:39:32,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-02-18 19:39:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=16056, Unknown=0, NotChecked=0, Total=16512 [2023-02-18 19:39:32,547 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 129 states, 127 states have (on average 1.68503937007874) internal successors, (214), 87 states have internal predecessors, (214), 43 states have call successors, (43), 1 states have call predecessors, (43), 40 states have return successors, (79), 42 states have call predecessors, (79), 43 states have call successors, (79) [2023-02-18 19:39:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:39:36,421 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2023-02-18 19:39:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-02-18 19:39:36,421 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 127 states have (on average 1.68503937007874) internal successors, (214), 87 states have internal predecessors, (214), 43 states have call successors, (43), 1 states have call predecessors, (43), 40 states have return successors, (79), 42 states have call predecessors, (79), 43 states have call successors, (79) Word has length 278 [2023-02-18 19:39:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:39:36,422 INFO L225 Difference]: With dead ends: 255 [2023-02-18 19:39:36,422 INFO L226 Difference]: Without dead ends: 251 [2023-02-18 19:39:36,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 422 SyntacticMatches, 166 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2311, Invalid=40331, Unknown=0, NotChecked=0, Total=42642 [2023-02-18 19:39:36,427 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 203 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 6608 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 6755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 6608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:39:36,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 3534 Invalid, 6755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 6608 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-18 19:39:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-18 19:39:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 138. [2023-02-18 19:39:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 41 states have call predecessors, (42), 3 states have call successors, (42) [2023-02-18 19:39:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2023-02-18 19:39:36,431 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 278 [2023-02-18 19:39:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:39:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2023-02-18 19:39:36,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 127 states have (on average 1.68503937007874) internal successors, (214), 87 states have internal predecessors, (214), 43 states have call successors, (43), 1 states have call predecessors, (43), 40 states have return successors, (79), 42 states have call predecessors, (79), 43 states have call successors, (79) [2023-02-18 19:39:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2023-02-18 19:39:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-02-18 19:39:36,433 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:39:36,433 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:39:36,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-02-18 19:39:36,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:39:36,652 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:39:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:39:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash -254589164, now seen corresponding path program 19 times [2023-02-18 19:39:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:39:36,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611477623] [2023-02-18 19:39:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:39:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:39:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:39:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2023-02-18 19:39:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:39:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611477623] [2023-02-18 19:39:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611477623] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:39:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579449016] [2023-02-18 19:39:48,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:39:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:39:48,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:39:48,338 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:39:48,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-02-18 19:39:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:39:49,940 WARN L261 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 328 conjunts are in the unsatisfiable core [2023-02-18 19:39:49,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:39:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2023-02-18 19:39:51,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:39:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 2242 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 19:39:54,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579449016] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:39:54,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:39:54,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 86, 123] total 131 [2023-02-18 19:39:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336885868] [2023-02-18 19:39:54,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:39:54,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2023-02-18 19:39:54,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:39:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2023-02-18 19:39:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=16568, Unknown=0, NotChecked=0, Total=17030 [2023-02-18 19:39:54,980 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand has 131 states, 130 states have (on average 1.676923076923077) internal successors, (218), 88 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (81), 43 states have call predecessors, (81), 43 states have call successors, (81) [2023-02-18 19:40:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:40:00,318 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2023-02-18 19:40:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-02-18 19:40:00,318 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 1.676923076923077) internal successors, (218), 88 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (81), 43 states have call predecessors, (81), 43 states have call successors, (81) Word has length 285 [2023-02-18 19:40:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:40:00,319 INFO L225 Difference]: With dead ends: 261 [2023-02-18 19:40:00,319 INFO L226 Difference]: Without dead ends: 257 [2023-02-18 19:40:00,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 435 SyntacticMatches, 169 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5580 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2447, Invalid=42285, Unknown=0, NotChecked=0, Total=44732 [2023-02-18 19:40:00,323 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 7213 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 7232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-18 19:40:00,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3481 Invalid, 7232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7213 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-02-18 19:40:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-02-18 19:40:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 141. [2023-02-18 19:40:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 42 states have return successors, (43), 42 states have call predecessors, (43), 3 states have call successors, (43) [2023-02-18 19:40:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2023-02-18 19:40:00,327 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 285 [2023-02-18 19:40:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:40:00,327 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2023-02-18 19:40:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 1.676923076923077) internal successors, (218), 88 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (81), 43 states have call predecessors, (81), 43 states have call successors, (81) [2023-02-18 19:40:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2023-02-18 19:40:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-02-18 19:40:00,328 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:40:00,329 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:40:00,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-02-18 19:40:00,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-02-18 19:40:00,529 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:40:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:40:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1477247830, now seen corresponding path program 20 times [2023-02-18 19:40:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:40:00,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526108326] [2023-02-18 19:40:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:40:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:40:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:07,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2023-02-18 19:40:13,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:40:13,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526108326] [2023-02-18 19:40:13,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526108326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:40:13,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996207767] [2023-02-18 19:40:13,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:40:13,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:40:13,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:40:13,661 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:40:13,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-02-18 19:40:15,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:40:15,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:40:15,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 336 conjunts are in the unsatisfiable core [2023-02-18 19:40:15,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:40:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2023-02-18 19:40:17,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:40:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-02-18 19:40:21,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996207767] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:40:21,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:40:21,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 126] total 135 [2023-02-18 19:40:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269820282] [2023-02-18 19:40:21,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:40:21,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2023-02-18 19:40:21,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:40:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2023-02-18 19:40:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=17612, Unknown=0, NotChecked=0, Total=18090 [2023-02-18 19:40:21,442 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand has 135 states, 133 states have (on average 1.6842105263157894) internal successors, (224), 91 states have internal predecessors, (224), 45 states have call successors, (45), 1 states have call predecessors, (45), 42 states have return successors, (83), 44 states have call predecessors, (83), 45 states have call successors, (83) [2023-02-18 19:40:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:40:26,059 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2023-02-18 19:40:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-02-18 19:40:26,059 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 133 states have (on average 1.6842105263157894) internal successors, (224), 91 states have internal predecessors, (224), 45 states have call successors, (45), 1 states have call predecessors, (45), 42 states have return successors, (83), 44 states have call predecessors, (83), 45 states have call successors, (83) Word has length 292 [2023-02-18 19:40:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:40:26,060 INFO L225 Difference]: With dead ends: 267 [2023-02-18 19:40:26,061 INFO L226 Difference]: Without dead ends: 263 [2023-02-18 19:40:26,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 447 SyntacticMatches, 171 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2510, Invalid=44362, Unknown=0, NotChecked=0, Total=46872 [2023-02-18 19:40:26,066 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 357 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 7545 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 7828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 7545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:40:26,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 3953 Invalid, 7828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 7545 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-18 19:40:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-02-18 19:40:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 144. [2023-02-18 19:40:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 98 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 43 states have return successors, (44), 43 states have call predecessors, (44), 3 states have call successors, (44) [2023-02-18 19:40:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2023-02-18 19:40:26,071 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 292 [2023-02-18 19:40:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:40:26,071 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2023-02-18 19:40:26,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 133 states have (on average 1.6842105263157894) internal successors, (224), 91 states have internal predecessors, (224), 45 states have call successors, (45), 1 states have call predecessors, (45), 42 states have return successors, (83), 44 states have call predecessors, (83), 45 states have call successors, (83) [2023-02-18 19:40:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2023-02-18 19:40:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-02-18 19:40:26,073 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:40:26,073 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:40:26,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-02-18 19:40:26,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-02-18 19:40:26,286 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:40:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:40:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1770573486, now seen corresponding path program 20 times [2023-02-18 19:40:26,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:40:26,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097924691] [2023-02-18 19:40:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:40:26,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:40:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:28,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:39,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2023-02-18 19:40:39,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:40:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097924691] [2023-02-18 19:40:39,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097924691] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:40:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092216629] [2023-02-18 19:40:39,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:40:39,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:40:39,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:40:39,623 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:40:39,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-02-18 19:40:41,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:40:41,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:40:41,402 WARN L261 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 344 conjunts are in the unsatisfiable core [2023-02-18 19:40:41,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:40:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2023-02-18 19:40:43,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:40:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 2480 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-02-18 19:40:47,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092216629] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:40:47,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:40:47,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 90, 129] total 137 [2023-02-18 19:40:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288899681] [2023-02-18 19:40:47,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:40:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-02-18 19:40:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:40:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-02-18 19:40:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=18149, Unknown=0, NotChecked=0, Total=18632 [2023-02-18 19:40:47,749 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand has 137 states, 136 states have (on average 1.6764705882352942) internal successors, (228), 92 states have internal predecessors, (228), 45 states have call successors, (45), 1 states have call predecessors, (45), 43 states have return successors, (85), 45 states have call predecessors, (85), 45 states have call successors, (85) [2023-02-18 19:40:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:40:54,291 INFO L93 Difference]: Finished difference Result 273 states and 275 transitions. [2023-02-18 19:40:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-02-18 19:40:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 1.6764705882352942) internal successors, (228), 92 states have internal predecessors, (228), 45 states have call successors, (45), 1 states have call predecessors, (45), 43 states have return successors, (85), 45 states have call predecessors, (85), 45 states have call successors, (85) Word has length 299 [2023-02-18 19:40:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:40:54,292 INFO L225 Difference]: With dead ends: 273 [2023-02-18 19:40:54,292 INFO L226 Difference]: Without dead ends: 269 [2023-02-18 19:40:54,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 461 SyntacticMatches, 173 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5906 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=2651, Invalid=46411, Unknown=0, NotChecked=0, Total=49062 [2023-02-18 19:40:54,295 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 87 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 7771 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 7804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 7771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-18 19:40:54,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 3868 Invalid, 7804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 7771 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-18 19:40:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-02-18 19:40:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 147. [2023-02-18 19:40:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 44 states have return successors, (45), 44 states have call predecessors, (45), 3 states have call successors, (45) [2023-02-18 19:40:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2023-02-18 19:40:54,298 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 299 [2023-02-18 19:40:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:40:54,298 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2023-02-18 19:40:54,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 136 states have (on average 1.6764705882352942) internal successors, (228), 92 states have internal predecessors, (228), 45 states have call successors, (45), 1 states have call predecessors, (45), 43 states have return successors, (85), 45 states have call predecessors, (85), 45 states have call successors, (85) [2023-02-18 19:40:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2023-02-18 19:40:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-02-18 19:40:54,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:40:54,299 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:40:54,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-02-18 19:40:54,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-02-18 19:40:54,519 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:40:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:40:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 788333056, now seen corresponding path program 21 times [2023-02-18 19:40:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:40:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499515738] [2023-02-18 19:40:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:40:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:40:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:40:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:40:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:06,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2023-02-18 19:41:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:41:09,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499515738] [2023-02-18 19:41:09,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499515738] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:41:09,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231966559] [2023-02-18 19:41:09,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:41:09,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:41:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:41:09,451 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:41:09,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-02-18 19:41:11,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-02-18 19:41:11,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:41:11,273 WARN L261 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 352 conjunts are in the unsatisfiable core [2023-02-18 19:41:11,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:41:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2023-02-18 19:41:13,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:41:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 2604 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-02-18 19:41:17,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231966559] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:41:17,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:41:17,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92, 132] total 141 [2023-02-18 19:41:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492989181] [2023-02-18 19:41:17,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:41:17,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2023-02-18 19:41:17,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:41:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2023-02-18 19:41:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=19240, Unknown=0, NotChecked=0, Total=19740 [2023-02-18 19:41:17,795 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand has 141 states, 139 states have (on average 1.683453237410072) internal successors, (234), 95 states have internal predecessors, (234), 47 states have call successors, (47), 1 states have call predecessors, (47), 44 states have return successors, (87), 46 states have call predecessors, (87), 47 states have call successors, (87) [2023-02-18 19:41:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:41:23,639 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2023-02-18 19:41:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-02-18 19:41:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 139 states have (on average 1.683453237410072) internal successors, (234), 95 states have internal predecessors, (234), 47 states have call successors, (47), 1 states have call predecessors, (47), 44 states have return successors, (87), 46 states have call predecessors, (87), 47 states have call successors, (87) Word has length 306 [2023-02-18 19:41:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:41:23,643 INFO L225 Difference]: With dead ends: 279 [2023-02-18 19:41:23,643 INFO L226 Difference]: Without dead ends: 275 [2023-02-18 19:41:23,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 465 SyntacticMatches, 183 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7007 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=2717, Invalid=48585, Unknown=0, NotChecked=0, Total=51302 [2023-02-18 19:41:23,646 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 534 mSDsluCounter, 4216 mSDsCounter, 0 mSdLazyCounter, 7849 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 4271 SdHoareTripleChecker+Invalid, 8268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 7849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-18 19:41:23,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 4271 Invalid, 8268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 7849 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-18 19:41:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-18 19:41:23,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 150. [2023-02-18 19:41:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 45 states have call predecessors, (46), 3 states have call successors, (46) [2023-02-18 19:41:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2023-02-18 19:41:23,650 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 306 [2023-02-18 19:41:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:41:23,650 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2023-02-18 19:41:23,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 139 states have (on average 1.683453237410072) internal successors, (234), 95 states have internal predecessors, (234), 47 states have call successors, (47), 1 states have call predecessors, (47), 44 states have return successors, (87), 46 states have call predecessors, (87), 47 states have call successors, (87) [2023-02-18 19:41:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2023-02-18 19:41:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-02-18 19:41:23,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:41:23,652 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:41:23,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-02-18 19:41:23,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-02-18 19:41:23,870 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:41:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:41:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash -774899512, now seen corresponding path program 21 times [2023-02-18 19:41:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:41:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215579863] [2023-02-18 19:41:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:41:23,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:41:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:24,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2023-02-18 19:41:38,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:41:38,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215579863] [2023-02-18 19:41:38,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215579863] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:41:38,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870099784] [2023-02-18 19:41:38,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:41:38,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:41:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:41:38,912 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:41:38,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-02-18 19:41:40,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-02-18 19:41:40,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:41:40,996 WARN L261 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 360 conjunts are in the unsatisfiable core [2023-02-18 19:41:40,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:41:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2023-02-18 19:41:42,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:41:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-02-18 19:41:46,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870099784] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:41:46,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:41:46,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 94, 135] total 143 [2023-02-18 19:41:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905094657] [2023-02-18 19:41:46,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:41:46,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2023-02-18 19:41:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:41:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2023-02-18 19:41:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=19800, Unknown=0, NotChecked=0, Total=20306 [2023-02-18 19:41:46,861 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 143 states, 142 states have (on average 1.676056338028169) internal successors, (238), 96 states have internal predecessors, (238), 47 states have call successors, (47), 1 states have call predecessors, (47), 45 states have return successors, (89), 47 states have call predecessors, (89), 47 states have call successors, (89) [2023-02-18 19:41:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:41:51,776 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2023-02-18 19:41:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-02-18 19:41:51,776 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 142 states have (on average 1.676056338028169) internal successors, (238), 96 states have internal predecessors, (238), 47 states have call successors, (47), 1 states have call predecessors, (47), 45 states have return successors, (89), 47 states have call predecessors, (89), 47 states have call successors, (89) Word has length 313 [2023-02-18 19:41:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:41:51,793 INFO L225 Difference]: With dead ends: 285 [2023-02-18 19:41:51,793 INFO L226 Difference]: Without dead ends: 281 [2023-02-18 19:41:51,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 482 SyntacticMatches, 182 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6634 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2865, Invalid=50727, Unknown=0, NotChecked=0, Total=53592 [2023-02-18 19:41:51,807 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 133 mSDsluCounter, 4082 mSDsCounter, 0 mSdLazyCounter, 7988 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4138 SdHoareTripleChecker+Invalid, 8040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 7988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:41:51,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 4138 Invalid, 8040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 7988 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-18 19:41:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-02-18 19:41:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 153. [2023-02-18 19:41:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 104 states have internal predecessors, (105), 3 states have call successors, (3), 2 states have call predecessors, (3), 46 states have return successors, (47), 46 states have call predecessors, (47), 3 states have call successors, (47) [2023-02-18 19:41:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2023-02-18 19:41:51,811 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 313 [2023-02-18 19:41:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:41:51,821 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2023-02-18 19:41:51,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 142 states have (on average 1.676056338028169) internal successors, (238), 96 states have internal predecessors, (238), 47 states have call successors, (47), 1 states have call predecessors, (47), 45 states have return successors, (89), 47 states have call predecessors, (89), 47 states have call successors, (89) [2023-02-18 19:41:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2023-02-18 19:41:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-02-18 19:41:51,823 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:41:51,823 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:41:51,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-02-18 19:41:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:41:52,044 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:41:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:41:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash 71621418, now seen corresponding path program 22 times [2023-02-18 19:41:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:41:52,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676787714] [2023-02-18 19:41:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:41:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:41:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:41:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:41:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:03,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2023-02-18 19:42:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:42:08,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676787714] [2023-02-18 19:42:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676787714] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:42:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570501375] [2023-02-18 19:42:08,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:42:08,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:42:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:42:08,079 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:42:08,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-02-18 19:42:10,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:42:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:42:10,030 WARN L261 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 368 conjunts are in the unsatisfiable core [2023-02-18 19:42:10,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:42:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2023-02-18 19:42:12,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:42:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 2860 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-02-18 19:42:18,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570501375] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:42:18,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:42:18,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 138] total 147 [2023-02-18 19:42:18,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190452990] [2023-02-18 19:42:18,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:42:18,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2023-02-18 19:42:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:42:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2023-02-18 19:42:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=20940, Unknown=0, NotChecked=0, Total=21462 [2023-02-18 19:42:18,522 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 147 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 99 states have internal predecessors, (244), 49 states have call successors, (49), 1 states have call predecessors, (49), 46 states have return successors, (91), 48 states have call predecessors, (91), 49 states have call successors, (91) [2023-02-18 19:42:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:42:25,392 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2023-02-18 19:42:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-18 19:42:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 99 states have internal predecessors, (244), 49 states have call successors, (49), 1 states have call predecessors, (49), 46 states have return successors, (91), 48 states have call predecessors, (91), 49 states have call successors, (91) Word has length 320 [2023-02-18 19:42:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:42:25,393 INFO L225 Difference]: With dead ends: 291 [2023-02-18 19:42:25,393 INFO L226 Difference]: Without dead ends: 287 [2023-02-18 19:42:25,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 487 SyntacticMatches, 191 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7605 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=2932, Invalid=53000, Unknown=0, NotChecked=0, Total=55932 [2023-02-18 19:42:25,397 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 307 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 7711 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 7950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 7711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-18 19:42:25,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 4095 Invalid, 7950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 7711 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-18 19:42:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-02-18 19:42:25,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 156. [2023-02-18 19:42:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 47 states have return successors, (48), 47 states have call predecessors, (48), 3 states have call successors, (48) [2023-02-18 19:42:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2023-02-18 19:42:25,400 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 320 [2023-02-18 19:42:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:42:25,401 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2023-02-18 19:42:25,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 99 states have internal predecessors, (244), 49 states have call successors, (49), 1 states have call predecessors, (49), 46 states have return successors, (91), 48 states have call predecessors, (91), 49 states have call successors, (91) [2023-02-18 19:42:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2023-02-18 19:42:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-02-18 19:42:25,402 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:42:25,402 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:42:25,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-02-18 19:42:25,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-02-18 19:42:25,603 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:42:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:42:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2080348830, now seen corresponding path program 22 times [2023-02-18 19:42:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:42:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101206289] [2023-02-18 19:42:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:42:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:42:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:28,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:29,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:33,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:39,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:39,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:42,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:42:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:42:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2023-02-18 19:42:42,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:42:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101206289] [2023-02-18 19:42:42,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101206289] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:42:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898143409] [2023-02-18 19:42:42,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:42:42,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:42:42,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:42:42,290 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:42:42,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-02-18 19:42:44,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:42:44,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:42:44,365 WARN L261 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 376 conjunts are in the unsatisfiable core [2023-02-18 19:42:44,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:42:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2023-02-18 19:42:47,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:42:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 0 proven. 2992 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-02-18 19:42:53,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898143409] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:42:53,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:42:53,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 141] total 149 [2023-02-18 19:42:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447324794] [2023-02-18 19:42:53,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:42:53,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-02-18 19:42:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:42:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-02-18 19:42:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=21524, Unknown=0, NotChecked=0, Total=22052 [2023-02-18 19:42:53,291 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand has 149 states, 148 states have (on average 1.6756756756756757) internal successors, (248), 100 states have internal predecessors, (248), 49 states have call successors, (49), 1 states have call predecessors, (49), 47 states have return successors, (93), 49 states have call predecessors, (93), 49 states have call successors, (93) [2023-02-18 19:42:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:42:59,815 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2023-02-18 19:42:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-18 19:42:59,815 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 1.6756756756756757) internal successors, (248), 100 states have internal predecessors, (248), 49 states have call successors, (49), 1 states have call predecessors, (49), 47 states have return successors, (93), 49 states have call predecessors, (93), 49 states have call successors, (93) Word has length 327 [2023-02-18 19:42:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:42:59,816 INFO L225 Difference]: With dead ends: 297 [2023-02-18 19:42:59,816 INFO L226 Difference]: Without dead ends: 293 [2023-02-18 19:42:59,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 500 SyntacticMatches, 194 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7447 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3086, Invalid=55236, Unknown=0, NotChecked=0, Total=58322 [2023-02-18 19:42:59,822 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 103 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 8859 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 8897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 8859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-18 19:42:59,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 4205 Invalid, 8897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 8859 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-18 19:42:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-02-18 19:42:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 159. [2023-02-18 19:42:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 48 states have return successors, (49), 48 states have call predecessors, (49), 3 states have call successors, (49) [2023-02-18 19:42:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2023-02-18 19:42:59,826 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 327 [2023-02-18 19:42:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:42:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2023-02-18 19:42:59,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 1.6756756756756757) internal successors, (248), 100 states have internal predecessors, (248), 49 states have call successors, (49), 1 states have call predecessors, (49), 47 states have return successors, (93), 49 states have call predecessors, (93), 49 states have call successors, (93) [2023-02-18 19:42:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2023-02-18 19:42:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-02-18 19:42:59,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:42:59,828 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:42:59,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-02-18 19:43:00,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-02-18 19:43:00,041 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:43:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:43:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2076913364, now seen corresponding path program 23 times [2023-02-18 19:43:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:43:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114253468] [2023-02-18 19:43:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:43:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:43:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:07,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:10,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:11,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:13,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 2093 trivial. 0 not checked. [2023-02-18 19:43:18,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:43:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114253468] [2023-02-18 19:43:18,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114253468] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:43:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884255745] [2023-02-18 19:43:18,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:43:18,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:43:18,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:43:18,090 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:43:18,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-02-18 19:43:20,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-02-18 19:43:20,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:43:20,406 WARN L261 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 384 conjunts are in the unsatisfiable core [2023-02-18 19:43:20,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:43:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 2093 trivial. 0 not checked. [2023-02-18 19:43:22,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:43:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 0 proven. 3128 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-02-18 19:43:27,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884255745] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:43:27,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:43:27,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 144] total 153 [2023-02-18 19:43:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626629239] [2023-02-18 19:43:27,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:43:27,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2023-02-18 19:43:27,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:43:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2023-02-18 19:43:27,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=22712, Unknown=0, NotChecked=0, Total=23256 [2023-02-18 19:43:27,855 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand has 153 states, 151 states have (on average 1.6821192052980132) internal successors, (254), 103 states have internal predecessors, (254), 51 states have call successors, (51), 1 states have call predecessors, (51), 48 states have return successors, (95), 50 states have call predecessors, (95), 51 states have call successors, (95) [2023-02-18 19:43:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:43:33,676 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2023-02-18 19:43:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-02-18 19:43:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 151 states have (on average 1.6821192052980132) internal successors, (254), 103 states have internal predecessors, (254), 51 states have call successors, (51), 1 states have call predecessors, (51), 48 states have return successors, (95), 50 states have call predecessors, (95), 51 states have call successors, (95) Word has length 334 [2023-02-18 19:43:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:43:33,678 INFO L225 Difference]: With dead ends: 303 [2023-02-18 19:43:33,678 INFO L226 Difference]: Without dead ends: 299 [2023-02-18 19:43:33,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 510 SyntacticMatches, 198 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8205 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3155, Invalid=57607, Unknown=0, NotChecked=0, Total=60762 [2023-02-18 19:43:33,683 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 100 mSDsluCounter, 5575 mSDsCounter, 0 mSdLazyCounter, 10967 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 10984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 10967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:43:33,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5634 Invalid, 10984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 10967 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-18 19:43:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-02-18 19:43:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 162. [2023-02-18 19:43:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 109 states have (on average 1.018348623853211) internal successors, (111), 110 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 49 states have call predecessors, (50), 3 states have call successors, (50) [2023-02-18 19:43:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2023-02-18 19:43:33,688 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 334 [2023-02-18 19:43:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:43:33,688 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2023-02-18 19:43:33,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 151 states have (on average 1.6821192052980132) internal successors, (254), 103 states have internal predecessors, (254), 51 states have call successors, (51), 1 states have call predecessors, (51), 48 states have return successors, (95), 50 states have call predecessors, (95), 51 states have call successors, (95) [2023-02-18 19:43:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2023-02-18 19:43:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-02-18 19:43:33,690 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:43:33,690 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:43:33,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-02-18 19:43:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-02-18 19:43:33,909 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:43:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:43:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1541819268, now seen corresponding path program 23 times [2023-02-18 19:43:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:43:33,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258155520] [2023-02-18 19:43:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:43:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:43:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:41,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:46,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:48,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:51,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:43:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:43:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 0 proven. 1633 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2023-02-18 19:43:52,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:43:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258155520] [2023-02-18 19:43:52,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258155520] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:43:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756842954] [2023-02-18 19:43:52,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:43:52,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:43:52,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:43:52,763 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:43:52,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-02-18 19:43:55,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-02-18 19:43:55,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:43:55,050 WARN L261 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 392 conjunts are in the unsatisfiable core [2023-02-18 19:43:55,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:43:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 0 proven. 1633 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2023-02-18 19:43:57,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:44:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 0 proven. 3266 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-02-18 19:44:03,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756842954] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:44:03,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:44:03,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 102, 147] total 155 [2023-02-18 19:44:03,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853965758] [2023-02-18 19:44:03,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:44:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2023-02-18 19:44:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:44:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2023-02-18 19:44:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=23320, Unknown=0, NotChecked=0, Total=23870 [2023-02-18 19:44:03,292 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand has 155 states, 154 states have (on average 1.6753246753246753) internal successors, (258), 104 states have internal predecessors, (258), 51 states have call successors, (51), 1 states have call predecessors, (51), 49 states have return successors, (97), 51 states have call predecessors, (97), 51 states have call successors, (97) [2023-02-18 19:44:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:44:11,155 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2023-02-18 19:44:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-02-18 19:44:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 154 states have (on average 1.6753246753246753) internal successors, (258), 104 states have internal predecessors, (258), 51 states have call successors, (51), 1 states have call predecessors, (51), 49 states have return successors, (97), 51 states have call predecessors, (97), 51 states have call successors, (97) Word has length 341 [2023-02-18 19:44:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:44:11,157 INFO L225 Difference]: With dead ends: 309 [2023-02-18 19:44:11,157 INFO L226 Difference]: Without dead ends: 305 [2023-02-18 19:44:11,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 525 SyntacticMatches, 199 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7813 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3315, Invalid=59937, Unknown=0, NotChecked=0, Total=63252 [2023-02-18 19:44:11,163 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 149 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 10059 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 4856 SdHoareTripleChecker+Invalid, 10120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 10059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:44:11,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 4856 Invalid, 10120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 10059 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-02-18 19:44:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-02-18 19:44:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 165. [2023-02-18 19:44:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 3 states have call successors, (3), 2 states have call predecessors, (3), 50 states have return successors, (51), 50 states have call predecessors, (51), 3 states have call successors, (51) [2023-02-18 19:44:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2023-02-18 19:44:11,167 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 341 [2023-02-18 19:44:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:44:11,167 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2023-02-18 19:44:11,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 154 states have (on average 1.6753246753246753) internal successors, (258), 104 states have internal predecessors, (258), 51 states have call successors, (51), 1 states have call predecessors, (51), 49 states have return successors, (97), 51 states have call predecessors, (97), 51 states have call successors, (97) [2023-02-18 19:44:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2023-02-18 19:44:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-02-18 19:44:11,168 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:44:11,168 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:44:11,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-02-18 19:44:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:44:11,379 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:44:11,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:44:11,379 INFO L85 PathProgramCache]: Analyzing trace with hash -65102594, now seen corresponding path program 24 times [2023-02-18 19:44:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:44:11,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203486981] [2023-02-18 19:44:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:44:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:44:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:17,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3984 backedges. 0 proven. 1704 refuted. 0 times theorem prover too weak. 2280 trivial. 0 not checked. [2023-02-18 19:44:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:44:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203486981] [2023-02-18 19:44:31,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203486981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:44:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378467866] [2023-02-18 19:44:31,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:44:31,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:44:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:44:31,413 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:44:31,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-02-18 19:44:33,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-02-18 19:44:33,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:44:33,834 WARN L261 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 400 conjunts are in the unsatisfiable core [2023-02-18 19:44:33,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:44:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3984 backedges. 0 proven. 1704 refuted. 0 times theorem prover too weak. 2280 trivial. 0 not checked. [2023-02-18 19:44:36,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:44:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3984 backedges. 0 proven. 3408 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-02-18 19:44:41,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378467866] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:44:41,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:44:41,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 150] total 159 [2023-02-18 19:44:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246564547] [2023-02-18 19:44:41,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:44:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2023-02-18 19:44:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:44:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2023-02-18 19:44:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=24556, Unknown=0, NotChecked=0, Total=25122 [2023-02-18 19:44:41,768 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand has 159 states, 157 states have (on average 1.6815286624203822) internal successors, (264), 107 states have internal predecessors, (264), 53 states have call successors, (53), 1 states have call predecessors, (53), 50 states have return successors, (99), 52 states have call predecessors, (99), 53 states have call successors, (99) [2023-02-18 19:44:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:44:49,236 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2023-02-18 19:44:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-18 19:44:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 157 states have (on average 1.6815286624203822) internal successors, (264), 107 states have internal predecessors, (264), 53 states have call successors, (53), 1 states have call predecessors, (53), 50 states have return successors, (99), 52 states have call predecessors, (99), 53 states have call successors, (99) Word has length 348 [2023-02-18 19:44:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:44:49,237 INFO L225 Difference]: With dead ends: 315 [2023-02-18 19:44:49,237 INFO L226 Difference]: Without dead ends: 311 [2023-02-18 19:44:49,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 530 SyntacticMatches, 208 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8885 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=3386, Invalid=62406, Unknown=0, NotChecked=0, Total=65792 [2023-02-18 19:44:49,245 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 505 mSDsluCounter, 4615 mSDsCounter, 0 mSdLazyCounter, 9133 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 9547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 9133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:44:49,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 4676 Invalid, 9547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 9133 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-18 19:44:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-02-18 19:44:49,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 168. [2023-02-18 19:44:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 3 states have call successors, (3), 2 states have call predecessors, (3), 51 states have return successors, (52), 51 states have call predecessors, (52), 3 states have call successors, (52) [2023-02-18 19:44:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2023-02-18 19:44:49,256 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 348 [2023-02-18 19:44:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:44:49,257 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2023-02-18 19:44:49,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 157 states have (on average 1.6815286624203822) internal successors, (264), 107 states have internal predecessors, (264), 53 states have call successors, (53), 1 states have call predecessors, (53), 50 states have return successors, (99), 52 states have call predecessors, (99), 53 states have call successors, (99) [2023-02-18 19:44:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2023-02-18 19:44:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-02-18 19:44:49,258 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:44:49,258 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:44:49,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-02-18 19:44:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:44:49,473 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:44:49,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:44:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2042856982, now seen corresponding path program 24 times [2023-02-18 19:44:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:44:49,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87586580] [2023-02-18 19:44:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:44:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:44:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:44:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:44:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:04,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:09,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:45:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:45:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4152 backedges. 0 proven. 1776 refuted. 0 times theorem prover too weak. 2376 trivial. 0 not checked. [2023-02-18 19:45:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:45:10,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87586580] [2023-02-18 19:45:10,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87586580] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:45:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769589602] [2023-02-18 19:45:10,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:45:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:45:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:45:10,416 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:45:10,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-02-18 19:45:12,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-02-18 19:45:12,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:45:12,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 308 conjunts are in the unsatisfiable core [2023-02-18 19:45:12,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:45:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4152 backedges. 0 proven. 1776 refuted. 0 times theorem prover too weak. 2376 trivial. 0 not checked. [2023-02-18 19:45:19,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:46:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4152 backedges. 0 proven. 3552 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-02-18 19:46:01,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769589602] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:46:01,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:46:01,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 106, 153] total 358 [2023-02-18 19:46:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89108751] [2023-02-18 19:46:01,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:46:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 358 states [2023-02-18 19:46:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:46:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 358 interpolants. [2023-02-18 19:46:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1504, Invalid=126302, Unknown=0, NotChecked=0, Total=127806 [2023-02-18 19:46:01,177 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand has 358 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 208 states have internal predecessors, (466), 53 states have call successors, (53), 1 states have call predecessors, (53), 150 states have return successors, (150), 150 states have call predecessors, (150), 53 states have call successors, (150) [2023-02-18 19:46:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:46:15,873 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2023-02-18 19:46:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-02-18 19:46:15,874 INFO L78 Accepts]: Start accepts. Automaton has has 358 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 208 states have internal predecessors, (466), 53 states have call successors, (53), 1 states have call predecessors, (53), 150 states have return successors, (150), 150 states have call predecessors, (150), 53 states have call successors, (150) Word has length 355 [2023-02-18 19:46:15,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:46:15,875 INFO L225 Difference]: With dead ends: 321 [2023-02-18 19:46:15,875 INFO L226 Difference]: Without dead ends: 317 [2023-02-18 19:46:15,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 453 SyntacticMatches, 104 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43108 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=4633, Invalid=205589, Unknown=0, NotChecked=0, Total=210222 [2023-02-18 19:46:15,890 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 34 mSDsluCounter, 9740 mSDsCounter, 0 mSdLazyCounter, 20346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 9802 SdHoareTripleChecker+Invalid, 20356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-18 19:46:15,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 9802 Invalid, 20356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20346 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-02-18 19:46:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-02-18 19:46:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 171. [2023-02-18 19:46:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 115 states have (on average 1.017391304347826) internal successors, (117), 116 states have internal predecessors, (117), 3 states have call successors, (3), 2 states have call predecessors, (3), 52 states have return successors, (53), 52 states have call predecessors, (53), 3 states have call successors, (53) [2023-02-18 19:46:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2023-02-18 19:46:15,894 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 355 [2023-02-18 19:46:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:46:15,894 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2023-02-18 19:46:15,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 358 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 208 states have internal predecessors, (466), 53 states have call successors, (53), 1 states have call predecessors, (53), 150 states have return successors, (150), 150 states have call predecessors, (150), 53 states have call successors, (150) [2023-02-18 19:46:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2023-02-18 19:46:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-02-18 19:46:15,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:46:15,896 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:46:15,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-02-18 19:46:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:46:16,099 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:46:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:46:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash -663370328, now seen corresponding path program 25 times [2023-02-18 19:46:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:46:16,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774869136] [2023-02-18 19:46:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:46:16,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:46:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:26,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:46:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 0 proven. 1850 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2023-02-18 19:46:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:46:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774869136] [2023-02-18 19:46:39,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774869136] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:46:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862658804] [2023-02-18 19:46:39,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:46:39,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:46:39,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:46:39,266 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:46:39,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-02-18 19:46:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:46:47,301 WARN L261 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 416 conjunts are in the unsatisfiable core [2023-02-18 19:46:47,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:46:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 0 proven. 1850 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2023-02-18 19:46:50,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:46:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 0 proven. 3700 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-02-18 19:46:56,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862658804] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:46:56,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:46:56,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 156] total 165 [2023-02-18 19:46:56,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913716821] [2023-02-18 19:46:56,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:46:56,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2023-02-18 19:46:56,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:46:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2023-02-18 19:46:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=26472, Unknown=0, NotChecked=0, Total=27060 [2023-02-18 19:46:56,474 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand has 165 states, 163 states have (on average 1.6809815950920246) internal successors, (274), 111 states have internal predecessors, (274), 55 states have call successors, (55), 1 states have call predecessors, (55), 52 states have return successors, (103), 54 states have call predecessors, (103), 55 states have call successors, (103) [2023-02-18 19:47:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:47:03,045 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2023-02-18 19:47:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-02-18 19:47:03,046 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 163 states have (on average 1.6809815950920246) internal successors, (274), 111 states have internal predecessors, (274), 55 states have call successors, (55), 1 states have call predecessors, (55), 52 states have return successors, (103), 54 states have call predecessors, (103), 55 states have call successors, (103) Word has length 362 [2023-02-18 19:47:03,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:47:03,047 INFO L225 Difference]: With dead ends: 327 [2023-02-18 19:47:03,047 INFO L226 Difference]: Without dead ends: 323 [2023-02-18 19:47:03,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 553 SyntacticMatches, 215 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9484 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=3625, Invalid=67397, Unknown=0, NotChecked=0, Total=71022 [2023-02-18 19:47:03,051 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 487 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 11116 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 5607 SdHoareTripleChecker+Invalid, 11518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 11116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-18 19:47:03,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 5607 Invalid, 11518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 11116 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-18 19:47:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-02-18 19:47:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 174. [2023-02-18 19:47:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 53 states have call predecessors, (54), 3 states have call successors, (54) [2023-02-18 19:47:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2023-02-18 19:47:03,055 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 362 [2023-02-18 19:47:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:47:03,055 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions. [2023-02-18 19:47:03,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 163 states have (on average 1.6809815950920246) internal successors, (274), 111 states have internal predecessors, (274), 55 states have call successors, (55), 1 states have call predecessors, (55), 52 states have return successors, (103), 54 states have call predecessors, (103), 55 states have call successors, (103) [2023-02-18 19:47:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions. [2023-02-18 19:47:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-02-18 19:47:03,056 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:47:03,057 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:47:03,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-02-18 19:47:03,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-02-18 19:47:03,284 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:47:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:47:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1246591536, now seen corresponding path program 25 times [2023-02-18 19:47:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:47:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490291257] [2023-02-18 19:47:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:47:03,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:47:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:21,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:23,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:26,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4500 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 2575 trivial. 0 not checked. [2023-02-18 19:47:27,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:47:27,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490291257] [2023-02-18 19:47:27,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490291257] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:47:27,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166100172] [2023-02-18 19:47:27,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:47:27,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:47:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:47:27,050 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:47:27,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-02-18 19:47:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:34,931 WARN L261 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 424 conjunts are in the unsatisfiable core [2023-02-18 19:47:34,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:47:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4500 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 2575 trivial. 0 not checked. [2023-02-18 19:47:37,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:47:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4500 backedges. 0 proven. 3850 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-02-18 19:47:44,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166100172] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:47:44,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:47:44,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 110, 159] total 167 [2023-02-18 19:47:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791071903] [2023-02-18 19:47:44,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:47:44,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-02-18 19:47:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:47:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-02-18 19:47:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=27128, Unknown=0, NotChecked=0, Total=27722 [2023-02-18 19:47:44,600 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand has 167 states, 166 states have (on average 1.6746987951807228) internal successors, (278), 112 states have internal predecessors, (278), 55 states have call successors, (55), 1 states have call predecessors, (55), 53 states have return successors, (105), 55 states have call predecessors, (105), 55 states have call successors, (105) [2023-02-18 19:47:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:47:51,889 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2023-02-18 19:47:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-02-18 19:47:51,890 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 166 states have (on average 1.6746987951807228) internal successors, (278), 112 states have internal predecessors, (278), 55 states have call successors, (55), 1 states have call predecessors, (55), 53 states have return successors, (105), 55 states have call predecessors, (105), 55 states have call successors, (105) Word has length 369 [2023-02-18 19:47:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:47:51,891 INFO L225 Difference]: With dead ends: 333 [2023-02-18 19:47:51,891 INFO L226 Difference]: Without dead ends: 329 [2023-02-18 19:47:51,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 567 SyntacticMatches, 217 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9126 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=3797, Invalid=69915, Unknown=0, NotChecked=0, Total=73712 [2023-02-18 19:47:51,900 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 129 mSDsluCounter, 5764 mSDsCounter, 0 mSdLazyCounter, 11636 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 5828 SdHoareTripleChecker+Invalid, 11685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:47:51,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 5828 Invalid, 11685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11636 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-18 19:47:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-02-18 19:47:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 177. [2023-02-18 19:47:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 3 states have call successors, (3), 2 states have call predecessors, (3), 54 states have return successors, (55), 54 states have call predecessors, (55), 3 states have call successors, (55) [2023-02-18 19:47:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2023-02-18 19:47:51,904 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 369 [2023-02-18 19:47:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:47:51,904 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2023-02-18 19:47:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 166 states have (on average 1.6746987951807228) internal successors, (278), 112 states have internal predecessors, (278), 55 states have call successors, (55), 1 states have call predecessors, (55), 53 states have return successors, (105), 55 states have call predecessors, (105), 55 states have call successors, (105) [2023-02-18 19:47:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2023-02-18 19:47:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-02-18 19:47:51,906 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:47:51,906 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:47:51,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-02-18 19:47:52,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-02-18 19:47:52,125 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:47:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:47:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -89175854, now seen corresponding path program 26 times [2023-02-18 19:47:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:47:52,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007442534] [2023-02-18 19:47:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:47:52,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:47:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:47:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:47:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:48:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 19:48:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat