./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.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 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:56:56,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:56:56,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:56:56,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:56:56,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:56:56,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:56:56,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:56:56,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:56:56,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:56:56,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:56:56,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:56:56,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:56:56,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:56:56,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:56:56,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:56:56,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:56:56,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:56:56,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:56:56,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:56:56,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:56:56,945 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:56:56,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:56:56,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:56:56,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:56:56,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:56:56,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:56:56,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:56:56,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:56:56,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:56:56,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:56:56,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:56:56,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:56:56,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:56:56,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:56:56,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:56:56,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:56:56,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:56:56,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:56:56,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:56:56,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:56:56,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:56:56,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:56:56,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:56:56,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:56:56,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:56:56,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:56:56,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:56:56,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:56:56,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:56:56,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:56:56,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:56:56,988 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:56:56,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:56:56,989 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:56:56,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:56:56,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:56:56,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:56:56,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:56:56,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:56:56,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:56:56,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:56:56,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:56:56,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:56:56,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:56:56,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:56:56,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:56:56,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:56:56,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:56:56,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:56:56,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:56:56,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:56:56,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:56:56,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:56:56,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:56:56,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:56:56,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:56:56,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 [2022-07-22 17:56:57,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:56:57,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:56:57,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:56:57,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:56:57,182 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:56:57,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-07-22 17:56:57,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91292161b/c13c8bb7c2844c9ca96a92aeb33e86c5/FLAGaa4081618 [2022-07-22 17:56:57,606 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:56:57,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-07-22 17:56:57,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91292161b/c13c8bb7c2844c9ca96a92aeb33e86c5/FLAGaa4081618 [2022-07-22 17:56:58,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91292161b/c13c8bb7c2844c9ca96a92aeb33e86c5 [2022-07-22 17:56:58,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:56:58,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:56:58,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:56:58,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:56:58,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:56:58,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2a7d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58, skipping insertion in model container [2022-07-22 17:56:58,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:56:58,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:56:58,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-07-22 17:56:58,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:56:58,259 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:56:58,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-07-22 17:56:58,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:56:58,332 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:56:58,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58 WrapperNode [2022-07-22 17:56:58,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:56:58,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:56:58,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:56:58,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:56:58,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,370 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 402 [2022-07-22 17:56:58,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:56:58,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:56:58,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:56:58,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:56:58,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:56:58,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:56:58,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:56:58,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:56:58,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (1/1) ... [2022-07-22 17:56:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:56:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:56:58,437 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) [2022-07-22 17:56:58,441 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 [2022-07-22 17:56:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:56:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-07-22 17:56:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-07-22 17:56:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-22 17:56:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-22 17:56:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-07-22 17:56:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-07-22 17:56:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-07-22 17:56:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-07-22 17:56:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-07-22 17:56:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-07-22 17:56:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 17:56:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 17:56:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:56:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:56:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:56:58,545 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:56:58,547 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:56:58,907 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:56:58,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:56:58,914 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 17:56:58,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:56:58 BoogieIcfgContainer [2022-07-22 17:56:58,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:56:58,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:56:58,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:56:58,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:56:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:56:58" (1/3) ... [2022-07-22 17:56:58,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a2e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:56:58, skipping insertion in model container [2022-07-22 17:56:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:58" (2/3) ... [2022-07-22 17:56:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a2e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:56:58, skipping insertion in model container [2022-07-22 17:56:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:56:58" (3/3) ... [2022-07-22 17:56:58,928 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-07-22 17:56:58,938 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:56:58,938 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:56:59,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:56:59,013 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40b68001, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1596790a [2022-07-22 17:56:59,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:56:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 141 states have (on average 1.5886524822695036) internal successors, (224), 146 states have internal predecessors, (224), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-22 17:56:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 17:56:59,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:59,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:59,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:59,029 INFO L85 PathProgramCache]: Analyzing trace with hash 535506886, now seen corresponding path program 1 times [2022-07-22 17:56:59,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:59,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695056405] [2022-07-22 17:56:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:59,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695056405] [2022-07-22 17:56:59,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695056405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:59,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:59,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596930161] [2022-07-22 17:56:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:59,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:59,234 INFO L87 Difference]: Start difference. First operand has 186 states, 141 states have (on average 1.5886524822695036) internal successors, (224), 146 states have internal predecessors, (224), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:56:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:59,354 INFO L93 Difference]: Finished difference Result 373 states and 641 transitions. [2022-07-22 17:56:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:59,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-22 17:56:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:59,367 INFO L225 Difference]: With dead ends: 373 [2022-07-22 17:56:59,367 INFO L226 Difference]: Without dead ends: 190 [2022-07-22 17:56:59,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:59,377 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 18 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 829 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-22 17:56:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-22 17:56:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 143 states have (on average 1.5384615384615385) internal successors, (220), 147 states have internal predecessors, (220), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-22 17:56:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 294 transitions. [2022-07-22 17:56:59,440 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 294 transitions. Word has length 15 [2022-07-22 17:56:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:59,441 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 294 transitions. [2022-07-22 17:56:59,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:56:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 294 transitions. [2022-07-22 17:56:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-22 17:56:59,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:59,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:56:59,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash -355990154, now seen corresponding path program 1 times [2022-07-22 17:56:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:59,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378710339] [2022-07-22 17:56:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378710339] [2022-07-22 17:56:59,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378710339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:59,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:59,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996516422] [2022-07-22 17:56:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:59,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:59,489 INFO L87 Difference]: Start difference. First operand 188 states and 294 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:56:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:59,548 INFO L93 Difference]: Finished difference Result 389 states and 611 transitions. [2022-07-22 17:56:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:59,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-22 17:56:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:59,551 INFO L225 Difference]: With dead ends: 389 [2022-07-22 17:56:59,551 INFO L226 Difference]: Without dead ends: 204 [2022-07-22 17:56:59,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:59,557 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 25 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:59,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 850 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-22 17:56:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2022-07-22 17:56:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 158 states have internal predecessors, (234), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 17:56:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 310 transitions. [2022-07-22 17:56:59,572 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 310 transitions. Word has length 16 [2022-07-22 17:56:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:59,573 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 310 transitions. [2022-07-22 17:56:59,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:56:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 310 transitions. [2022-07-22 17:56:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 17:56:59,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:59,574 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:59,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:56:59,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1515048690, now seen corresponding path program 1 times [2022-07-22 17:56:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:59,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30399893] [2022-07-22 17:56:59,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:56:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:59,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30399893] [2022-07-22 17:56:59,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30399893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:59,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:59,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:56:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187692489] [2022-07-22 17:56:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:59,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:56:59,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:56:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:56:59,637 INFO L87 Difference]: Start difference. First operand 201 states and 310 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:56:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:59,661 INFO L93 Difference]: Finished difference Result 421 states and 657 transitions. [2022-07-22 17:56:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:56:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-07-22 17:56:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:59,665 INFO L225 Difference]: With dead ends: 421 [2022-07-22 17:56:59,665 INFO L226 Difference]: Without dead ends: 230 [2022-07-22 17:56:59,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:56:59,667 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 22 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:59,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 574 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-22 17:56:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 203. [2022-07-22 17:56:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.5128205128205128) internal successors, (236), 160 states have internal predecessors, (236), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 17:56:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 312 transitions. [2022-07-22 17:56:59,680 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 312 transitions. Word has length 24 [2022-07-22 17:56:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:59,680 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 312 transitions. [2022-07-22 17:56:59,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:56:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 312 transitions. [2022-07-22 17:56:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 17:56:59,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:59,682 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:56:59,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 257838497, now seen corresponding path program 1 times [2022-07-22 17:56:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:59,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802350083] [2022-07-22 17:56:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:56:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:59,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802350083] [2022-07-22 17:56:59,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802350083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:59,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:59,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:56:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476521480] [2022-07-22 17:56:59,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:59,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:56:59,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:56:59,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:59,762 INFO L87 Difference]: Start difference. First operand 203 states and 312 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:56:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:59,813 INFO L93 Difference]: Finished difference Result 503 states and 792 transitions. [2022-07-22 17:56:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-22 17:56:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:59,819 INFO L225 Difference]: With dead ends: 503 [2022-07-22 17:56:59,819 INFO L226 Difference]: Without dead ends: 316 [2022-07-22 17:56:59,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:59,824 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 128 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:59,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1210 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-22 17:56:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 207. [2022-07-22 17:56:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.5031446540880504) internal successors, (239), 163 states have internal predecessors, (239), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-07-22 17:56:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 316 transitions. [2022-07-22 17:56:59,847 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 316 transitions. Word has length 32 [2022-07-22 17:56:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:59,847 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 316 transitions. [2022-07-22 17:56:59,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:56:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 316 transitions. [2022-07-22 17:56:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 17:56:59,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:59,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:56:59,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash -559699066, now seen corresponding path program 1 times [2022-07-22 17:56:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:59,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876885408] [2022-07-22 17:56:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:56:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:56:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:59,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:59,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876885408] [2022-07-22 17:56:59,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876885408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:59,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:59,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:56:59,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010229124] [2022-07-22 17:56:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:59,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:56:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:59,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:56:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:56:59,926 INFO L87 Difference]: Start difference. First operand 207 states and 316 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:56:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:59,996 INFO L93 Difference]: Finished difference Result 359 states and 554 transitions. [2022-07-22 17:56:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:56:59,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-07-22 17:56:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:59,999 INFO L225 Difference]: With dead ends: 359 [2022-07-22 17:56:59,999 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 17:57:00,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:57:00,013 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 128 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1230 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 17:57:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-22 17:57:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.4807692307692308) internal successors, (231), 160 states have internal predecessors, (231), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 17:57:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 307 transitions. [2022-07-22 17:57:00,033 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 307 transitions. Word has length 35 [2022-07-22 17:57:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,033 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 307 transitions. [2022-07-22 17:57:00,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:57:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 307 transitions. [2022-07-22 17:57:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 17:57:00,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:00,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:57:00,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1454829501, now seen corresponding path program 1 times [2022-07-22 17:57:00,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719882167] [2022-07-22 17:57:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:57:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719882167] [2022-07-22 17:57:00,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719882167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:00,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664440508] [2022-07-22 17:57:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:00,078 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) [2022-07-22 17:57:00,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:57:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:57:00,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:57:00,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:57:00,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664440508] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:00,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:00,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-22 17:57:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609327034] [2022-07-22 17:57:00,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:00,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:00,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,225 INFO L87 Difference]: Start difference. First operand 203 states and 307 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 17:57:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:00,269 INFO L93 Difference]: Finished difference Result 454 states and 701 transitions. [2022-07-22 17:57:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-22 17:57:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:00,271 INFO L225 Difference]: With dead ends: 454 [2022-07-22 17:57:00,272 INFO L226 Difference]: Without dead ends: 262 [2022-07-22 17:57:00,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,273 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 96 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 593 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-22 17:57:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2022-07-22 17:57:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 199 states have (on average 1.4572864321608041) internal successors, (290), 203 states have internal predecessors, (290), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-22 17:57:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 386 transitions. [2022-07-22 17:57:00,285 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 386 transitions. Word has length 35 [2022-07-22 17:57:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 386 transitions. [2022-07-22 17:57:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 17:57:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 386 transitions. [2022-07-22 17:57:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 17:57:00,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,287 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:00,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:00,504 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 [2022-07-22 17:57:00,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash -581068643, now seen corresponding path program 2 times [2022-07-22 17:57:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504962408] [2022-07-22 17:57:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 17:57:00,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:00,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504962408] [2022-07-22 17:57:00,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504962408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:00,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:00,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:00,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842006750] [2022-07-22 17:57:00,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:00,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:00,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:00,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:00,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:00,550 INFO L87 Difference]: Start difference. First operand 256 states and 386 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:57:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:00,580 INFO L93 Difference]: Finished difference Result 522 states and 798 transitions. [2022-07-22 17:57:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-22 17:57:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:00,582 INFO L225 Difference]: With dead ends: 522 [2022-07-22 17:57:00,595 INFO L226 Difference]: Without dead ends: 295 [2022-07-22 17:57:00,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,597 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 24 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 842 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-22 17:57:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2022-07-22 17:57:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 235 states have internal predecessors, (327), 51 states have call successors, (51), 9 states have call predecessors, (51), 9 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-22 17:57:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 429 transitions. [2022-07-22 17:57:00,609 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 429 transitions. Word has length 57 [2022-07-22 17:57:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 429 transitions. [2022-07-22 17:57:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:57:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 429 transitions. [2022-07-22 17:57:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 17:57:00,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:57:00,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1268107058, now seen corresponding path program 1 times [2022-07-22 17:57:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606434095] [2022-07-22 17:57:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 17:57:00,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:00,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606434095] [2022-07-22 17:57:00,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606434095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:00,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:00,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975738976] [2022-07-22 17:57:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:00,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:00,699 INFO L87 Difference]: Start difference. First operand 292 states and 429 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:57:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:00,734 INFO L93 Difference]: Finished difference Result 559 states and 845 transitions. [2022-07-22 17:57:00,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:00,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-22 17:57:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:00,739 INFO L225 Difference]: With dead ends: 559 [2022-07-22 17:57:00,739 INFO L226 Difference]: Without dead ends: 301 [2022-07-22 17:57:00,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,742 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 19 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 828 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-22 17:57:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2022-07-22 17:57:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 237 states have (on average 1.4135021097046414) internal successors, (335), 241 states have internal predecessors, (335), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-22 17:57:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 437 transitions. [2022-07-22 17:57:00,773 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 437 transitions. Word has length 57 [2022-07-22 17:57:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,774 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 437 transitions. [2022-07-22 17:57:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:57:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 437 transitions. [2022-07-22 17:57:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:57:00,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,777 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:57:00,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash -996792945, now seen corresponding path program 1 times [2022-07-22 17:57:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430500629] [2022-07-22 17:57:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-22 17:57:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:00,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430500629] [2022-07-22 17:57:00,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430500629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:00,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:00,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:57:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701329736] [2022-07-22 17:57:00,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:00,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,841 INFO L87 Difference]: Start difference. First operand 299 states and 437 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:57:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:00,865 INFO L93 Difference]: Finished difference Result 547 states and 813 transitions. [2022-07-22 17:57:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:00,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-07-22 17:57:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:00,868 INFO L225 Difference]: With dead ends: 547 [2022-07-22 17:57:00,868 INFO L226 Difference]: Without dead ends: 301 [2022-07-22 17:57:00,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,869 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 0 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1120 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-22 17:57:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2022-07-22 17:57:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 237 states have (on average 1.40084388185654) internal successors, (332), 241 states have internal predecessors, (332), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-22 17:57:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 434 transitions. [2022-07-22 17:57:00,889 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 434 transitions. Word has length 75 [2022-07-22 17:57:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,889 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 434 transitions. [2022-07-22 17:57:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:57:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 434 transitions. [2022-07-22 17:57:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 17:57:00,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,890 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:57:00,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2026074511, now seen corresponding path program 1 times [2022-07-22 17:57:00,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268856093] [2022-07-22 17:57:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-22 17:57:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:00,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268856093] [2022-07-22 17:57:00,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268856093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:00,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:00,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050529862] [2022-07-22 17:57:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:00,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:00,948 INFO L87 Difference]: Start difference. First operand 299 states and 434 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:57:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:00,980 INFO L93 Difference]: Finished difference Result 584 states and 869 transitions. [2022-07-22 17:57:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-07-22 17:57:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:00,982 INFO L225 Difference]: With dead ends: 584 [2022-07-22 17:57:00,982 INFO L226 Difference]: Without dead ends: 343 [2022-07-22 17:57:00,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:00,983 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 25 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 842 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-22 17:57:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 340. [2022-07-22 17:57:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 274 states have (on average 1.364963503649635) internal successors, (374), 278 states have internal predecessors, (374), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-22 17:57:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 482 transitions. [2022-07-22 17:57:00,993 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 482 transitions. Word has length 104 [2022-07-22 17:57:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,993 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 482 transitions. [2022-07-22 17:57:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:57:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 482 transitions. [2022-07-22 17:57:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 17:57:00,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,994 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:00,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:57:00,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1302977286, now seen corresponding path program 1 times [2022-07-22 17:57:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399737342] [2022-07-22 17:57:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-22 17:57:01,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399737342] [2022-07-22 17:57:01,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399737342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113502560] [2022-07-22 17:57:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:01,045 INFO L87 Difference]: Start difference. First operand 340 states and 482 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:57:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,080 INFO L93 Difference]: Finished difference Result 610 states and 889 transitions. [2022-07-22 17:57:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:57:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-07-22 17:57:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,082 INFO L225 Difference]: With dead ends: 610 [2022-07-22 17:57:01,082 INFO L226 Difference]: Without dead ends: 334 [2022-07-22 17:57:01,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,084 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 15 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:01,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 801 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-22 17:57:01,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-07-22 17:57:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 269 states have (on average 1.345724907063197) internal successors, (362), 273 states have internal predecessors, (362), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-22 17:57:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 468 transitions. [2022-07-22 17:57:01,094 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 468 transitions. Word has length 105 [2022-07-22 17:57:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,095 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 468 transitions. [2022-07-22 17:57:01,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:57:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 468 transitions. [2022-07-22 17:57:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 17:57:01,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,096 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:57:01,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash 286281457, now seen corresponding path program 1 times [2022-07-22 17:57:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29852956] [2022-07-22 17:57:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-22 17:57:01,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29852956] [2022-07-22 17:57:01,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29852956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:57:01,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363196521] [2022-07-22 17:57:01,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,165 INFO L87 Difference]: Start difference. First operand 334 states and 468 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 17:57:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,208 INFO L93 Difference]: Finished difference Result 585 states and 838 transitions. [2022-07-22 17:57:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:01,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-07-22 17:57:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,210 INFO L225 Difference]: With dead ends: 585 [2022-07-22 17:57:01,210 INFO L226 Difference]: Without dead ends: 336 [2022-07-22 17:57:01,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,211 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:01,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1105 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-07-22 17:57:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2022-07-22 17:57:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 269 states have (on average 1.3345724907063197) internal successors, (359), 273 states have internal predecessors, (359), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-22 17:57:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 465 transitions. [2022-07-22 17:57:01,220 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 465 transitions. Word has length 124 [2022-07-22 17:57:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,221 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 465 transitions. [2022-07-22 17:57:01,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 17:57:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 465 transitions. [2022-07-22 17:57:01,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 17:57:01,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,222 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:01,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:57:01,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1881609517, now seen corresponding path program 1 times [2022-07-22 17:57:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496062894] [2022-07-22 17:57:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-22 17:57:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496062894] [2022-07-22 17:57:01,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496062894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472713369] [2022-07-22 17:57:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:01,284 INFO L87 Difference]: Start difference. First operand 334 states and 465 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 17:57:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,320 INFO L93 Difference]: Finished difference Result 548 states and 798 transitions. [2022-07-22 17:57:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:57:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-07-22 17:57:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,322 INFO L225 Difference]: With dead ends: 548 [2022-07-22 17:57:01,322 INFO L226 Difference]: Without dead ends: 332 [2022-07-22 17:57:01,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,323 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 13 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:01,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 769 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-22 17:57:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-07-22 17:57:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 268 states have (on average 1.3320895522388059) internal successors, (357), 272 states have internal predecessors, (357), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-22 17:57:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 461 transitions. [2022-07-22 17:57:01,331 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 461 transitions. Word has length 157 [2022-07-22 17:57:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,332 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 461 transitions. [2022-07-22 17:57:01,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 17:57:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 461 transitions. [2022-07-22 17:57:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 17:57:01,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,333 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:01,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:57:01,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash -855321017, now seen corresponding path program 1 times [2022-07-22 17:57:01,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295811099] [2022-07-22 17:57:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:57:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-07-22 17:57:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295811099] [2022-07-22 17:57:01,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295811099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102404130] [2022-07-22 17:57:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:01,403 INFO L87 Difference]: Start difference. First operand 332 states and 461 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:57:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,438 INFO L93 Difference]: Finished difference Result 488 states and 694 transitions. [2022-07-22 17:57:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:01,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2022-07-22 17:57:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,440 INFO L225 Difference]: With dead ends: 488 [2022-07-22 17:57:01,440 INFO L226 Difference]: Without dead ends: 315 [2022-07-22 17:57:01,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,441 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 35 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:01,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 750 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:01,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-22 17:57:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-07-22 17:57:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 254 states have (on average 1.3228346456692914) internal successors, (336), 258 states have internal predecessors, (336), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-22 17:57:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 434 transitions. [2022-07-22 17:57:01,449 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 434 transitions. Word has length 176 [2022-07-22 17:57:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,449 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 434 transitions. [2022-07-22 17:57:01,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:57:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 434 transitions. [2022-07-22 17:57:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-22 17:57:01,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,451 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:57:01,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1739802048, now seen corresponding path program 1 times [2022-07-22 17:57:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753307160] [2022-07-22 17:57:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 17:57:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-22 17:57:01,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753307160] [2022-07-22 17:57:01,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753307160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:01,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063222686] [2022-07-22 17:57:01,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:01,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:01,526 INFO L87 Difference]: Start difference. First operand 315 states and 434 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:57:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,562 INFO L93 Difference]: Finished difference Result 471 states and 667 transitions. [2022-07-22 17:57:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2022-07-22 17:57:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,564 INFO L225 Difference]: With dead ends: 471 [2022-07-22 17:57:01,564 INFO L226 Difference]: Without dead ends: 296 [2022-07-22 17:57:01,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,566 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 30 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:01,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 754 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-22 17:57:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-07-22 17:57:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 238 states have (on average 1.315126050420168) internal successors, (313), 242 states have internal predecessors, (313), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-22 17:57:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 405 transitions. [2022-07-22 17:57:01,574 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 405 transitions. Word has length 178 [2022-07-22 17:57:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,575 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 405 transitions. [2022-07-22 17:57:01,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:57:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 405 transitions. [2022-07-22 17:57:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 17:57:01,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,576 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:57:01,577 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1086957777, now seen corresponding path program 1 times [2022-07-22 17:57:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911477855] [2022-07-22 17:57:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 17:57:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-22 17:57:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911477855] [2022-07-22 17:57:01,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911477855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:57:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836433108] [2022-07-22 17:57:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,648 INFO L87 Difference]: Start difference. First operand 296 states and 405 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 17:57:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,662 INFO L93 Difference]: Finished difference Result 451 states and 637 transitions. [2022-07-22 17:57:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:01,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2022-07-22 17:57:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,664 INFO L225 Difference]: With dead ends: 451 [2022-07-22 17:57:01,664 INFO L226 Difference]: Without dead ends: 296 [2022-07-22 17:57:01,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,665 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:01,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1084 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-22 17:57:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-07-22 17:57:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 242 states have internal predecessors, (307), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-22 17:57:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 399 transitions. [2022-07-22 17:57:01,672 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 399 transitions. Word has length 179 [2022-07-22 17:57:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,673 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 399 transitions. [2022-07-22 17:57:01,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 17:57:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 399 transitions. [2022-07-22 17:57:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-22 17:57:01,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,674 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:01,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:57:01,675 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2059675566, now seen corresponding path program 1 times [2022-07-22 17:57:01,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496658317] [2022-07-22 17:57:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 17:57:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-22 17:57:01,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496658317] [2022-07-22 17:57:01,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496658317] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:01,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472093659] [2022-07-22 17:57:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:01,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:01,740 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) [2022-07-22 17:57:01,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:57:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:57:01,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-22 17:57:01,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-22 17:57:01,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472093659] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:01,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 17:57:01,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-07-22 17:57:01,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672047448] [2022-07-22 17:57:01,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:01,994 INFO L87 Difference]: Start difference. First operand 296 states and 399 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:57:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:02,018 INFO L93 Difference]: Finished difference Result 472 states and 659 transitions. [2022-07-22 17:57:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:57:02,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2022-07-22 17:57:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:02,020 INFO L225 Difference]: With dead ends: 472 [2022-07-22 17:57:02,021 INFO L226 Difference]: Without dead ends: 275 [2022-07-22 17:57:02,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:02,022 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 25 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:02,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 753 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-22 17:57:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2022-07-22 17:57:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 224 states have internal predecessors, (282), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 17:57:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 368 transitions. [2022-07-22 17:57:02,029 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 368 transitions. Word has length 186 [2022-07-22 17:57:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:02,030 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 368 transitions. [2022-07-22 17:57:02,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:57:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 368 transitions. [2022-07-22 17:57:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-22 17:57:02,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:02,031 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:02,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:02,249 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,SelfDestructingSolverStorable16 [2022-07-22 17:57:02,249 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -347660191, now seen corresponding path program 1 times [2022-07-22 17:57:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:02,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104779628] [2022-07-22 17:57:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-22 17:57:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:02,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104779628] [2022-07-22 17:57:02,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104779628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:02,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:02,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146963600] [2022-07-22 17:57:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:02,333 INFO L87 Difference]: Start difference. First operand 275 states and 368 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 17:57:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:02,350 INFO L93 Difference]: Finished difference Result 429 states and 600 transitions. [2022-07-22 17:57:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:02,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2022-07-22 17:57:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:02,352 INFO L225 Difference]: With dead ends: 429 [2022-07-22 17:57:02,352 INFO L226 Difference]: Without dead ends: 281 [2022-07-22 17:57:02,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:02,353 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 6 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:02,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 794 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-22 17:57:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2022-07-22 17:57:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 223 states have (on average 1.2780269058295963) internal successors, (285), 227 states have internal predecessors, (285), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 17:57:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 371 transitions. [2022-07-22 17:57:02,360 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 371 transitions. Word has length 210 [2022-07-22 17:57:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:02,361 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 371 transitions. [2022-07-22 17:57:02,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 17:57:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 371 transitions. [2022-07-22 17:57:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-22 17:57:02,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:02,363 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:02,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:57:02,363 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash -855668969, now seen corresponding path program 1 times [2022-07-22 17:57:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:02,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788540069] [2022-07-22 17:57:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-22 17:57:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:02,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788540069] [2022-07-22 17:57:02,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788540069] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:02,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591810077] [2022-07-22 17:57:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:02,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:02,449 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) [2022-07-22 17:57:02,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:57:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:57:02,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-22 17:57:02,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:02,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591810077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:02,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:02,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 17:57:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116749474] [2022-07-22 17:57:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:02,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:02,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:02,618 INFO L87 Difference]: Start difference. First operand 279 states and 371 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 17:57:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:02,639 INFO L93 Difference]: Finished difference Result 438 states and 607 transitions. [2022-07-22 17:57:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 219 [2022-07-22 17:57:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:02,641 INFO L225 Difference]: With dead ends: 438 [2022-07-22 17:57:02,641 INFO L226 Difference]: Without dead ends: 286 [2022-07-22 17:57:02,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:57:02,642 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 7 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:02,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 799 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-22 17:57:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2022-07-22 17:57:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.2731277533039647) internal successors, (289), 231 states have internal predecessors, (289), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 17:57:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 375 transitions. [2022-07-22 17:57:02,649 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 375 transitions. Word has length 219 [2022-07-22 17:57:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:02,651 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 375 transitions. [2022-07-22 17:57:02,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 17:57:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 375 transitions. [2022-07-22 17:57:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-22 17:57:02,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:02,653 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:02,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:02,870 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1462568680, now seen corresponding path program 1 times [2022-07-22 17:57:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:02,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235223073] [2022-07-22 17:57:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-22 17:57:02,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:02,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235223073] [2022-07-22 17:57:02,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235223073] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:02,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835551098] [2022-07-22 17:57:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:02,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:02,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:02,961 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) [2022-07-22 17:57:02,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:57:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:57:03,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-22 17:57:03,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:03,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835551098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:03,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:03,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 17:57:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568498824] [2022-07-22 17:57:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:03,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:03,108 INFO L87 Difference]: Start difference. First operand 284 states and 375 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 17:57:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:03,132 INFO L93 Difference]: Finished difference Result 440 states and 605 transitions. [2022-07-22 17:57:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:57:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 229 [2022-07-22 17:57:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:03,134 INFO L225 Difference]: With dead ends: 440 [2022-07-22 17:57:03,134 INFO L226 Difference]: Without dead ends: 283 [2022-07-22 17:57:03,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:57:03,135 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 7 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:03,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 785 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-22 17:57:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-07-22 17:57:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 227 states have (on average 1.2599118942731278) internal successors, (286), 230 states have internal predecessors, (286), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-22 17:57:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 370 transitions. [2022-07-22 17:57:03,146 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 370 transitions. Word has length 229 [2022-07-22 17:57:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:03,146 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 370 transitions. [2022-07-22 17:57:03,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 17:57:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 370 transitions. [2022-07-22 17:57:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 17:57:03,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:03,148 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:03,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:03,363 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash 888305907, now seen corresponding path program 1 times [2022-07-22 17:57:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:03,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000956477] [2022-07-22 17:57:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-22 17:57:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:03,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000956477] [2022-07-22 17:57:03,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000956477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:03,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:03,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173806915] [2022-07-22 17:57:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:03,455 INFO L87 Difference]: Start difference. First operand 283 states and 370 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-22 17:57:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:03,628 INFO L93 Difference]: Finished difference Result 481 states and 666 transitions. [2022-07-22 17:57:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:57:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 239 [2022-07-22 17:57:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:03,630 INFO L225 Difference]: With dead ends: 481 [2022-07-22 17:57:03,630 INFO L226 Difference]: Without dead ends: 325 [2022-07-22 17:57:03,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:03,631 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 181 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:03,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 629 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-22 17:57:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 282. [2022-07-22 17:57:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 229 states have internal predecessors, (285), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-22 17:57:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2022-07-22 17:57:03,640 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 239 [2022-07-22 17:57:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:03,641 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2022-07-22 17:57:03,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-22 17:57:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2022-07-22 17:57:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-22 17:57:03,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:03,643 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:57:03,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1279032433, now seen corresponding path program 1 times [2022-07-22 17:57:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:03,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365070672] [2022-07-22 17:57:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:03,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-22 17:57:03,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:03,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365070672] [2022-07-22 17:57:03,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365070672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:03,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:03,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:57:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515231400] [2022-07-22 17:57:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:03,751 INFO L87 Difference]: Start difference. First operand 282 states and 367 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:57:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:04,159 INFO L93 Difference]: Finished difference Result 668 states and 899 transitions. [2022-07-22 17:57:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:57:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 240 [2022-07-22 17:57:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:04,163 INFO L225 Difference]: With dead ends: 668 [2022-07-22 17:57:04,163 INFO L226 Difference]: Without dead ends: 513 [2022-07-22 17:57:04,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:57:04,164 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 433 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:04,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 792 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:57:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-07-22 17:57:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 504. [2022-07-22 17:57:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 402 states have (on average 1.308457711442786) internal successors, (526), 404 states have internal predecessors, (526), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-22 17:57:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 666 transitions. [2022-07-22 17:57:04,180 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 666 transitions. Word has length 240 [2022-07-22 17:57:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:04,180 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 666 transitions. [2022-07-22 17:57:04,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:57:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 666 transitions. [2022-07-22 17:57:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-22 17:57:04,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:04,183 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 17:57:04,183 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1440781215, now seen corresponding path program 1 times [2022-07-22 17:57:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:04,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46155133] [2022-07-22 17:57:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:04,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-22 17:57:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-22 17:57:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 17:57:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:57:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-22 17:57:04,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:04,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46155133] [2022-07-22 17:57:04,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46155133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:04,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:04,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791045579] [2022-07-22 17:57:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:04,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:04,271 INFO L87 Difference]: Start difference. First operand 504 states and 666 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:57:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:04,547 INFO L93 Difference]: Finished difference Result 1103 states and 1508 transitions. [2022-07-22 17:57:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:04,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 273 [2022-07-22 17:57:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:04,550 INFO L225 Difference]: With dead ends: 1103 [2022-07-22 17:57:04,550 INFO L226 Difference]: Without dead ends: 807 [2022-07-22 17:57:04,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:04,552 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 219 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:04,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 592 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-07-22 17:57:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 638. [2022-07-22 17:57:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 511 states have (on average 1.3150684931506849) internal successors, (672), 517 states have internal predecessors, (672), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2022-07-22 17:57:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 842 transitions. [2022-07-22 17:57:04,590 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 842 transitions. Word has length 273 [2022-07-22 17:57:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:04,590 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 842 transitions. [2022-07-22 17:57:04,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:57:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 842 transitions. [2022-07-22 17:57:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-22 17:57:04,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:04,593 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:57:04,593 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1894509391, now seen corresponding path program 1 times [2022-07-22 17:57:04,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:04,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865191311] [2022-07-22 17:57:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-22 17:57:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-22 17:57:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 17:57:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-22 17:57:04,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:04,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865191311] [2022-07-22 17:57:04,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865191311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:04,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:04,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272828737] [2022-07-22 17:57:04,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:04,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:04,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:04,697 INFO L87 Difference]: Start difference. First operand 638 states and 842 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:57:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:04,989 INFO L93 Difference]: Finished difference Result 1404 states and 1902 transitions. [2022-07-22 17:57:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:04,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 274 [2022-07-22 17:57:04,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:04,994 INFO L225 Difference]: With dead ends: 1404 [2022-07-22 17:57:04,994 INFO L226 Difference]: Without dead ends: 1013 [2022-07-22 17:57:04,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:04,995 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 222 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:04,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 625 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-07-22 17:57:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 999. [2022-07-22 17:57:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 792 states have (on average 1.3396464646464648) internal successors, (1061), 806 states have internal predecessors, (1061), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2022-07-22 17:57:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1339 transitions. [2022-07-22 17:57:05,035 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1339 transitions. Word has length 274 [2022-07-22 17:57:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:05,036 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1339 transitions. [2022-07-22 17:57:05,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:57:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1339 transitions. [2022-07-22 17:57:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-22 17:57:05,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:05,038 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:05,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 17:57:05,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash -58219654, now seen corresponding path program 1 times [2022-07-22 17:57:05,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:05,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79879478] [2022-07-22 17:57:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-22 17:57:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-22 17:57:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-22 17:57:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:05,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79879478] [2022-07-22 17:57:05,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79879478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:05,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:05,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495889967] [2022-07-22 17:57:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:05,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:05,147 INFO L87 Difference]: Start difference. First operand 999 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:57:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:05,444 INFO L93 Difference]: Finished difference Result 2307 states and 3165 transitions. [2022-07-22 17:57:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:05,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2022-07-22 17:57:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:05,453 INFO L225 Difference]: With dead ends: 2307 [2022-07-22 17:57:05,453 INFO L226 Difference]: Without dead ends: 1601 [2022-07-22 17:57:05,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:05,455 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 224 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:05,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 657 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-07-22 17:57:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1575. [2022-07-22 17:57:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1236 states have (on average 1.3632686084142396) internal successors, (1685), 1264 states have internal predecessors, (1685), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-22 17:57:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2147 transitions. [2022-07-22 17:57:05,535 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2147 transitions. Word has length 275 [2022-07-22 17:57:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:05,535 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2147 transitions. [2022-07-22 17:57:05,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:57:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2147 transitions. [2022-07-22 17:57:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-22 17:57:05,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:05,539 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 17:57:05,539 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash -452586440, now seen corresponding path program 1 times [2022-07-22 17:57:05,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:05,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417035062] [2022-07-22 17:57:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:05,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-22 17:57:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-22 17:57:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-22 17:57:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:05,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417035062] [2022-07-22 17:57:05,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417035062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:05,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242896695] [2022-07-22 17:57:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:05,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:05,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:05,675 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) [2022-07-22 17:57:05,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:57:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:57:05,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-22 17:57:05,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:05,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242896695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:05,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:05,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-22 17:57:05,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652494150] [2022-07-22 17:57:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:57:05,849 INFO L87 Difference]: Start difference. First operand 1575 states and 2147 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:57:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:05,943 INFO L93 Difference]: Finished difference Result 2897 states and 4006 transitions. [2022-07-22 17:57:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2022-07-22 17:57:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:05,949 INFO L225 Difference]: With dead ends: 2897 [2022-07-22 17:57:05,949 INFO L226 Difference]: Without dead ends: 1575 [2022-07-22 17:57:05,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:57:05,953 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 51 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:05,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 702 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2022-07-22 17:57:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2022-07-22 17:57:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1236 states have (on average 1.3438511326860842) internal successors, (1661), 1264 states have internal predecessors, (1661), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-22 17:57:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2123 transitions. [2022-07-22 17:57:06,037 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2123 transitions. Word has length 275 [2022-07-22 17:57:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:06,038 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2123 transitions. [2022-07-22 17:57:06,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:57:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2123 transitions. [2022-07-22 17:57:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-22 17:57:06,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:06,040 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:06,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:06,258 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,SelfDestructingSolverStorable25 [2022-07-22 17:57:06,258 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1485642055, now seen corresponding path program 1 times [2022-07-22 17:57:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:06,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489505868] [2022-07-22 17:57:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-22 17:57:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-07-22 17:57:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489505868] [2022-07-22 17:57:06,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489505868] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22510206] [2022-07-22 17:57:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:06,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:06,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:06,368 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) [2022-07-22 17:57:06,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:57:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:06,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:57:06,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-07-22 17:57:06,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:06,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22510206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:06,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:06,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-22 17:57:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804629856] [2022-07-22 17:57:06,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:06,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:06,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:06,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:57:06,532 INFO L87 Difference]: Start difference. First operand 1575 states and 2123 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:57:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:06,611 INFO L93 Difference]: Finished difference Result 2897 states and 3950 transitions. [2022-07-22 17:57:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:06,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 276 [2022-07-22 17:57:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:06,617 INFO L225 Difference]: With dead ends: 2897 [2022-07-22 17:57:06,617 INFO L226 Difference]: Without dead ends: 1623 [2022-07-22 17:57:06,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:57:06,620 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 15 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:06,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 725 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-07-22 17:57:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2022-07-22 17:57:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1276 states have (on average 1.3456112852664577) internal successors, (1717), 1304 states have internal predecessors, (1717), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-22 17:57:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2179 transitions. [2022-07-22 17:57:06,732 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2179 transitions. Word has length 276 [2022-07-22 17:57:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:06,733 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2179 transitions. [2022-07-22 17:57:06,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:57:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2179 transitions. [2022-07-22 17:57:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-22 17:57:06,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:06,736 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:06,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:06,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 17:57:06,954 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash 703925714, now seen corresponding path program 1 times [2022-07-22 17:57:06,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:06,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100788939] [2022-07-22 17:57:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:06,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-22 17:57:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-22 17:57:07,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:07,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100788939] [2022-07-22 17:57:07,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100788939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:07,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:07,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:57:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456900027] [2022-07-22 17:57:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:07,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:57:07,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:57:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:57:07,113 INFO L87 Difference]: Start difference. First operand 1623 states and 2179 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 17:57:07,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:07,572 INFO L93 Difference]: Finished difference Result 2481 states and 3558 transitions. [2022-07-22 17:57:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:57:07,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 277 [2022-07-22 17:57:07,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:07,582 INFO L225 Difference]: With dead ends: 2481 [2022-07-22 17:57:07,582 INFO L226 Difference]: Without dead ends: 2479 [2022-07-22 17:57:07,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:57:07,584 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 250 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:07,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1646 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:57:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-07-22 17:57:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 1671. [2022-07-22 17:57:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1308 states have (on average 1.3371559633027523) internal successors, (1749), 1344 states have internal predecessors, (1749), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2022-07-22 17:57:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2227 transitions. [2022-07-22 17:57:07,667 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2227 transitions. Word has length 277 [2022-07-22 17:57:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:07,667 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2227 transitions. [2022-07-22 17:57:07,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 17:57:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2227 transitions. [2022-07-22 17:57:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-22 17:57:07,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:07,670 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:07,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 17:57:07,670 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:07,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1034356429, now seen corresponding path program 1 times [2022-07-22 17:57:07,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:07,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873261035] [2022-07-22 17:57:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-22 17:57:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-22 17:57:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-22 17:57:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:07,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873261035] [2022-07-22 17:57:07,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873261035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:07,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855182104] [2022-07-22 17:57:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:07,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:07,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:07,842 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) [2022-07-22 17:57:07,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 17:57:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:07,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:57:07,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-22 17:57:08,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-22 17:57:08,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855182104] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:08,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:08,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-07-22 17:57:08,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926203206] [2022-07-22 17:57:08,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:08,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 17:57:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 17:57:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:57:08,453 INFO L87 Difference]: Start difference. First operand 1671 states and 2227 transitions. Second operand has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-22 17:57:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:10,108 INFO L93 Difference]: Finished difference Result 4890 states and 7030 transitions. [2022-07-22 17:57:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 17:57:10,109 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 285 [2022-07-22 17:57:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:10,122 INFO L225 Difference]: With dead ends: 4890 [2022-07-22 17:57:10,122 INFO L226 Difference]: Without dead ends: 3520 [2022-07-22 17:57:10,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 17:57:10,126 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 708 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:10,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 3018 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:57:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2022-07-22 17:57:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 2498. [2022-07-22 17:57:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 1952 states have (on average 1.3288934426229508) internal successors, (2594), 2004 states have internal predecessors, (2594), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2022-07-22 17:57:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3314 transitions. [2022-07-22 17:57:10,306 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3314 transitions. Word has length 285 [2022-07-22 17:57:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:10,306 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3314 transitions. [2022-07-22 17:57:10,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-22 17:57:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3314 transitions. [2022-07-22 17:57:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-22 17:57:10,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:10,310 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:10,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:10,523 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -72742412, now seen corresponding path program 1 times [2022-07-22 17:57:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:10,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856619056] [2022-07-22 17:57:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-22 17:57:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-22 17:57:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-22 17:57:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:10,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856619056] [2022-07-22 17:57:10,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856619056] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:10,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023719009] [2022-07-22 17:57:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:10,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:10,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:10,601 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) [2022-07-22 17:57:10,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 17:57:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:10,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:57:10,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-07-22 17:57:10,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:10,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023719009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:10,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:10,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 17:57:10,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573054558] [2022-07-22 17:57:10,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:10,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:10,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:10,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:10,753 INFO L87 Difference]: Start difference. First operand 2498 states and 3314 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:57:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:10,898 INFO L93 Difference]: Finished difference Result 4829 states and 6504 transitions. [2022-07-22 17:57:10,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:10,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 285 [2022-07-22 17:57:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:10,909 INFO L225 Difference]: With dead ends: 4829 [2022-07-22 17:57:10,909 INFO L226 Difference]: Without dead ends: 2434 [2022-07-22 17:57:10,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:57:10,914 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 11 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:10,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 725 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-07-22 17:57:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2022-07-22 17:57:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 1908 states have (on average 1.3123689727463312) internal successors, (2504), 1960 states have internal predecessors, (2504), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2022-07-22 17:57:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3188 transitions. [2022-07-22 17:57:11,041 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3188 transitions. Word has length 285 [2022-07-22 17:57:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:11,041 INFO L495 AbstractCegarLoop]: Abstraction has 2434 states and 3188 transitions. [2022-07-22 17:57:11,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:57:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3188 transitions. [2022-07-22 17:57:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-22 17:57:11,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:11,045 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:11,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:11,260 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -658847465, now seen corresponding path program 1 times [2022-07-22 17:57:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343854013] [2022-07-22 17:57:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 17:57:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:57:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 17:57:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:57:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-22 17:57:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-22 17:57:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-22 17:57:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-22 17:57:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-22 17:57:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-22 17:57:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-07-22 17:57:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-07-22 17:57:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343854013] [2022-07-22 17:57:11,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343854013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150168643] [2022-07-22 17:57:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:11,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:11,333 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) [2022-07-22 17:57:11,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 17:57:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:11,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:57:11,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-07-22 17:57:11,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:11,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150168643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:11,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:11,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 17:57:11,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886514511] [2022-07-22 17:57:11,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:11,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:11,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:11,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:11,493 INFO L87 Difference]: Start difference. First operand 2434 states and 3188 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:57:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:11,613 INFO L93 Difference]: Finished difference Result 4590 states and 6117 transitions. [2022-07-22 17:57:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:11,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 288 [2022-07-22 17:57:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:11,620 INFO L225 Difference]: With dead ends: 4590 [2022-07-22 17:57:11,620 INFO L226 Difference]: Without dead ends: 2241 [2022-07-22 17:57:11,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:57:11,626 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 8 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:11,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 728 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-07-22 17:57:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2241. [2022-07-22 17:57:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1745 states have (on average 1.3060171919770773) internal successors, (2279), 1797 states have internal predecessors, (2279), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2022-07-22 17:57:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2925 transitions. [2022-07-22 17:57:11,713 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2925 transitions. Word has length 288 [2022-07-22 17:57:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:11,714 INFO L495 AbstractCegarLoop]: Abstraction has 2241 states and 2925 transitions. [2022-07-22 17:57:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:57:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2925 transitions. [2022-07-22 17:57:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-22 17:57:11,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:11,716 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:11,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:11,934 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash 940177722, now seen corresponding path program 1 times [2022-07-22 17:57:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:11,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211254160] [2022-07-22 17:57:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-22 17:57:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-22 17:57:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 17:57:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-22 17:57:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2022-07-22 17:57:12,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211254160] [2022-07-22 17:57:12,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211254160] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778238057] [2022-07-22 17:57:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:12,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:12,195 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) [2022-07-22 17:57:12,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 17:57:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:12,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 17:57:12,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-07-22 17:57:12,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:12,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778238057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:12,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:12,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2022-07-22 17:57:12,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370165972] [2022-07-22 17:57:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:12,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:57:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:57:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2022-07-22 17:57:12,540 INFO L87 Difference]: Start difference. First operand 2241 states and 2925 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 17:57:13,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:13,495 INFO L93 Difference]: Finished difference Result 8387 states and 11327 transitions. [2022-07-22 17:57:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 17:57:13,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 300 [2022-07-22 17:57:13,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:13,530 INFO L225 Difference]: With dead ends: 8387 [2022-07-22 17:57:13,530 INFO L226 Difference]: Without dead ends: 6741 [2022-07-22 17:57:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 17:57:13,536 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1124 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:13,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 3777 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:57:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2022-07-22 17:57:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 5317. [2022-07-22 17:57:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 4098 states have (on average 1.2962420693020986) internal successors, (5312), 4226 states have internal predecessors, (5312), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2022-07-22 17:57:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 6886 transitions. [2022-07-22 17:57:13,841 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 6886 transitions. Word has length 300 [2022-07-22 17:57:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:13,841 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 6886 transitions. [2022-07-22 17:57:13,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 17:57:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 6886 transitions. [2022-07-22 17:57:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-22 17:57:13,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:13,845 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:13,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:14,062 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,SelfDestructingSolverStorable31 [2022-07-22 17:57:14,062 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:14,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1154930967, now seen corresponding path program 1 times [2022-07-22 17:57:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:14,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339387133] [2022-07-22 17:57:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-07-22 17:57:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-22 17:57:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-22 17:57:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:57:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-07-22 17:57:14,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:14,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339387133] [2022-07-22 17:57:14,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339387133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:14,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:14,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:57:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030826287] [2022-07-22 17:57:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:57:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:57:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:57:14,180 INFO L87 Difference]: Start difference. First operand 5317 states and 6886 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 17:57:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:15,015 INFO L93 Difference]: Finished difference Result 16895 states and 24131 transitions. [2022-07-22 17:57:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:57:15,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 306 [2022-07-22 17:57:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:15,050 INFO L225 Difference]: With dead ends: 16895 [2022-07-22 17:57:15,050 INFO L226 Difference]: Without dead ends: 12113 [2022-07-22 17:57:15,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:57:15,062 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 467 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:15,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 2189 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:57:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12113 states. [2022-07-22 17:57:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12113 to 5749. [2022-07-22 17:57:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5749 states, 4446 states have (on average 1.3063427800269904) internal successors, (5808), 4574 states have internal predecessors, (5808), 871 states have call successors, (871), 431 states have call predecessors, (871), 431 states have return successors, (871), 751 states have call predecessors, (871), 871 states have call successors, (871) [2022-07-22 17:57:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5749 states to 5749 states and 7550 transitions. [2022-07-22 17:57:15,469 INFO L78 Accepts]: Start accepts. Automaton has 5749 states and 7550 transitions. Word has length 306 [2022-07-22 17:57:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:15,470 INFO L495 AbstractCegarLoop]: Abstraction has 5749 states and 7550 transitions. [2022-07-22 17:57:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 17:57:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5749 states and 7550 transitions. [2022-07-22 17:57:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-22 17:57:15,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:15,473 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 17:57:15,473 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -675484013, now seen corresponding path program 1 times [2022-07-22 17:57:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:15,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235120050] [2022-07-22 17:57:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:57:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-22 17:57:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-22 17:57:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-07-22 17:57:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-22 17:57:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-22 17:57:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:57:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-07-22 17:57:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:15,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235120050] [2022-07-22 17:57:15,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235120050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:15,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:15,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:57:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679271903] [2022-07-22 17:57:15,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:15,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:57:15,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:57:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:57:15,579 INFO L87 Difference]: Start difference. First operand 5749 states and 7550 transitions. Second operand has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 17:57:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:16,049 INFO L93 Difference]: Finished difference Result 10805 states and 14237 transitions. [2022-07-22 17:57:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:57:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 306 [2022-07-22 17:57:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:16,067 INFO L225 Difference]: With dead ends: 10805 [2022-07-22 17:57:16,067 INFO L226 Difference]: Without dead ends: 5656 [2022-07-22 17:57:16,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:57:16,077 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 59 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:16,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 879 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5656 states. [2022-07-22 17:57:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5656 to 5656. [2022-07-22 17:57:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 4368 states have (on average 1.3047161172161172) internal successors, (5699), 4488 states have internal predecessors, (5699), 864 states have call successors, (864), 424 states have call predecessors, (864), 423 states have return successors, (863), 750 states have call predecessors, (863), 863 states have call successors, (863) [2022-07-22 17:57:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 7426 transitions. [2022-07-22 17:57:16,389 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 7426 transitions. Word has length 306 [2022-07-22 17:57:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:16,389 INFO L495 AbstractCegarLoop]: Abstraction has 5656 states and 7426 transitions. [2022-07-22 17:57:16,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 17:57:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 7426 transitions. [2022-07-22 17:57:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-07-22 17:57:16,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:16,392 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:16,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 17:57:16,392 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1100237527, now seen corresponding path program 1 times [2022-07-22 17:57:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:16,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739668384] [2022-07-22 17:57:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 17:57:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 17:57:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-22 17:57:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 17:57:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:57:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 17:57:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-22 17:57:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-22 17:57:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-07-22 17:57:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:16,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739668384] [2022-07-22 17:57:16,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739668384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:16,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:16,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:57:16,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690872256] [2022-07-22 17:57:16,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:16,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:57:16,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:16,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:57:16,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:57:16,479 INFO L87 Difference]: Start difference. First operand 5656 states and 7426 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-22 17:57:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:17,005 INFO L93 Difference]: Finished difference Result 11313 states and 14814 transitions. [2022-07-22 17:57:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:57:17,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 310 [2022-07-22 17:57:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:17,022 INFO L225 Difference]: With dead ends: 11313 [2022-07-22 17:57:17,022 INFO L226 Difference]: Without dead ends: 5909 [2022-07-22 17:57:17,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:57:17,032 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 304 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:17,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 462 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5909 states. [2022-07-22 17:57:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5909 to 2889. [2022-07-22 17:57:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2254 states have (on average 1.2781721384205855) internal successors, (2881), 2321 states have internal predecessors, (2881), 424 states have call successors, (424), 211 states have call predecessors, (424), 210 states have return successors, (423), 363 states have call predecessors, (423), 423 states have call successors, (423) [2022-07-22 17:57:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 3728 transitions. [2022-07-22 17:57:17,280 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 3728 transitions. Word has length 310 [2022-07-22 17:57:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:17,281 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 3728 transitions. [2022-07-22 17:57:17,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-22 17:57:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 3728 transitions. [2022-07-22 17:57:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-07-22 17:57:17,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:17,284 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:17,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 17:57:17,284 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1593658663, now seen corresponding path program 1 times [2022-07-22 17:57:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:17,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098389817] [2022-07-22 17:57:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 17:57:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 17:57:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-22 17:57:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 17:57:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:57:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 17:57:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-22 17:57:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-22 17:57:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-07-22 17:57:17,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:17,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098389817] [2022-07-22 17:57:17,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098389817] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:17,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990197957] [2022-07-22 17:57:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:17,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:17,478 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) [2022-07-22 17:57:17,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 17:57:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:17,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 17:57:17,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-07-22 17:57:17,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:17,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990197957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:17,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:17,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-07-22 17:57:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454931317] [2022-07-22 17:57:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:57:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:57:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:57:17,760 INFO L87 Difference]: Start difference. First operand 2889 states and 3728 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 17:57:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:18,547 INFO L93 Difference]: Finished difference Result 7495 states and 10062 transitions. [2022-07-22 17:57:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:57:18,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 310 [2022-07-22 17:57:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:18,558 INFO L225 Difference]: With dead ends: 7495 [2022-07-22 17:57:18,559 INFO L226 Difference]: Without dead ends: 5067 [2022-07-22 17:57:18,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-07-22 17:57:18,562 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 437 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:18,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2668 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:57:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2022-07-22 17:57:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 3421. [2022-07-22 17:57:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2664 states have (on average 1.2713963963963963) internal successors, (3387), 2747 states have internal predecessors, (3387), 506 states have call successors, (506), 251 states have call predecessors, (506), 250 states have return successors, (505), 429 states have call predecessors, (505), 505 states have call successors, (505) [2022-07-22 17:57:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4398 transitions. [2022-07-22 17:57:18,787 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4398 transitions. Word has length 310 [2022-07-22 17:57:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:18,788 INFO L495 AbstractCegarLoop]: Abstraction has 3421 states and 4398 transitions. [2022-07-22 17:57:18,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 17:57:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4398 transitions. [2022-07-22 17:57:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-07-22 17:57:18,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:18,791 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:18,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:19,003 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,SelfDestructingSolverStorable35 [2022-07-22 17:57:19,003 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2025975513, now seen corresponding path program 1 times [2022-07-22 17:57:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412827210] [2022-07-22 17:57:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 17:57:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 17:57:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-22 17:57:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 17:57:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:57:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 17:57:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-22 17:57:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-22 17:57:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-22 17:57:19,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:19,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412827210] [2022-07-22 17:57:19,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412827210] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:19,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965956616] [2022-07-22 17:57:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:19,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:19,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:19,163 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) [2022-07-22 17:57:19,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 17:57:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:19,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 17:57:19,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-22 17:57:19,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-22 17:57:19,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965956616] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:19,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:19,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 18 [2022-07-22 17:57:19,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252037794] [2022-07-22 17:57:19,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 17:57:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 17:57:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:57:19,591 INFO L87 Difference]: Start difference. First operand 3421 states and 4398 transitions. Second operand has 18 states, 18 states have (on average 9.0) internal successors, (162), 16 states have internal predecessors, (162), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-22 17:57:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:23,389 INFO L93 Difference]: Finished difference Result 9221 states and 12391 transitions. [2022-07-22 17:57:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-22 17:57:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 16 states have internal predecessors, (162), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) Word has length 310 [2022-07-22 17:57:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:23,407 INFO L225 Difference]: With dead ends: 9221 [2022-07-22 17:57:23,408 INFO L226 Difference]: Without dead ends: 6237 [2022-07-22 17:57:23,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=505, Invalid=3035, Unknown=0, NotChecked=0, Total=3540 [2022-07-22 17:57:23,414 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1769 mSDsluCounter, 5033 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 6521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:23,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 5661 Invalid, 6521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 17:57:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2022-07-22 17:57:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 3086. [2022-07-22 17:57:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 2406 states have (on average 1.2660016625103907) internal successors, (3046), 2479 states have internal predecessors, (3046), 450 states have call successors, (450), 230 states have call predecessors, (450), 229 states have return successors, (449), 383 states have call predecessors, (449), 449 states have call successors, (449) [2022-07-22 17:57:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3945 transitions. [2022-07-22 17:57:23,665 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3945 transitions. Word has length 310 [2022-07-22 17:57:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:23,665 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 3945 transitions. [2022-07-22 17:57:23,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 16 states have internal predecessors, (162), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-22 17:57:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3945 transitions. [2022-07-22 17:57:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-22 17:57:23,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:23,668 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:23,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:23,879 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,SelfDestructingSolverStorable36 [2022-07-22 17:57:23,880 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:23,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash 520724073, now seen corresponding path program 1 times [2022-07-22 17:57:23,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:23,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282550405] [2022-07-22 17:57:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 17:57:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 17:57:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-22 17:57:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 17:57:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-22 17:57:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-22 17:57:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-22 17:57:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-22 17:57:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-22 17:57:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2022-07-22 17:57:23,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:23,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282550405] [2022-07-22 17:57:23,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282550405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:23,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:23,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:57:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382503481] [2022-07-22 17:57:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:23,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:23,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:23,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:23,969 INFO L87 Difference]: Start difference. First operand 3086 states and 3945 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:57:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:24,588 INFO L93 Difference]: Finished difference Result 5338 states and 6866 transitions. [2022-07-22 17:57:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:57:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 322 [2022-07-22 17:57:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:24,595 INFO L225 Difference]: With dead ends: 5338 [2022-07-22 17:57:24,595 INFO L226 Difference]: Without dead ends: 2776 [2022-07-22 17:57:24,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:57:24,600 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 498 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:24,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 968 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:57:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-07-22 17:57:24,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2446. [2022-07-22 17:57:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 1919 states have (on average 1.2480458572173008) internal successors, (2395), 1971 states have internal predecessors, (2395), 352 states have call successors, (352), 174 states have call predecessors, (352), 174 states have return successors, (352), 300 states have call predecessors, (352), 352 states have call successors, (352) [2022-07-22 17:57:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3099 transitions. [2022-07-22 17:57:24,800 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3099 transitions. Word has length 322 [2022-07-22 17:57:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:24,801 INFO L495 AbstractCegarLoop]: Abstraction has 2446 states and 3099 transitions. [2022-07-22 17:57:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:57:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3099 transitions. [2022-07-22 17:57:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-07-22 17:57:24,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:24,807 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:24,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-22 17:57:24,807 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash -601570683, now seen corresponding path program 1 times [2022-07-22 17:57:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:24,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86896052] [2022-07-22 17:57:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 17:57:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 17:57:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-22 17:57:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 17:57:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-22 17:57:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-22 17:57:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-22 17:57:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-22 17:57:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-22 17:57:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-07-22 17:57:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-22 17:57:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-22 17:57:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-22 17:57:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-22 17:57:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-07-22 17:57:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-07-22 17:57:24,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:24,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86896052] [2022-07-22 17:57:24,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86896052] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:24,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015056129] [2022-07-22 17:57:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:24,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:24,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:24,957 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) [2022-07-22 17:57:24,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 17:57:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:25,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 17:57:25,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 240 proven. 97 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2022-07-22 17:57:25,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 34 proven. 77 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-07-22 17:57:25,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015056129] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:25,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:25,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 27 [2022-07-22 17:57:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342849954] [2022-07-22 17:57:25,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:25,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 17:57:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 17:57:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-22 17:57:25,878 INFO L87 Difference]: Start difference. First operand 2446 states and 3099 transitions. Second operand has 27 states, 27 states have (on average 9.74074074074074) internal successors, (263), 23 states have internal predecessors, (263), 8 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 11 states have call predecessors, (65), 8 states have call successors, (65) [2022-07-22 17:57:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:40,897 INFO L93 Difference]: Finished difference Result 17961 states and 24378 transitions. [2022-07-22 17:57:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2022-07-22 17:57:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.74074074074074) internal successors, (263), 23 states have internal predecessors, (263), 8 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 11 states have call predecessors, (65), 8 states have call successors, (65) Word has length 371 [2022-07-22 17:57:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:40,930 INFO L225 Difference]: With dead ends: 17961 [2022-07-22 17:57:40,931 INFO L226 Difference]: Without dead ends: 15870 [2022-07-22 17:57:40,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20308 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6115, Invalid=48407, Unknown=0, NotChecked=0, Total=54522 [2022-07-22 17:57:40,947 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 3456 mSDsluCounter, 17990 mSDsCounter, 0 mSdLazyCounter, 18842 mSolverCounterSat, 3478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3456 SdHoareTripleChecker+Valid, 19807 SdHoareTripleChecker+Invalid, 22320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3478 IncrementalHoareTripleChecker+Valid, 18842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:40,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3456 Valid, 19807 Invalid, 22320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3478 Valid, 18842 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-07-22 17:57:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15870 states. [2022-07-22 17:57:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15870 to 9782. [2022-07-22 17:57:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9782 states, 7477 states have (on average 1.2701618296108064) internal successors, (9497), 7638 states have internal predecessors, (9497), 1586 states have call successors, (1586), 682 states have call predecessors, (1586), 718 states have return successors, (1658), 1461 states have call predecessors, (1658), 1586 states have call successors, (1658) [2022-07-22 17:57:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9782 states to 9782 states and 12741 transitions. [2022-07-22 17:57:41,868 INFO L78 Accepts]: Start accepts. Automaton has 9782 states and 12741 transitions. Word has length 371 [2022-07-22 17:57:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:41,868 INFO L495 AbstractCegarLoop]: Abstraction has 9782 states and 12741 transitions. [2022-07-22 17:57:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.74074074074074) internal successors, (263), 23 states have internal predecessors, (263), 8 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 11 states have call predecessors, (65), 8 states have call successors, (65) [2022-07-22 17:57:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9782 states and 12741 transitions. [2022-07-22 17:57:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-07-22 17:57:41,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:41,887 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:41,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:42,106 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,SelfDestructingSolverStorable38 [2022-07-22 17:57:42,106 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash -679856538, now seen corresponding path program 1 times [2022-07-22 17:57:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811623202] [2022-07-22 17:57:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 17:57:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 17:57:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 17:57:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-22 17:57:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 17:57:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-22 17:57:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-22 17:57:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-22 17:57:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-22 17:57:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-22 17:57:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-07-22 17:57:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-22 17:57:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-22 17:57:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-22 17:57:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-22 17:57:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-07-22 17:57:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-07-22 17:57:42,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:42,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811623202] [2022-07-22 17:57:42,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811623202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:42,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774117689] [2022-07-22 17:57:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:42,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:42,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:42,203 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) [2022-07-22 17:57:42,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 17:57:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:42,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 17:57:42,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2022-07-22 17:57:42,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:57:42,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774117689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:42,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:57:42,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-22 17:57:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713473566] [2022-07-22 17:57:42,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:42,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:57:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:57:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:57:42,467 INFO L87 Difference]: Start difference. First operand 9782 states and 12741 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 17:57:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:44,052 INFO L93 Difference]: Finished difference Result 22454 states and 29785 transitions. [2022-07-22 17:57:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:57:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 371 [2022-07-22 17:57:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:44,081 INFO L225 Difference]: With dead ends: 22454 [2022-07-22 17:57:44,081 INFO L226 Difference]: Without dead ends: 13606 [2022-07-22 17:57:44,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:57:44,093 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 479 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:44,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2342 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:57:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13606 states. [2022-07-22 17:57:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13606 to 8040. [2022-07-22 17:57:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8040 states, 6165 states have (on average 1.2472019464720194) internal successors, (7689), 6336 states have internal predecessors, (7689), 1228 states have call successors, (1228), 610 states have call predecessors, (1228), 646 states have return successors, (1276), 1093 states have call predecessors, (1276), 1228 states have call successors, (1276) [2022-07-22 17:57:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8040 states to 8040 states and 10193 transitions. [2022-07-22 17:57:44,883 INFO L78 Accepts]: Start accepts. Automaton has 8040 states and 10193 transitions. Word has length 371 [2022-07-22 17:57:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:44,884 INFO L495 AbstractCegarLoop]: Abstraction has 8040 states and 10193 transitions. [2022-07-22 17:57:44,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 17:57:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 8040 states and 10193 transitions. [2022-07-22 17:57:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-22 17:57:44,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:44,896 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:44,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:45,115 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:45,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -455111190, now seen corresponding path program 1 times [2022-07-22 17:57:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:45,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132888558] [2022-07-22 17:57:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:57:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:57:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:57:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:57:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:57:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:57:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:57:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:57:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:57:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:57:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:57:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:57:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:57:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:57:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:57:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:57:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:57:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-22 17:57:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:57:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:57:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-22 17:57:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:57:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:57:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 17:57:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-22 17:57:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:57:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-22 17:57:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-22 17:57:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-22 17:57:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 17:57:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-22 17:57:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-07-22 17:57:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-22 17:57:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-07-22 17:57:45,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:45,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132888558] [2022-07-22 17:57:45,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132888558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286107126] [2022-07-22 17:57:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:45,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:45,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:45,312 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) [2022-07-22 17:57:45,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 17:57:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:45,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 17:57:45,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 206 proven. 121 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-07-22 17:57:45,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 33 proven. 72 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-07-22 17:57:46,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286107126] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:46,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:46,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2022-07-22 17:57:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471624300] [2022-07-22 17:57:46,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:46,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 17:57:46,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:46,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 17:57:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2022-07-22 17:57:46,210 INFO L87 Difference]: Start difference. First operand 8040 states and 10193 transitions. Second operand has 30 states, 30 states have (on average 8.933333333333334) internal successors, (268), 26 states have internal predecessors, (268), 9 states have call successors, (68), 9 states have call predecessors, (68), 13 states have return successors, (68), 12 states have call predecessors, (68), 9 states have call successors, (68) [2022-07-22 17:58:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:24,615 INFO L93 Difference]: Finished difference Result 45208 states and 60599 transitions. [2022-07-22 17:58:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 508 states. [2022-07-22 17:58:24,615 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.933333333333334) internal successors, (268), 26 states have internal predecessors, (268), 9 states have call successors, (68), 9 states have call predecessors, (68), 13 states have return successors, (68), 12 states have call predecessors, (68), 9 states have call successors, (68) Word has length 372 [2022-07-22 17:58:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:24,702 INFO L225 Difference]: With dead ends: 45208 [2022-07-22 17:58:24,702 INFO L226 Difference]: Without dead ends: 38010 [2022-07-22 17:58:24,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1376 GetRequests, 842 SyntacticMatches, 1 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125460 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=20351, Invalid=265339, Unknown=0, NotChecked=0, Total=285690 [2022-07-22 17:58:24,729 INFO L413 NwaCegarLoop]: 2024 mSDtfsCounter, 6057 mSDsluCounter, 21419 mSDsCounter, 0 mSdLazyCounter, 32662 mSolverCounterSat, 10537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6057 SdHoareTripleChecker+Valid, 23443 SdHoareTripleChecker+Invalid, 43199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10537 IncrementalHoareTripleChecker+Valid, 32662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:24,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6057 Valid, 23443 Invalid, 43199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10537 Valid, 32662 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2022-07-22 17:58:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38010 states. [2022-07-22 17:58:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38010 to 13505. [2022-07-22 17:58:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13505 states, 10343 states have (on average 1.2499274871894035) internal successors, (12928), 10635 states have internal predecessors, (12928), 2065 states have call successors, (2065), 1016 states have call predecessors, (2065), 1096 states have return successors, (2185), 1853 states have call predecessors, (2185), 2065 states have call successors, (2185) [2022-07-22 17:58:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 17178 transitions. [2022-07-22 17:58:26,472 INFO L78 Accepts]: Start accepts. Automaton has 13505 states and 17178 transitions. Word has length 372 [2022-07-22 17:58:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:26,472 INFO L495 AbstractCegarLoop]: Abstraction has 13505 states and 17178 transitions. [2022-07-22 17:58:26,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.933333333333334) internal successors, (268), 26 states have internal predecessors, (268), 9 states have call successors, (68), 9 states have call predecessors, (68), 13 states have return successors, (68), 12 states have call predecessors, (68), 9 states have call successors, (68) [2022-07-22 17:58:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13505 states and 17178 transitions. [2022-07-22 17:58:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-22 17:58:26,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:26,491 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:26,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-22 17:58:26,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:26,692 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash -265762293, now seen corresponding path program 1 times [2022-07-22 17:58:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:26,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408062261] [2022-07-22 17:58:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:26,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:58:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:58:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:58:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:58:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:58:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:58:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:58:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:58:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:58:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:58:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:58:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:58:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:58:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:58:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:58:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:58:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-22 17:58:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:58:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:58:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-22 17:58:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:58:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:58:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 17:58:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-22 17:58:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:58:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-22 17:58:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-22 17:58:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-22 17:58:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 17:58:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-22 17:58:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-07-22 17:58:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-22 17:58:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2022-07-22 17:58:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408062261] [2022-07-22 17:58:26,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408062261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:26,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:58:26,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:58:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144381039] [2022-07-22 17:58:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:26,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:58:26,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:58:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:58:26,830 INFO L87 Difference]: Start difference. First operand 13505 states and 17178 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 5 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 17:58:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:28,560 INFO L93 Difference]: Finished difference Result 26441 states and 33651 transitions. [2022-07-22 17:58:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:58:28,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 5 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 372 [2022-07-22 17:58:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:28,591 INFO L225 Difference]: With dead ends: 26441 [2022-07-22 17:58:28,591 INFO L226 Difference]: Without dead ends: 13577 [2022-07-22 17:58:28,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:58:28,610 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 389 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:28,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 457 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:58:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13577 states. [2022-07-22 17:58:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13577 to 7503. [2022-07-22 17:58:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7503 states, 5841 states have (on average 1.2425954459852766) internal successors, (7258), 5966 states have internal predecessors, (7258), 1071 states have call successors, (1071), 550 states have call predecessors, (1071), 590 states have return successors, (1131), 986 states have call predecessors, (1131), 1071 states have call successors, (1131) [2022-07-22 17:58:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7503 states to 7503 states and 9460 transitions. [2022-07-22 17:58:29,810 INFO L78 Accepts]: Start accepts. Automaton has 7503 states and 9460 transitions. Word has length 372 [2022-07-22 17:58:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:29,811 INFO L495 AbstractCegarLoop]: Abstraction has 7503 states and 9460 transitions. [2022-07-22 17:58:29,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 5 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 17:58:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7503 states and 9460 transitions. [2022-07-22 17:58:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-22 17:58:29,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:29,821 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-22 17:58:29,821 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash -558663277, now seen corresponding path program 1 times [2022-07-22 17:58:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:29,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406002481] [2022-07-22 17:58:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:58:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:58:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:58:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:58:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:58:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:58:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:58:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:58:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:58:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:58:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:58:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:58:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:58:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:58:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:58:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-22 17:58:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 17:58:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-22 17:58:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:58:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-22 17:58:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:58:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:58:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 17:58:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-22 17:58:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:58:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-22 17:58:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-22 17:58:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-22 17:58:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 17:58:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-22 17:58:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-07-22 17:58:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-22 17:58:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-22 17:58:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:29,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406002481] [2022-07-22 17:58:29,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406002481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:29,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:58:29,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:58:29,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296079549] [2022-07-22 17:58:29,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:29,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:58:29,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:58:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:58:29,994 INFO L87 Difference]: Start difference. First operand 7503 states and 9460 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 5 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-22 17:58:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:31,351 INFO L93 Difference]: Finished difference Result 14491 states and 18355 transitions. [2022-07-22 17:58:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:58:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 5 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 372 [2022-07-22 17:58:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:31,363 INFO L225 Difference]: With dead ends: 14491 [2022-07-22 17:58:31,363 INFO L226 Difference]: Without dead ends: 7551 [2022-07-22 17:58:31,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:58:31,368 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 293 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:31,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 500 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:58:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2022-07-22 17:58:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 7545. [2022-07-22 17:58:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7545 states, 5847 states have (on average 1.2423465024799043) internal successors, (7264), 6002 states have internal predecessors, (7264), 1107 states have call successors, (1107), 550 states have call predecessors, (1107), 590 states have return successors, (1167), 992 states have call predecessors, (1167), 1107 states have call successors, (1167) [2022-07-22 17:58:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7545 states to 7545 states and 9538 transitions. [2022-07-22 17:58:32,450 INFO L78 Accepts]: Start accepts. Automaton has 7545 states and 9538 transitions. Word has length 372 [2022-07-22 17:58:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:32,450 INFO L495 AbstractCegarLoop]: Abstraction has 7545 states and 9538 transitions. [2022-07-22 17:58:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 5 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-22 17:58:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7545 states and 9538 transitions. [2022-07-22 17:58:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-22 17:58:32,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:32,460 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:32,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-22 17:58:32,460 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:32,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1636565589, now seen corresponding path program 1 times [2022-07-22 17:58:32,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:32,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980801224] [2022-07-22 17:58:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:58:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:58:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:58:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:58:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:58:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:58:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:58:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:58:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:58:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:58:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:58:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:58:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:58:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:58:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:58:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-22 17:58:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 17:58:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-22 17:58:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:58:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-22 17:58:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:58:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:58:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 17:58:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-22 17:58:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:58:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-22 17:58:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-22 17:58:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-22 17:58:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 17:58:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-22 17:58:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-07-22 17:58:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-22 17:58:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-07-22 17:58:32,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980801224] [2022-07-22 17:58:32,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980801224] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844775372] [2022-07-22 17:58:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:32,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:32,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:32,590 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) [2022-07-22 17:58:32,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 17:58:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:32,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:58:32,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-07-22 17:58:32,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:58:32,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844775372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:32,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:58:32,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 17:58:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102487806] [2022-07-22 17:58:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:32,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:58:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:58:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:58:32,799 INFO L87 Difference]: Start difference. First operand 7545 states and 9538 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 17:58:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:33,870 INFO L93 Difference]: Finished difference Result 15273 states and 19289 transitions. [2022-07-22 17:58:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:58:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 372 [2022-07-22 17:58:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:33,886 INFO L225 Difference]: With dead ends: 15273 [2022-07-22 17:58:33,887 INFO L226 Difference]: Without dead ends: 7425 [2022-07-22 17:58:33,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:58:33,898 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 40 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:33,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 681 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:58:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2022-07-22 17:58:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7425. [2022-07-22 17:58:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7425 states, 5767 states have (on average 1.2148430726547599) internal successors, (7006), 5902 states have internal predecessors, (7006), 1107 states have call successors, (1107), 550 states have call predecessors, (1107), 550 states have return successors, (1107), 972 states have call predecessors, (1107), 1107 states have call successors, (1107) [2022-07-22 17:58:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 9220 transitions. [2022-07-22 17:58:35,026 INFO L78 Accepts]: Start accepts. Automaton has 7425 states and 9220 transitions. Word has length 372 [2022-07-22 17:58:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:35,027 INFO L495 AbstractCegarLoop]: Abstraction has 7425 states and 9220 transitions. [2022-07-22 17:58:35,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 17:58:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7425 states and 9220 transitions. [2022-07-22 17:58:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-07-22 17:58:35,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:35,036 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:35,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-22 17:58:35,237 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 975808187, now seen corresponding path program 1 times [2022-07-22 17:58:35,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:35,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044326114] [2022-07-22 17:58:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:58:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:58:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:58:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:58:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:58:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:58:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:58:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:58:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:58:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:58:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:58:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:58:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:58:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:58:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:58:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-22 17:58:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 17:58:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-22 17:58:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:58:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-22 17:58:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:58:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-22 17:58:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 17:58:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-22 17:58:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-22 17:58:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-22 17:58:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-22 17:58:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-22 17:58:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 17:58:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-22 17:58:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-22 17:58:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-22 17:58:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-07-22 17:58:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-07-22 17:58:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044326114] [2022-07-22 17:58:35,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044326114] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203310008] [2022-07-22 17:58:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:35,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:35,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:35,386 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) [2022-07-22 17:58:35,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 17:58:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-22 17:58:35,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 352 proven. 126 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2022-07-22 17:58:35,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:58:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 51 proven. 204 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2022-07-22 17:58:36,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203310008] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:58:36,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:58:36,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 19] total 35 [2022-07-22 17:58:36,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988507960] [2022-07-22 17:58:36,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:58:36,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 17:58:36,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 17:58:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 17:58:36,500 INFO L87 Difference]: Start difference. First operand 7425 states and 9220 transitions. Second operand has 35 states, 34 states have (on average 8.970588235294118) internal successors, (305), 30 states have internal predecessors, (305), 11 states have call successors, (75), 10 states have call predecessors, (75), 12 states have return successors, (76), 13 states have call predecessors, (76), 10 states have call successors, (76) [2022-07-22 17:58:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:51,836 INFO L93 Difference]: Finished difference Result 34735 states and 47159 transitions. [2022-07-22 17:58:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-07-22 17:58:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 8.970588235294118) internal successors, (305), 30 states have internal predecessors, (305), 11 states have call successors, (75), 10 states have call predecessors, (75), 12 states have return successors, (76), 13 states have call predecessors, (76), 10 states have call successors, (76) Word has length 382 [2022-07-22 17:58:51,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:51,896 INFO L225 Difference]: With dead ends: 34735 [2022-07-22 17:58:51,896 INFO L226 Difference]: Without dead ends: 27989 [2022-07-22 17:58:51,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12261 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2799, Invalid=31983, Unknown=0, NotChecked=0, Total=34782 [2022-07-22 17:58:51,911 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 4670 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 13715 mSolverCounterSat, 2480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 13561 SdHoareTripleChecker+Invalid, 16195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2480 IncrementalHoareTripleChecker+Valid, 13715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:51,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 13561 Invalid, 16195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2480 Valid, 13715 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 17:58:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27989 states. [2022-07-22 17:58:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27989 to 7895. [2022-07-22 17:58:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7895 states, 6183 states have (on average 1.2097687206857513) internal successors, (7480), 6288 states have internal predecessors, (7480), 1120 states have call successors, (1120), 589 states have call predecessors, (1120), 591 states have return successors, (1124), 1017 states have call predecessors, (1124), 1120 states have call successors, (1124) [2022-07-22 17:58:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 9724 transitions. [2022-07-22 17:58:53,593 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 9724 transitions. Word has length 382 [2022-07-22 17:58:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 7895 states and 9724 transitions. [2022-07-22 17:58:53,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 8.970588235294118) internal successors, (305), 30 states have internal predecessors, (305), 11 states have call successors, (75), 10 states have call predecessors, (75), 12 states have return successors, (76), 13 states have call predecessors, (76), 10 states have call successors, (76) [2022-07-22 17:58:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 9724 transitions. [2022-07-22 17:58:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-07-22 17:58:53,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:53,607 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:53,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:53,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:53,827 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1029068009, now seen corresponding path program 1 times [2022-07-22 17:58:53,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:53,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472963904] [2022-07-22 17:58:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:58:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:58:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:58:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:58:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:58:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:58:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:58:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:58:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:58:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:58:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 17:58:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:58:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:58:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 17:58:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:58:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-22 17:58:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-22 17:58:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-22 17:58:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-22 17:58:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-22 17:58:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-22 17:58:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-22 17:58:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-22 17:58:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-22 17:58:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-22 17:58:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-22 17:58:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-22 17:58:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-22 17:58:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-07-22 17:58:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-22 17:58:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-07-22 17:58:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-07-22 17:58:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-07-22 17:58:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2022-07-22 17:58:53,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:53,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472963904] [2022-07-22 17:58:53,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472963904] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:53,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497318372] [2022-07-22 17:58:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:53,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:53,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:53,907 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) [2022-07-22 17:58:53,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 17:58:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:54,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:58:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2022-07-22 17:58:54,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:58:54,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497318372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:58:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 17:58:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424333185] [2022-07-22 17:58:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:58:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:58:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:58:54,111 INFO L87 Difference]: Start difference. First operand 7895 states and 9724 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 17:58:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:55,384 INFO L93 Difference]: Finished difference Result 15279 states and 18866 transitions. [2022-07-22 17:58:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:58:55,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 386 [2022-07-22 17:58:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:55,398 INFO L225 Difference]: With dead ends: 15279 [2022-07-22 17:58:55,398 INFO L226 Difference]: Without dead ends: 7385 [2022-07-22 17:58:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:58:55,405 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 28 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:55,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 688 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:58:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7385 states. [2022-07-22 17:58:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7385 to 7385. [2022-07-22 17:58:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7385 states, 5762 states have (on average 1.2136410968413744) internal successors, (6993), 5867 states have internal predecessors, (6993), 1071 states have call successors, (1071), 551 states have call predecessors, (1071), 551 states have return successors, (1071), 966 states have call predecessors, (1071), 1071 states have call successors, (1071) [2022-07-22 17:58:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 9135 transitions. [2022-07-22 17:58:56,700 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 9135 transitions. Word has length 386 [2022-07-22 17:58:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:56,700 INFO L495 AbstractCegarLoop]: Abstraction has 7385 states and 9135 transitions. [2022-07-22 17:58:56,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 17:58:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 9135 transitions. [2022-07-22 17:58:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-07-22 17:58:56,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:56,709 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:56,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:56,910 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -141953182, now seen corresponding path program 1 times [2022-07-22 17:58:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:56,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931558055] [2022-07-22 17:58:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:58:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:58:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:58:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:58:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:58:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:58:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:58:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:58:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:58:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:58:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:58:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:58:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:58:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:58:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:58:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:58:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:58:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-22 17:58:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 17:58:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-22 17:58:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-22 17:58:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-22 17:58:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-22 17:58:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 17:58:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-22 17:58:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-22 17:58:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-07-22 17:58:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-22 17:58:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-22 17:58:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-22 17:58:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-22 17:58:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-22 17:58:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-22 17:58:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-22 17:58:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-07-22 17:58:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2022-07-22 17:58:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:57,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931558055] [2022-07-22 17:58:57,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931558055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:57,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:58:57,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:58:57,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008992982] [2022-07-22 17:58:57,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:57,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:58:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:58:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:58:57,030 INFO L87 Difference]: Start difference. First operand 7385 states and 9135 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 8 states have internal predecessors, (129), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 17:59:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:01,209 INFO L93 Difference]: Finished difference Result 19968 states and 25712 transitions. [2022-07-22 17:59:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 17:59:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 8 states have internal predecessors, (129), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 393 [2022-07-22 17:59:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:01,236 INFO L225 Difference]: With dead ends: 19968 [2022-07-22 17:59:01,236 INFO L226 Difference]: Without dead ends: 13362 [2022-07-22 17:59:01,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 17:59:01,246 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 672 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2763 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:59:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13362 states. [2022-07-22 17:59:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13362 to 6935. [2022-07-22 17:59:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 5432 states have (on average 1.2082106038291605) internal successors, (6563), 5532 states have internal predecessors, (6563), 971 states have call successors, (971), 531 states have call predecessors, (971), 531 states have return successors, (971), 871 states have call predecessors, (971), 971 states have call successors, (971) [2022-07-22 17:59:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 8505 transitions. [2022-07-22 17:59:02,573 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 8505 transitions. Word has length 393 [2022-07-22 17:59:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:02,573 INFO L495 AbstractCegarLoop]: Abstraction has 6935 states and 8505 transitions. [2022-07-22 17:59:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 8 states have internal predecessors, (129), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 17:59:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 8505 transitions. [2022-07-22 17:59:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-07-22 17:59:02,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:02,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 17:59:02,582 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:02,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:02,582 INFO L85 PathProgramCache]: Analyzing trace with hash -995226780, now seen corresponding path program 1 times [2022-07-22 17:59:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:02,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242619177] [2022-07-22 17:59:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:02,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:59:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:59:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:59:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:59:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:59:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:59:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:59:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:59:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:59:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:59:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:59:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:59:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:59:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:59:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:59:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:59:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:59:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:59:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:59:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-22 17:59:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-22 17:59:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 17:59:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 17:59:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 17:59:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-22 17:59:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 17:59:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-22 17:59:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-22 17:59:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-22 17:59:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-07-22 17:59:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-07-22 17:59:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-22 17:59:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-22 17:59:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-22 17:59:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-22 17:59:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-22 17:59:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-07-22 17:59:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-07-22 17:59:02,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:02,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242619177] [2022-07-22 17:59:02,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242619177] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:59:02,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785430382] [2022-07-22 17:59:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:02,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:02,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:02,804 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) [2022-07-22 17:59:02,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 17:59:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:03,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-22 17:59:03,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:59:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 472 proven. 213 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-07-22 17:59:03,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:59:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 104 proven. 189 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-07-22 17:59:04,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785430382] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:59:04,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:59:04,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 21] total 53 [2022-07-22 17:59:04,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831734340] [2022-07-22 17:59:04,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:59:04,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 17:59:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 17:59:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2545, Unknown=0, NotChecked=0, Total=2756 [2022-07-22 17:59:04,790 INFO L87 Difference]: Start difference. First operand 6935 states and 8505 transitions. Second operand has 53 states, 53 states have (on average 7.169811320754717) internal successors, (380), 46 states have internal predecessors, (380), 18 states have call successors, (78), 13 states have call predecessors, (78), 19 states have return successors, (80), 21 states have call predecessors, (80), 18 states have call successors, (80) [2022-07-22 17:59:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:28,900 INFO L93 Difference]: Finished difference Result 32742 states and 43314 transitions. [2022-07-22 17:59:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-07-22 17:59:28,901 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.169811320754717) internal successors, (380), 46 states have internal predecessors, (380), 18 states have call successors, (78), 13 states have call predecessors, (78), 19 states have return successors, (80), 21 states have call predecessors, (80), 18 states have call successors, (80) Word has length 393 [2022-07-22 17:59:28,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:28,957 INFO L225 Difference]: With dead ends: 32742 [2022-07-22 17:59:28,958 INFO L226 Difference]: Without dead ends: 26486 [2022-07-22 17:59:28,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14053 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3497, Invalid=39975, Unknown=0, NotChecked=0, Total=43472 [2022-07-22 17:59:28,970 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 3664 mSDsluCounter, 21788 mSDsCounter, 0 mSdLazyCounter, 22363 mSolverCounterSat, 2300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3682 SdHoareTripleChecker+Valid, 23038 SdHoareTripleChecker+Invalid, 24663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2300 IncrementalHoareTripleChecker+Valid, 22363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:28,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3682 Valid, 23038 Invalid, 24663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2300 Valid, 22363 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-07-22 17:59:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26486 states. [2022-07-22 17:59:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26486 to 6965. [2022-07-22 17:59:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 5449 states have (on average 1.2088456597540833) internal successors, (6587), 5549 states have internal predecessors, (6587), 983 states have call successors, (983), 532 states have call predecessors, (983), 532 states have return successors, (983), 883 states have call predecessors, (983), 983 states have call successors, (983) [2022-07-22 17:59:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 8553 transitions. [2022-07-22 17:59:30,570 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 8553 transitions. Word has length 393 [2022-07-22 17:59:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:30,570 INFO L495 AbstractCegarLoop]: Abstraction has 6965 states and 8553 transitions. [2022-07-22 17:59:30,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.169811320754717) internal successors, (380), 46 states have internal predecessors, (380), 18 states have call successors, (78), 13 states have call predecessors, (78), 19 states have return successors, (80), 21 states have call predecessors, (80), 18 states have call successors, (80) [2022-07-22 17:59:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 8553 transitions. [2022-07-22 17:59:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-07-22 17:59:30,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:30,580 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:30,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 17:59:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:30,799 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:30,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 456298907, now seen corresponding path program 1 times [2022-07-22 17:59:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:30,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484728542] [2022-07-22 17:59:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:59:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:59:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:59:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:59:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:59:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:59:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:59:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:59:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:59:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:59:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:59:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:59:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:59:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:59:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:59:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:59:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:59:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:59:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:59:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-22 17:59:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-22 17:59:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 17:59:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 17:59:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 17:59:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-22 17:59:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-22 17:59:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-22 17:59:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-22 17:59:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-22 17:59:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-22 17:59:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-22 17:59:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-22 17:59:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-22 17:59:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-07-22 17:59:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-07-22 17:59:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-07-22 17:59:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-22 17:59:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-22 17:59:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2022-07-22 17:59:30,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:30,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484728542] [2022-07-22 17:59:30,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484728542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:30,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:30,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:59:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886261483] [2022-07-22 17:59:30,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:59:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:59:30,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:59:30,909 INFO L87 Difference]: Start difference. First operand 6965 states and 8553 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-22 17:59:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:32,558 INFO L93 Difference]: Finished difference Result 13470 states and 16592 transitions. [2022-07-22 17:59:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:59:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 404 [2022-07-22 17:59:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:32,570 INFO L225 Difference]: With dead ends: 13470 [2022-07-22 17:59:32,570 INFO L226 Difference]: Without dead ends: 6995 [2022-07-22 17:59:32,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:59:32,584 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 278 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:32,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 457 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:59:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6995 states. [2022-07-22 17:59:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6995 to 6941. [2022-07-22 17:59:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6941 states, 5437 states have (on average 1.2070995034026117) internal successors, (6563), 5537 states have internal predecessors, (6563), 971 states have call successors, (971), 532 states have call predecessors, (971), 532 states have return successors, (971), 871 states have call predecessors, (971), 971 states have call successors, (971) [2022-07-22 17:59:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 8505 transitions. [2022-07-22 17:59:34,025 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 8505 transitions. Word has length 404 [2022-07-22 17:59:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:34,026 INFO L495 AbstractCegarLoop]: Abstraction has 6941 states and 8505 transitions. [2022-07-22 17:59:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-22 17:59:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 8505 transitions. [2022-07-22 17:59:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-07-22 17:59:34,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:34,035 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-22 17:59:34,035 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash -206911069, now seen corresponding path program 1 times [2022-07-22 17:59:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:34,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115465077] [2022-07-22 17:59:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:59:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:59:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:59:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:59:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:59:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:59:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:59:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:59:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:59:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:59:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:59:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:59:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:59:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:59:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:59:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:59:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 17:59:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 17:59:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 17:59:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:59:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-22 17:59:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 17:59:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 17:59:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 17:59:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-22 17:59:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-22 17:59:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-22 17:59:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-22 17:59:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-22 17:59:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-22 17:59:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-22 17:59:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-22 17:59:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-22 17:59:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-07-22 17:59:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-07-22 17:59:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-07-22 17:59:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-22 17:59:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-22 17:59:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 52 proven. 52 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-07-22 17:59:34,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:34,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115465077] [2022-07-22 17:59:34,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115465077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:59:34,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476857241] [2022-07-22 17:59:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:34,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:34,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:34,239 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) [2022-07-22 17:59:34,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 17:59:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:34,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-22 17:59:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:59:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 574 proven. 257 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-07-22 17:59:35,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:59:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 158 proven. 154 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2022-07-22 17:59:36,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476857241] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:59:36,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:59:36,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 21] total 56 [2022-07-22 17:59:36,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23616145] [2022-07-22 17:59:36,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-22 17:59:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-22 17:59:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2859, Unknown=0, NotChecked=0, Total=3080 [2022-07-22 17:59:36,406 INFO L87 Difference]: Start difference. First operand 6941 states and 8505 transitions. Second operand has 56 states, 56 states have (on average 7.642857142857143) internal successors, (428), 47 states have internal predecessors, (428), 16 states have call successors, (84), 11 states have call predecessors, (84), 25 states have return successors, (89), 24 states have call predecessors, (89), 16 states have call successors, (89) [2022-07-22 18:00:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:01,111 INFO L93 Difference]: Finished difference Result 44563 states and 58932 transitions. [2022-07-22 18:00:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-22 18:00:01,112 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.642857142857143) internal successors, (428), 47 states have internal predecessors, (428), 16 states have call successors, (84), 11 states have call predecessors, (84), 25 states have return successors, (89), 24 states have call predecessors, (89), 16 states have call successors, (89) Word has length 404 [2022-07-22 18:00:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:01,183 INFO L225 Difference]: With dead ends: 44563 [2022-07-22 18:00:01,183 INFO L226 Difference]: Without dead ends: 38307 [2022-07-22 18:00:01,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 886 SyntacticMatches, 2 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13399 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2847, Invalid=38973, Unknown=0, NotChecked=0, Total=41820 [2022-07-22 18:00:01,199 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 3619 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 15929 mSolverCounterSat, 1767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3653 SdHoareTripleChecker+Valid, 17825 SdHoareTripleChecker+Invalid, 18247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1767 IncrementalHoareTripleChecker+Valid, 15929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:01,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3653 Valid, 17825 Invalid, 18247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1767 Valid, 15929 Invalid, 0 Unknown, 551 Unchecked, 8.0s Time] [2022-07-22 18:00:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38307 states. [2022-07-22 18:00:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38307 to 11938. [2022-07-22 18:00:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11938 states, 9223 states have (on average 1.2094763092269327) internal successors, (11155), 9400 states have internal predecessors, (11155), 1796 states have call successors, (1796), 918 states have call predecessors, (1796), 918 states have return successors, (1796), 1619 states have call predecessors, (1796), 1796 states have call successors, (1796) [2022-07-22 18:00:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11938 states to 11938 states and 14747 transitions. [2022-07-22 18:00:04,143 INFO L78 Accepts]: Start accepts. Automaton has 11938 states and 14747 transitions. Word has length 404 [2022-07-22 18:00:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:04,144 INFO L495 AbstractCegarLoop]: Abstraction has 11938 states and 14747 transitions. [2022-07-22 18:00:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.642857142857143) internal successors, (428), 47 states have internal predecessors, (428), 16 states have call successors, (84), 11 states have call predecessors, (84), 25 states have return successors, (89), 24 states have call predecessors, (89), 16 states have call successors, (89) [2022-07-22 18:00:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11938 states and 14747 transitions. [2022-07-22 18:00:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-07-22 18:00:04,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:04,159 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:04,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 18:00:04,359 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,SelfDestructingSolverStorable49 [2022-07-22 18:00:04,360 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1636513250, now seen corresponding path program 1 times [2022-07-22 18:00:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371459797] [2022-07-22 18:00:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 18:00:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:00:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 18:00:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 18:00:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 18:00:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 18:00:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 18:00:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 18:00:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 18:00:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 18:00:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:00:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 18:00:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 18:00:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 18:00:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:00:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 18:00:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 18:00:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 18:00:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 18:00:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-22 18:00:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-22 18:00:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 18:00:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 18:00:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 18:00:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-22 18:00:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-22 18:00:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-22 18:00:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-22 18:00:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-07-22 18:00:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-22 18:00:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-22 18:00:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 18:00:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-22 18:00:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-07-22 18:00:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-07-22 18:00:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-22 18:00:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-22 18:00:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-22 18:00:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-07-22 18:00:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-07-22 18:00:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-07-22 18:00:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2022-07-22 18:00:04,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:04,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371459797] [2022-07-22 18:00:04,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371459797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:04,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:04,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:00:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472452991] [2022-07-22 18:00:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:04,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:00:04,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:00:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:00:04,491 INFO L87 Difference]: Start difference. First operand 11938 states and 14747 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-22 18:00:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:07,373 INFO L93 Difference]: Finished difference Result 23307 states and 28919 transitions. [2022-07-22 18:00:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:00:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 430 [2022-07-22 18:00:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:07,399 INFO L225 Difference]: With dead ends: 23307 [2022-07-22 18:00:07,399 INFO L226 Difference]: Without dead ends: 12011 [2022-07-22 18:00:07,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:00:07,414 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 277 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:07,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 456 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:00:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12011 states. [2022-07-22 18:00:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12011 to 12003. [2022-07-22 18:00:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12003 states, 9231 states have (on average 1.2092947676308092) internal successors, (11163), 9457 states have internal predecessors, (11163), 1853 states have call successors, (1853), 918 states have call predecessors, (1853), 918 states have return successors, (1853), 1627 states have call predecessors, (1853), 1853 states have call successors, (1853) [2022-07-22 18:00:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12003 states to 12003 states and 14869 transitions. [2022-07-22 18:00:10,151 INFO L78 Accepts]: Start accepts. Automaton has 12003 states and 14869 transitions. Word has length 430 [2022-07-22 18:00:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:10,151 INFO L495 AbstractCegarLoop]: Abstraction has 12003 states and 14869 transitions. [2022-07-22 18:00:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-22 18:00:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12003 states and 14869 transitions. [2022-07-22 18:00:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-07-22 18:00:10,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:10,169 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-22 18:00:10,169 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1638347616, now seen corresponding path program 1 times [2022-07-22 18:00:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397310862] [2022-07-22 18:00:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 18:00:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:00:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 18:00:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 18:00:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 18:00:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 18:00:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 18:00:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 18:00:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 18:00:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 18:00:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:00:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 18:00:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 18:00:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 18:00:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:00:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 18:00:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 18:00:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 18:00:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 18:00:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-22 18:00:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-22 18:00:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 18:00:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 18:00:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 18:00:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-22 18:00:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-22 18:00:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-22 18:00:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-22 18:00:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-07-22 18:00:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-22 18:00:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-22 18:00:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 18:00:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-22 18:00:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-07-22 18:00:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-07-22 18:00:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-22 18:00:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-22 18:00:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-22 18:00:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-07-22 18:00:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-07-22 18:00:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-07-22 18:00:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 37 proven. 34 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-07-22 18:00:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:10,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397310862] [2022-07-22 18:00:10,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397310862] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:00:10,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67418497] [2022-07-22 18:00:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:10,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:00:10,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:00:10,444 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) [2022-07-22 18:00:10,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 18:00:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:10,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 18:00:10,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:00:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 530 proven. 45 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-22 18:00:11,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:00:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2022-07-22 18:00:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67418497] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:00:11,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:00:11,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7, 8] total 32 [2022-07-22 18:00:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926132278] [2022-07-22 18:00:11,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:00:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 18:00:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 18:00:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2022-07-22 18:00:11,509 INFO L87 Difference]: Start difference. First operand 12003 states and 14869 transitions. Second operand has 32 states, 32 states have (on average 11.5625) internal successors, (370), 29 states have internal predecessors, (370), 16 states have call successors, (88), 6 states have call predecessors, (88), 6 states have return successors, (84), 18 states have call predecessors, (84), 16 states have call successors, (84) [2022-07-22 18:00:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:47,016 INFO L93 Difference]: Finished difference Result 52192 states and 68115 transitions. [2022-07-22 18:00:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2022-07-22 18:00:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.5625) internal successors, (370), 29 states have internal predecessors, (370), 16 states have call successors, (88), 6 states have call predecessors, (88), 6 states have return successors, (84), 18 states have call predecessors, (84), 16 states have call successors, (84) Word has length 430 [2022-07-22 18:00:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:47,121 INFO L225 Difference]: With dead ends: 52192 [2022-07-22 18:00:47,121 INFO L226 Difference]: Without dead ends: 41142 [2022-07-22 18:00:47,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1360 GetRequests, 989 SyntacticMatches, 0 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58050 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=9707, Invalid=129049, Unknown=0, NotChecked=0, Total=138756 [2022-07-22 18:00:47,149 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 5388 mSDsluCounter, 19716 mSDsCounter, 0 mSdLazyCounter, 28670 mSolverCounterSat, 4149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5410 SdHoareTripleChecker+Valid, 21208 SdHoareTripleChecker+Invalid, 32819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4149 IncrementalHoareTripleChecker+Valid, 28670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:47,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5410 Valid, 21208 Invalid, 32819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4149 Valid, 28670 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-07-22 18:00:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41142 states. [2022-07-22 18:00:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41142 to 14890. [2022-07-22 18:00:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 11465 states have (on average 1.2068905364151765) internal successors, (13837), 11739 states have internal predecessors, (13837), 2286 states have call successors, (2286), 1138 states have call predecessors, (2286), 1138 states have return successors, (2286), 2012 states have call predecessors, (2286), 2286 states have call successors, (2286) [2022-07-22 18:00:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 18409 transitions. [2022-07-22 18:00:51,281 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 18409 transitions. Word has length 430 [2022-07-22 18:00:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:51,281 INFO L495 AbstractCegarLoop]: Abstraction has 14890 states and 18409 transitions. [2022-07-22 18:00:51,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.5625) internal successors, (370), 29 states have internal predecessors, (370), 16 states have call successors, (88), 6 states have call predecessors, (88), 6 states have return successors, (84), 18 states have call predecessors, (84), 16 states have call successors, (84) [2022-07-22 18:00:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 18409 transitions. [2022-07-22 18:00:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-07-22 18:00:51,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:51,306 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:51,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-22 18:00:51,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:00:51,506 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1882206492, now seen corresponding path program 1 times [2022-07-22 18:00:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:51,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148307810] [2022-07-22 18:00:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:51,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 18:00:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:00:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 18:00:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 18:00:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 18:00:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 18:00:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 18:00:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 18:00:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 18:00:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 18:00:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:00:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 18:00:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 18:00:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 18:00:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:00:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 18:00:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 18:00:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 18:00:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 18:00:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-22 18:00:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-22 18:00:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 18:00:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-22 18:00:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 18:00:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-22 18:00:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-22 18:00:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-22 18:00:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-22 18:00:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-07-22 18:00:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-22 18:00:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-22 18:00:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-22 18:00:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-22 18:00:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-07-22 18:00:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-07-22 18:00:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-22 18:00:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-22 18:00:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-22 18:00:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-07-22 18:00:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-07-22 18:00:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-07-22 18:00:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-07-22 18:00:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148307810] [2022-07-22 18:00:51,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148307810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:00:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128380779] [2022-07-22 18:00:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:51,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:00:51,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:00:51,626 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) [2022-07-22 18:00:51,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 18:00:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:51,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 18:00:51,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:00:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 460 proven. 83 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2022-07-22 18:00:52,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:00:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 60 proven. 48 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2022-07-22 18:00:52,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128380779] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:00:52,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:00:52,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 10] total 26 [2022-07-22 18:00:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631283989] [2022-07-22 18:00:52,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:00:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 18:00:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 18:00:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-22 18:00:52,472 INFO L87 Difference]: Start difference. First operand 14890 states and 18409 transitions. Second operand has 26 states, 23 states have (on average 11.304347826086957) internal successors, (260), 23 states have internal predecessors, (260), 8 states have call successors, (63), 7 states have call predecessors, (63), 10 states have return successors, (61), 8 states have call predecessors, (61), 8 states have call successors, (61)