./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/eca-rers2012/Problem17_label36.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 e535ec383f9537274a1ea0de6d7103e6fd6013fb76f91148f8797ca645095af2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:42:19,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:42:19,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:42:19,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:42:19,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:42:19,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:42:19,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:42:19,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:42:19,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:42:19,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:42:19,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:42:19,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:42:19,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:42:19,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:42:19,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:42:19,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:42:19,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:42:19,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:42:19,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:42:19,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:42:19,903 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:42:19,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:42:19,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:42:19,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:42:19,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:42:19,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:42:19,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:42:19,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:42:19,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:42:19,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:42:19,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:42:19,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:42:19,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:42:19,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:42:19,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:42:19,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:42:19,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:42:19,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:42:19,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:42:19,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:42:19,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:42:19,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:42:19,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:42:19,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:42:19,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:42:19,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:42:19,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:42:19,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:42:19,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:42:19,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:42:19,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:42:19,968 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:42:19,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:42:19,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:42:19,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:42:19,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:42:19,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:42:19,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:42:19,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:42:19,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:42:19,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:42:19,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:42:19,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:42:19,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:42:19,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:42:19,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:42:19,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:42:19,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:42:19,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:42:19,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:42:19,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:42:19,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:42:19,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:42:19,975 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:42:19,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:42:19,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:42:19,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e535ec383f9537274a1ea0de6d7103e6fd6013fb76f91148f8797ca645095af2 [2022-07-19 12:42:20,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:42:20,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:42:20,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:42:20,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:42:20,254 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:42:20,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label36.c [2022-07-19 12:42:20,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f819f6774/295cf552f78f4b96a15657ef8e3fde14/FLAG08ac03747 [2022-07-19 12:42:20,971 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:42:20,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label36.c [2022-07-19 12:42:20,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f819f6774/295cf552f78f4b96a15657ef8e3fde14/FLAG08ac03747 [2022-07-19 12:42:21,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f819f6774/295cf552f78f4b96a15657ef8e3fde14 [2022-07-19 12:42:21,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:42:21,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:42:21,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:42:21,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:42:21,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:42:21,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:42:21" (1/1) ... [2022-07-19 12:42:21,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df799fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:21, skipping insertion in model container [2022-07-19 12:42:21,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:42:21" (1/1) ... [2022-07-19 12:42:21,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:42:21,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:42:21,478 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/eca-rers2012/Problem17_label36.c[8418,8431] [2022-07-19 12:42:21,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:42:21,972 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:42:22,005 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/eca-rers2012/Problem17_label36.c[8418,8431] [2022-07-19 12:42:22,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:42:22,256 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:42:22,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22 WrapperNode [2022-07-19 12:42:22,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:42:22,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:42:22,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:42:22,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:42:22,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,607 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-19 12:42:22,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:42:22,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:42:22,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:42:22,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:42:22,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:22,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:23,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:23,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:42:23,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:42:23,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:42:23,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:42:23,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (1/1) ... [2022-07-19 12:42:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:42:23,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:42:23,248 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) [2022-07-19 12:42:23,250 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 [2022-07-19 12:42:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:42:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:42:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:42:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:42:23,359 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:42:23,361 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:42:26,310 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:42:26,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:42:26,327 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:42:26,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:42:26 BoogieIcfgContainer [2022-07-19 12:42:26,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:42:26,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:42:26,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:42:26,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:42:26,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:42:21" (1/3) ... [2022-07-19 12:42:26,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f585c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:42:26, skipping insertion in model container [2022-07-19 12:42:26,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:42:22" (2/3) ... [2022-07-19 12:42:26,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f585c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:42:26, skipping insertion in model container [2022-07-19 12:42:26,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:42:26" (3/3) ... [2022-07-19 12:42:26,338 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label36.c [2022-07-19 12:42:26,351 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:42:26,351 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:42:26,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:42:26,432 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@73744121, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d4d1130 [2022-07-19 12:42:26,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:42:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 12:42:26,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:26,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:26,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2022-07-19 12:42:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:26,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412839415] [2022-07-19 12:42:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:26,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:42:26,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412839415] [2022-07-19 12:42:26,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412839415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:26,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:26,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:42:26,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571849273] [2022-07-19 12:42:26,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:26,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:26,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:26,725 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:29,319 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-07-19 12:42:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-19 12:42:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:29,339 INFO L225 Difference]: With dead ends: 1644 [2022-07-19 12:42:29,339 INFO L226 Difference]: Without dead ends: 977 [2022-07-19 12:42:29,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:29,347 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 431 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:29,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:42:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-07-19 12:42:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-07-19 12:42:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-07-19 12:42:29,422 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 57 [2022-07-19 12:42:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:29,422 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-07-19 12:42:29,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-07-19 12:42:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 12:42:29,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:29,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:42:29,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:42:29,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1310259198, now seen corresponding path program 1 times [2022-07-19 12:42:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126582791] [2022-07-19 12:42:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:42:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:29,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126582791] [2022-07-19 12:42:29,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126582791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:29,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:29,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:42:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514655834] [2022-07-19 12:42:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:29,627 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:32,042 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2022-07-19 12:42:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-19 12:42:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:32,054 INFO L225 Difference]: With dead ends: 2813 [2022-07-19 12:42:32,054 INFO L226 Difference]: Without dead ends: 1844 [2022-07-19 12:42:32,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:32,057 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:32,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:42:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-19 12:42:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2022-07-19 12:42:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2022-07-19 12:42:32,101 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 124 [2022-07-19 12:42:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:32,102 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2022-07-19 12:42:32,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2022-07-19 12:42:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 12:42:32,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:32,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:42:32,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:42:32,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -414134388, now seen corresponding path program 1 times [2022-07-19 12:42:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:32,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255242425] [2022-07-19 12:42:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:32,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:42:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255242425] [2022-07-19 12:42:32,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255242425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:32,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:32,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137061794] [2022-07-19 12:42:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:32,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:32,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:32,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:32,224 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:34,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:34,352 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2022-07-19 12:42:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:34,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-07-19 12:42:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:34,364 INFO L225 Difference]: With dead ends: 4552 [2022-07-19 12:42:34,364 INFO L226 Difference]: Without dead ends: 2713 [2022-07-19 12:42:34,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:34,369 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 450 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:34,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 12:42:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-07-19 12:42:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-07-19 12:42:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2022-07-19 12:42:34,420 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 127 [2022-07-19 12:42:34,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:34,421 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2022-07-19 12:42:34,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2022-07-19 12:42:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-19 12:42:34,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:34,425 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:34,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:42:34,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1893803468, now seen corresponding path program 1 times [2022-07-19 12:42:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:34,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194538174] [2022-07-19 12:42:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-19 12:42:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:34,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194538174] [2022-07-19 12:42:34,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194538174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:34,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:34,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:42:34,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056971790] [2022-07-19 12:42:34,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:34,598 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:36,293 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2022-07-19 12:42:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:36,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2022-07-19 12:42:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:36,306 INFO L225 Difference]: With dead ends: 7984 [2022-07-19 12:42:36,307 INFO L226 Difference]: Without dead ends: 4421 [2022-07-19 12:42:36,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:36,312 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:36,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:42:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-07-19 12:42:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2022-07-19 12:42:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2022-07-19 12:42:36,370 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 196 [2022-07-19 12:42:36,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:36,372 INFO L495 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2022-07-19 12:42:36,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2022-07-19 12:42:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-19 12:42:36,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:36,378 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:36,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:42:36,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:36,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 404661206, now seen corresponding path program 1 times [2022-07-19 12:42:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:36,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714468924] [2022-07-19 12:42:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:36,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:42:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:36,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714468924] [2022-07-19 12:42:36,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714468924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:36,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:36,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:36,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552778785] [2022-07-19 12:42:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:36,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:36,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:36,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:36,596 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:38,106 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2022-07-19 12:42:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2022-07-19 12:42:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:38,130 INFO L225 Difference]: With dead ends: 9273 [2022-07-19 12:42:38,130 INFO L226 Difference]: Without dead ends: 5704 [2022-07-19 12:42:38,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:38,137 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:38,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:42:38,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-07-19 12:42:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2022-07-19 12:42:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2022-07-19 12:42:38,232 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 209 [2022-07-19 12:42:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:38,233 INFO L495 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2022-07-19 12:42:38,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2022-07-19 12:42:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-19 12:42:38,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:38,236 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:38,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:42:38,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1429028283, now seen corresponding path program 1 times [2022-07-19 12:42:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485371707] [2022-07-19 12:42:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-19 12:42:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485371707] [2022-07-19 12:42:38,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485371707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:38,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:38,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572982520] [2022-07-19 12:42:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:38,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:38,348 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:40,175 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2022-07-19 12:42:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:40,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2022-07-19 12:42:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:40,198 INFO L225 Difference]: With dead ends: 14376 [2022-07-19 12:42:40,199 INFO L226 Difference]: Without dead ends: 8673 [2022-07-19 12:42:40,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:40,206 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 394 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:40,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 12:42:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2022-07-19 12:42:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2022-07-19 12:42:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2022-07-19 12:42:40,308 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 211 [2022-07-19 12:42:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:40,309 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2022-07-19 12:42:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2022-07-19 12:42:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-07-19 12:42:40,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:40,313 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:40,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:42:40,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:40,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1477295961, now seen corresponding path program 1 times [2022-07-19 12:42:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:40,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82854612] [2022-07-19 12:42:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-19 12:42:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:40,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82854612] [2022-07-19 12:42:40,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82854612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:40,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:40,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276041470] [2022-07-19 12:42:40,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:40,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:40,498 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:42,255 INFO L93 Difference]: Finished difference Result 14315 states and 16680 transitions. [2022-07-19 12:42:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2022-07-19 12:42:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:42,277 INFO L225 Difference]: With dead ends: 14315 [2022-07-19 12:42:42,278 INFO L226 Difference]: Without dead ends: 7790 [2022-07-19 12:42:42,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:42,286 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:42,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 12:42:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2022-07-19 12:42:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2022-07-19 12:42:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7789 states have (on average 1.1186288355372962) internal successors, (8713), 7789 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 8713 transitions. [2022-07-19 12:42:42,466 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 8713 transitions. Word has length 289 [2022-07-19 12:42:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:42,467 INFO L495 AbstractCegarLoop]: Abstraction has 7790 states and 8713 transitions. [2022-07-19 12:42:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 8713 transitions. [2022-07-19 12:42:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-07-19 12:42:42,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:42,473 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 12:42:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:42:42,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:42,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1694862260, now seen corresponding path program 1 times [2022-07-19 12:42:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:42,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131279022] [2022-07-19 12:42:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-19 12:42:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:42,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131279022] [2022-07-19 12:42:42,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131279022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:42,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:42,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247516371] [2022-07-19 12:42:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:42,626 INFO L87 Difference]: Start difference. First operand 7790 states and 8713 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:44,425 INFO L93 Difference]: Finished difference Result 18559 states and 20913 transitions. [2022-07-19 12:42:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2022-07-19 12:42:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:44,453 INFO L225 Difference]: With dead ends: 18559 [2022-07-19 12:42:44,453 INFO L226 Difference]: Without dead ends: 10771 [2022-07-19 12:42:44,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:44,463 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 415 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:44,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 402 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 12:42:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2022-07-19 12:42:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9916. [2022-07-19 12:42:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.119415027735754) internal successors, (11099), 9915 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 11099 transitions. [2022-07-19 12:42:44,612 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 11099 transitions. Word has length 329 [2022-07-19 12:42:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:44,613 INFO L495 AbstractCegarLoop]: Abstraction has 9916 states and 11099 transitions. [2022-07-19 12:42:44,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 11099 transitions. [2022-07-19 12:42:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-19 12:42:44,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:44,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:44,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:42:44,624 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:44,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash -489961180, now seen corresponding path program 1 times [2022-07-19 12:42:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:44,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11025400] [2022-07-19 12:42:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:42:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:44,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11025400] [2022-07-19 12:42:44,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11025400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:44,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:44,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479486896] [2022-07-19 12:42:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:44,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:42:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:42:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:42:44,867 INFO L87 Difference]: Start difference. First operand 9916 states and 11099 transitions. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:47,301 INFO L93 Difference]: Finished difference Result 26239 states and 29414 transitions. [2022-07-19 12:42:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:42:47,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 396 [2022-07-19 12:42:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:47,330 INFO L225 Difference]: With dead ends: 26239 [2022-07-19 12:42:47,330 INFO L226 Difference]: Without dead ends: 15900 [2022-07-19 12:42:47,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:42:47,342 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 619 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:47,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 209 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:42:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-07-19 12:42:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 15898. [2022-07-19 12:42:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 15897 states have (on average 1.1247405170786942) internal successors, (17880), 15897 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 17880 transitions. [2022-07-19 12:42:47,621 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 17880 transitions. Word has length 396 [2022-07-19 12:42:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:47,625 INFO L495 AbstractCegarLoop]: Abstraction has 15898 states and 17880 transitions. [2022-07-19 12:42:47,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 17880 transitions. [2022-07-19 12:42:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-07-19 12:42:47,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:47,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:42:47,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:42:47,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash -373545227, now seen corresponding path program 1 times [2022-07-19 12:42:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286502959] [2022-07-19 12:42:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:47,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-19 12:42:47,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:47,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286502959] [2022-07-19 12:42:47,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286502959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:47,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:47,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:47,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467983486] [2022-07-19 12:42:47,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:47,830 INFO L87 Difference]: Start difference. First operand 15898 states and 17880 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:49,623 INFO L93 Difference]: Finished difference Result 44148 states and 49784 transitions. [2022-07-19 12:42:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:49,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2022-07-19 12:42:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:49,668 INFO L225 Difference]: With dead ends: 44148 [2022-07-19 12:42:49,668 INFO L226 Difference]: Without dead ends: 28252 [2022-07-19 12:42:49,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:49,687 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 497 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:49,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 287 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:42:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2022-07-19 12:42:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 27809. [2022-07-19 12:42:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27809 states, 27808 states have (on average 1.1171605293440736) internal successors, (31066), 27808 states have internal predecessors, (31066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27809 states to 27809 states and 31066 transitions. [2022-07-19 12:42:50,113 INFO L78 Accepts]: Start accepts. Automaton has 27809 states and 31066 transitions. Word has length 430 [2022-07-19 12:42:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:50,113 INFO L495 AbstractCegarLoop]: Abstraction has 27809 states and 31066 transitions. [2022-07-19 12:42:50,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 27809 states and 31066 transitions. [2022-07-19 12:42:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-07-19 12:42:50,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:50,131 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:42:50,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2095476194, now seen corresponding path program 1 times [2022-07-19 12:42:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:50,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230154753] [2022-07-19 12:42:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 12:42:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230154753] [2022-07-19 12:42:50,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230154753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:50,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:50,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574624851] [2022-07-19 12:42:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:50,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:50,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:50,322 INFO L87 Difference]: Start difference. First operand 27809 states and 31066 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:52,107 INFO L93 Difference]: Finished difference Result 62014 states and 69501 transitions. [2022-07-19 12:42:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:52,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 443 [2022-07-19 12:42:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:52,157 INFO L225 Difference]: With dead ends: 62014 [2022-07-19 12:42:52,157 INFO L226 Difference]: Without dead ends: 32502 [2022-07-19 12:42:52,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:52,180 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 415 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:52,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 842 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:42:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32502 states. [2022-07-19 12:42:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32502 to 32496. [2022-07-19 12:42:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32496 states, 32495 states have (on average 1.1129404523772888) internal successors, (36165), 32495 states have internal predecessors, (36165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32496 states to 32496 states and 36165 transitions. [2022-07-19 12:42:52,595 INFO L78 Accepts]: Start accepts. Automaton has 32496 states and 36165 transitions. Word has length 443 [2022-07-19 12:42:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:52,595 INFO L495 AbstractCegarLoop]: Abstraction has 32496 states and 36165 transitions. [2022-07-19 12:42:52,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 32496 states and 36165 transitions. [2022-07-19 12:42:52,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-19 12:42:52,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:52,614 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:42:52,615 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1480950765, now seen corresponding path program 1 times [2022-07-19 12:42:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:52,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859920683] [2022-07-19 12:42:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-19 12:42:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:52,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859920683] [2022-07-19 12:42:52,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859920683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:52,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:52,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:52,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266844110] [2022-07-19 12:42:52,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:52,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:52,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:52,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:52,913 INFO L87 Difference]: Start difference. First operand 32496 states and 36165 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:54,794 INFO L93 Difference]: Finished difference Result 77801 states and 86693 transitions. [2022-07-19 12:42:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:42:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2022-07-19 12:42:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:54,847 INFO L225 Difference]: With dead ends: 77801 [2022-07-19 12:42:54,847 INFO L226 Difference]: Without dead ends: 45307 [2022-07-19 12:42:54,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:54,874 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 447 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:54,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 754 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:42:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45307 states. [2022-07-19 12:42:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45307 to 43580. [2022-07-19 12:42:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43580 states, 43579 states have (on average 1.1083319947681223) internal successors, (48300), 43579 states have internal predecessors, (48300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43580 states to 43580 states and 48300 transitions. [2022-07-19 12:42:55,534 INFO L78 Accepts]: Start accepts. Automaton has 43580 states and 48300 transitions. Word has length 492 [2022-07-19 12:42:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:55,535 INFO L495 AbstractCegarLoop]: Abstraction has 43580 states and 48300 transitions. [2022-07-19 12:42:55,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 43580 states and 48300 transitions. [2022-07-19 12:42:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-07-19 12:42:55,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:55,560 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 12:42:55,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1119114681, now seen corresponding path program 1 times [2022-07-19 12:42:55,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:55,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899839674] [2022-07-19 12:42:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 12:42:55,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:55,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899839674] [2022-07-19 12:42:55,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899839674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:55,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:55,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:42:55,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359732771] [2022-07-19 12:42:55,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:55,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:42:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:42:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:42:55,930 INFO L87 Difference]: Start difference. First operand 43580 states and 48300 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:42:58,297 INFO L93 Difference]: Finished difference Result 100819 states and 111452 transitions. [2022-07-19 12:42:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:42:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 500 [2022-07-19 12:42:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:42:58,381 INFO L225 Difference]: With dead ends: 100819 [2022-07-19 12:42:58,381 INFO L226 Difference]: Without dead ends: 57229 [2022-07-19 12:42:58,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:42:58,411 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 922 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:42:58,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 165 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 12:42:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57229 states. [2022-07-19 12:42:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57229 to 57182. [2022-07-19 12:42:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57182 states, 57181 states have (on average 1.1003829943512706) internal successors, (62921), 57181 states have internal predecessors, (62921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57182 states to 57182 states and 62921 transitions. [2022-07-19 12:42:59,304 INFO L78 Accepts]: Start accepts. Automaton has 57182 states and 62921 transitions. Word has length 500 [2022-07-19 12:42:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:42:59,305 INFO L495 AbstractCegarLoop]: Abstraction has 57182 states and 62921 transitions. [2022-07-19 12:42:59,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:42:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 57182 states and 62921 transitions. [2022-07-19 12:42:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-07-19 12:42:59,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:42:59,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:42:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 12:42:59,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:42:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:42:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -888132232, now seen corresponding path program 1 times [2022-07-19 12:42:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:42:59,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023677006] [2022-07-19 12:42:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:42:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:42:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:42:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-19 12:42:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:42:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023677006] [2022-07-19 12:42:59,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023677006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:42:59,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:42:59,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:42:59,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661558784] [2022-07-19 12:42:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:42:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:42:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:42:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:42:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:42:59,619 INFO L87 Difference]: Start difference. First operand 57182 states and 62921 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:01,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:01,482 INFO L93 Difference]: Finished difference Result 114356 states and 125834 transitions. [2022-07-19 12:43:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:43:01,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 524 [2022-07-19 12:43:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:01,544 INFO L225 Difference]: With dead ends: 114356 [2022-07-19 12:43:01,544 INFO L226 Difference]: Without dead ends: 57176 [2022-07-19 12:43:01,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:01,580 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 569 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:01,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 568 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 12:43:01,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57176 states. [2022-07-19 12:43:02,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57176 to 57175. [2022-07-19 12:43:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57175 states, 57174 states have (on average 1.09967817539441) internal successors, (62873), 57174 states have internal predecessors, (62873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57175 states to 57175 states and 62873 transitions. [2022-07-19 12:43:02,429 INFO L78 Accepts]: Start accepts. Automaton has 57175 states and 62873 transitions. Word has length 524 [2022-07-19 12:43:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:02,429 INFO L495 AbstractCegarLoop]: Abstraction has 57175 states and 62873 transitions. [2022-07-19 12:43:02,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 57175 states and 62873 transitions. [2022-07-19 12:43:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-07-19 12:43:02,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:02,453 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:43:02,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 12:43:02,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:02,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:02,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1264307616, now seen corresponding path program 1 times [2022-07-19 12:43:02,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:02,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14897245] [2022-07-19 12:43:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:02,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 377 proven. 82 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 12:43:02,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14897245] [2022-07-19 12:43:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14897245] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:43:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954809061] [2022-07-19 12:43:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:02,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:43:02,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:43:02,677 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) [2022-07-19 12:43:02,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:43:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:02,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 12:43:02,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:43:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 350 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:43:04,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 12:43:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 514 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:43:04,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954809061] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 12:43:04,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 12:43:04,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2022-07-19 12:43:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680541203] [2022-07-19 12:43:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:04,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:43:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:43:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:43:04,798 INFO L87 Difference]: Start difference. First operand 57175 states and 62873 transitions. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:08,855 INFO L93 Difference]: Finished difference Result 162878 states and 179662 transitions. [2022-07-19 12:43:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:43:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2022-07-19 12:43:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:08,982 INFO L225 Difference]: With dead ends: 162878 [2022-07-19 12:43:08,983 INFO L226 Difference]: Without dead ends: 101015 [2022-07-19 12:43:09,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1155 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:43:09,027 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1550 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 1214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1214 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:09,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 198 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1214 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 12:43:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101015 states. [2022-07-19 12:43:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101015 to 80565. [2022-07-19 12:43:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80565 states, 80564 states have (on average 1.091728315376595) internal successors, (87954), 80564 states have internal predecessors, (87954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80565 states to 80565 states and 87954 transitions. [2022-07-19 12:43:10,413 INFO L78 Accepts]: Start accepts. Automaton has 80565 states and 87954 transitions. Word has length 581 [2022-07-19 12:43:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:10,414 INFO L495 AbstractCegarLoop]: Abstraction has 80565 states and 87954 transitions. [2022-07-19 12:43:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 80565 states and 87954 transitions. [2022-07-19 12:43:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-07-19 12:43:10,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:10,433 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:10,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 12:43:10,642 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,SelfDestructingSolverStorable14 [2022-07-19 12:43:10,643 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1974334424, now seen corresponding path program 1 times [2022-07-19 12:43:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:10,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638737195] [2022-07-19 12:43:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-19 12:43:10,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:10,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638737195] [2022-07-19 12:43:10,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638737195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:10,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:10,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:43:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968283725] [2022-07-19 12:43:10,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:10,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:43:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:43:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:10,999 INFO L87 Difference]: Start difference. First operand 80565 states and 87954 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:12,855 INFO L93 Difference]: Finished difference Result 158096 states and 172458 transitions. [2022-07-19 12:43:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:43:12,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2022-07-19 12:43:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:12,942 INFO L225 Difference]: With dead ends: 158096 [2022-07-19 12:43:12,942 INFO L226 Difference]: Without dead ends: 74130 [2022-07-19 12:43:12,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:12,979 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 492 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:12,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 621 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 12:43:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74130 states. [2022-07-19 12:43:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74130 to 72422. [2022-07-19 12:43:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72422 states, 72421 states have (on average 1.079949186009583) internal successors, (78211), 72421 states have internal predecessors, (78211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72422 states to 72422 states and 78211 transitions. [2022-07-19 12:43:13,956 INFO L78 Accepts]: Start accepts. Automaton has 72422 states and 78211 transitions. Word has length 600 [2022-07-19 12:43:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:13,956 INFO L495 AbstractCegarLoop]: Abstraction has 72422 states and 78211 transitions. [2022-07-19 12:43:13,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 72422 states and 78211 transitions. [2022-07-19 12:43:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-07-19 12:43:13,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:13,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:43:13,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 12:43:13,992 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 93113125, now seen corresponding path program 1 times [2022-07-19 12:43:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:13,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273725630] [2022-07-19 12:43:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-19 12:43:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:14,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273725630] [2022-07-19 12:43:14,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273725630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:14,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:14,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:43:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492409723] [2022-07-19 12:43:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:43:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:43:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:14,561 INFO L87 Difference]: Start difference. First operand 72422 states and 78211 transitions. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:16,918 INFO L93 Difference]: Finished difference Result 157205 states and 169759 transitions. [2022-07-19 12:43:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:43:16,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 718 [2022-07-19 12:43:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:17,023 INFO L225 Difference]: With dead ends: 157205 [2022-07-19 12:43:17,023 INFO L226 Difference]: Without dead ends: 84780 [2022-07-19 12:43:17,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:17,065 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 542 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:17,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 101 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 12:43:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84780 states. [2022-07-19 12:43:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84780 to 68597. [2022-07-19 12:43:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68597 states, 68596 states have (on average 1.0808939296751998) internal successors, (74145), 68596 states have internal predecessors, (74145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68597 states to 68597 states and 74145 transitions. [2022-07-19 12:43:18,115 INFO L78 Accepts]: Start accepts. Automaton has 68597 states and 74145 transitions. Word has length 718 [2022-07-19 12:43:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 68597 states and 74145 transitions. [2022-07-19 12:43:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 68597 states and 74145 transitions. [2022-07-19 12:43:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2022-07-19 12:43:18,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:18,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:43:18,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 12:43:18,162 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1091659666, now seen corresponding path program 1 times [2022-07-19 12:43:18,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:18,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540032960] [2022-07-19 12:43:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-19 12:43:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540032960] [2022-07-19 12:43:18,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540032960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:18,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:18,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:43:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120280692] [2022-07-19 12:43:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:18,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:43:18,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:43:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:18,745 INFO L87 Difference]: Start difference. First operand 68597 states and 74145 transitions. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:20,984 INFO L93 Difference]: Finished difference Result 77976 states and 84107 transitions. [2022-07-19 12:43:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:43:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 740 [2022-07-19 12:43:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:21,072 INFO L225 Difference]: With dead ends: 77976 [2022-07-19 12:43:21,072 INFO L226 Difference]: Without dead ends: 77544 [2022-07-19 12:43:21,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:21,086 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 877 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:21,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 95 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 12:43:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77544 states. [2022-07-19 12:43:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77544 to 69447. [2022-07-19 12:43:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69447 states, 69446 states have (on average 1.0818189672551335) internal successors, (75128), 69446 states have internal predecessors, (75128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69447 states to 69447 states and 75128 transitions. [2022-07-19 12:43:21,886 INFO L78 Accepts]: Start accepts. Automaton has 69447 states and 75128 transitions. Word has length 740 [2022-07-19 12:43:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:21,887 INFO L495 AbstractCegarLoop]: Abstraction has 69447 states and 75128 transitions. [2022-07-19 12:43:21,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 69447 states and 75128 transitions. [2022-07-19 12:43:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2022-07-19 12:43:21,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:21,919 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 12:43:21,919 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1578827968, now seen corresponding path program 1 times [2022-07-19 12:43:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730800021] [2022-07-19 12:43:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-07-19 12:43:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730800021] [2022-07-19 12:43:22,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730800021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:22,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:22,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:43:22,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072937203] [2022-07-19 12:43:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:22,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:43:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:43:22,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:22,432 INFO L87 Difference]: Start difference. First operand 69447 states and 75128 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:24,405 INFO L93 Difference]: Finished difference Result 142291 states and 153834 transitions. [2022-07-19 12:43:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:43:24,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 785 [2022-07-19 12:43:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:24,489 INFO L225 Difference]: With dead ends: 142291 [2022-07-19 12:43:24,490 INFO L226 Difference]: Without dead ends: 72846 [2022-07-19 12:43:24,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:24,508 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 440 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:24,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 315 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 12:43:24,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72846 states. [2022-07-19 12:43:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72846 to 67738. [2022-07-19 12:43:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67738 states, 67737 states have (on average 1.0806353986742843) internal successors, (73199), 67737 states have internal predecessors, (73199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67738 states to 67738 states and 73199 transitions. [2022-07-19 12:43:25,338 INFO L78 Accepts]: Start accepts. Automaton has 67738 states and 73199 transitions. Word has length 785 [2022-07-19 12:43:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:25,338 INFO L495 AbstractCegarLoop]: Abstraction has 67738 states and 73199 transitions. [2022-07-19 12:43:25,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 67738 states and 73199 transitions. [2022-07-19 12:43:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2022-07-19 12:43:25,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:25,369 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 12:43:25,369 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1640878233, now seen corresponding path program 1 times [2022-07-19 12:43:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:25,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802918212] [2022-07-19 12:43:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2022-07-19 12:43:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:25,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802918212] [2022-07-19 12:43:25,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802918212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:25,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:25,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:43:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073238134] [2022-07-19 12:43:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:25,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:43:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:43:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:25,628 INFO L87 Difference]: Start difference. First operand 67738 states and 73199 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:27,379 INFO L93 Difference]: Finished difference Result 138020 states and 148930 transitions. [2022-07-19 12:43:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:43:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 791 [2022-07-19 12:43:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:27,471 INFO L225 Difference]: With dead ends: 138020 [2022-07-19 12:43:27,471 INFO L226 Difference]: Without dead ends: 67309 [2022-07-19 12:43:27,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:27,518 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 440 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:27,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 724 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 12:43:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67309 states. [2022-07-19 12:43:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67309 to 65606. [2022-07-19 12:43:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65606 states, 65605 states have (on average 1.0733480679826233) internal successors, (70417), 65605 states have internal predecessors, (70417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65606 states to 65606 states and 70417 transitions. [2022-07-19 12:43:28,514 INFO L78 Accepts]: Start accepts. Automaton has 65606 states and 70417 transitions. Word has length 791 [2022-07-19 12:43:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 65606 states and 70417 transitions. [2022-07-19 12:43:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 65606 states and 70417 transitions. [2022-07-19 12:43:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2022-07-19 12:43:28,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:28,564 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:28,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 12:43:28,565 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash -92910983, now seen corresponding path program 1 times [2022-07-19 12:43:28,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:28,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175380926] [2022-07-19 12:43:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:28,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 938 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2022-07-19 12:43:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:29,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175380926] [2022-07-19 12:43:29,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175380926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:29,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:43:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370216274] [2022-07-19 12:43:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:29,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:43:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:43:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:29,213 INFO L87 Difference]: Start difference. First operand 65606 states and 70417 transitions. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:30,954 INFO L93 Difference]: Finished difference Result 131210 states and 140832 transitions. [2022-07-19 12:43:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:43:30,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1003 [2022-07-19 12:43:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:31,041 INFO L225 Difference]: With dead ends: 131210 [2022-07-19 12:43:31,041 INFO L226 Difference]: Without dead ends: 65606 [2022-07-19 12:43:31,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:31,064 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 119 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:31,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 228 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 12:43:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65606 states. [2022-07-19 12:43:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65606 to 63904. [2022-07-19 12:43:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63904 states, 63903 states have (on average 1.0629078447021267) internal successors, (67923), 63903 states have internal predecessors, (67923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63904 states to 63904 states and 67923 transitions. [2022-07-19 12:43:31,875 INFO L78 Accepts]: Start accepts. Automaton has 63904 states and 67923 transitions. Word has length 1003 [2022-07-19 12:43:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:31,876 INFO L495 AbstractCegarLoop]: Abstraction has 63904 states and 67923 transitions. [2022-07-19 12:43:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 63904 states and 67923 transitions. [2022-07-19 12:43:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2022-07-19 12:43:31,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:31,918 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:43:31,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 12:43:31,918 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1136863270, now seen corresponding path program 1 times [2022-07-19 12:43:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:31,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210452805] [2022-07-19 12:43:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 906 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-07-19 12:43:32,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210452805] [2022-07-19 12:43:32,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210452805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:32,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:32,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:43:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146582476] [2022-07-19 12:43:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:43:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:43:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:43:32,331 INFO L87 Difference]: Start difference. First operand 63904 states and 67923 transitions. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:35,321 INFO L93 Difference]: Finished difference Result 145277 states and 154031 transitions. [2022-07-19 12:43:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:43:35,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1013 [2022-07-19 12:43:35,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:35,427 INFO L225 Difference]: With dead ends: 145277 [2022-07-19 12:43:35,427 INFO L226 Difference]: Without dead ends: 79248 [2022-07-19 12:43:35,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:43:35,478 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 588 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:35,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 108 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:43:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79248 states. [2022-07-19 12:43:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79248 to 66884. [2022-07-19 12:43:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66884 states, 66883 states have (on average 1.061764573957508) internal successors, (71014), 66883 states have internal predecessors, (71014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66884 states to 66884 states and 71014 transitions. [2022-07-19 12:43:36,405 INFO L78 Accepts]: Start accepts. Automaton has 66884 states and 71014 transitions. Word has length 1013 [2022-07-19 12:43:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:36,406 INFO L495 AbstractCegarLoop]: Abstraction has 66884 states and 71014 transitions. [2022-07-19 12:43:36,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 66884 states and 71014 transitions. [2022-07-19 12:43:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2022-07-19 12:43:36,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:36,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:43:36,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 12:43:36,446 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:36,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:36,447 INFO L85 PathProgramCache]: Analyzing trace with hash -251649319, now seen corresponding path program 1 times [2022-07-19 12:43:36,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:36,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849015257] [2022-07-19 12:43:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:36,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-07-19 12:43:37,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:37,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849015257] [2022-07-19 12:43:37,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849015257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:37,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:37,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:43:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863014239] [2022-07-19 12:43:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:37,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:43:37,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:43:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:43:37,109 INFO L87 Difference]: Start difference. First operand 66884 states and 71014 transitions. Second operand has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:40,266 INFO L93 Difference]: Finished difference Result 130335 states and 138439 transitions. [2022-07-19 12:43:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:43:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1015 [2022-07-19 12:43:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:40,339 INFO L225 Difference]: With dead ends: 130335 [2022-07-19 12:43:40,339 INFO L226 Difference]: Without dead ends: 62601 [2022-07-19 12:43:40,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:40,362 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 564 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 3926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:40,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 595 Invalid, 3926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 3499 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:43:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62601 states. [2022-07-19 12:43:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62601 to 58344. [2022-07-19 12:43:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58344 states, 58343 states have (on average 1.058516017345697) internal successors, (61757), 58343 states have internal predecessors, (61757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58344 states to 58344 states and 61757 transitions. [2022-07-19 12:43:41,162 INFO L78 Accepts]: Start accepts. Automaton has 58344 states and 61757 transitions. Word has length 1015 [2022-07-19 12:43:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:41,163 INFO L495 AbstractCegarLoop]: Abstraction has 58344 states and 61757 transitions. [2022-07-19 12:43:41,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 58344 states and 61757 transitions. [2022-07-19 12:43:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2022-07-19 12:43:41,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:41,224 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 12:43:41,224 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1360706458, now seen corresponding path program 1 times [2022-07-19 12:43:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359593289] [2022-07-19 12:43:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2022-07-19 12:43:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:41,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359593289] [2022-07-19 12:43:41,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359593289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:41,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:41,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:43:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144722057] [2022-07-19 12:43:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:41,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:43:41,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:41,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:43:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:43:41,613 INFO L87 Difference]: Start difference. First operand 58344 states and 61757 transitions. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:44,224 INFO L93 Difference]: Finished difference Result 124784 states and 131965 transitions. [2022-07-19 12:43:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:43:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1064 [2022-07-19 12:43:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:44,317 INFO L225 Difference]: With dead ends: 124784 [2022-07-19 12:43:44,318 INFO L226 Difference]: Without dead ends: 66015 [2022-07-19 12:43:44,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:43:44,344 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 875 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:44,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 676 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:43:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66015 states. [2022-07-19 12:43:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66015 to 59192. [2022-07-19 12:43:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59192 states, 59191 states have (on average 1.0584379382000642) internal successors, (62650), 59191 states have internal predecessors, (62650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59192 states to 59192 states and 62650 transitions. [2022-07-19 12:43:44,977 INFO L78 Accepts]: Start accepts. Automaton has 59192 states and 62650 transitions. Word has length 1064 [2022-07-19 12:43:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:44,977 INFO L495 AbstractCegarLoop]: Abstraction has 59192 states and 62650 transitions. [2022-07-19 12:43:44,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:44,978 INFO L276 IsEmpty]: Start isEmpty. Operand 59192 states and 62650 transitions. [2022-07-19 12:43:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2022-07-19 12:43:45,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:45,225 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:45,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 12:43:45,226 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:45,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1016460825, now seen corresponding path program 1 times [2022-07-19 12:43:45,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:45,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711512754] [2022-07-19 12:43:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:45,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1185 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-07-19 12:43:45,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:45,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711512754] [2022-07-19 12:43:45,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711512754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:45,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:45,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:43:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235187569] [2022-07-19 12:43:45,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:45,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:43:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:43:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:45,536 INFO L87 Difference]: Start difference. First operand 59192 states and 62650 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:46,978 INFO L93 Difference]: Finished difference Result 118809 states and 125737 transitions. [2022-07-19 12:43:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:43:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1084 [2022-07-19 12:43:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:47,043 INFO L225 Difference]: With dead ends: 118809 [2022-07-19 12:43:47,044 INFO L226 Difference]: Without dead ends: 59619 [2022-07-19 12:43:47,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:43:47,255 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 113 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:47,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 721 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 12:43:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59619 states. [2022-07-19 12:43:47,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59619 to 59618. [2022-07-19 12:43:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59618 states, 59617 states have (on average 1.057584246104299) internal successors, (63050), 59617 states have internal predecessors, (63050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59618 states to 59618 states and 63050 transitions. [2022-07-19 12:43:47,812 INFO L78 Accepts]: Start accepts. Automaton has 59618 states and 63050 transitions. Word has length 1084 [2022-07-19 12:43:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:47,813 INFO L495 AbstractCegarLoop]: Abstraction has 59618 states and 63050 transitions. [2022-07-19 12:43:47,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 59618 states and 63050 transitions. [2022-07-19 12:43:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2022-07-19 12:43:47,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:47,868 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:43:47,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 12:43:47,869 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1182787935, now seen corresponding path program 1 times [2022-07-19 12:43:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:47,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365310847] [2022-07-19 12:43:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2022-07-19 12:43:48,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:48,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365310847] [2022-07-19 12:43:48,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365310847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:43:48,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:43:48,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:43:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593452241] [2022-07-19 12:43:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:43:48,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:43:48,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:48,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:43:48,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:48,467 INFO L87 Difference]: Start difference. First operand 59618 states and 63050 transitions. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:43:50,395 INFO L93 Difference]: Finished difference Result 119265 states and 126129 transitions. [2022-07-19 12:43:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:43:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1101 [2022-07-19 12:43:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:43:50,463 INFO L225 Difference]: With dead ends: 119265 [2022-07-19 12:43:50,464 INFO L226 Difference]: Without dead ends: 59617 [2022-07-19 12:43:50,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:43:50,496 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 794 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:43:50,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 115 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:43:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59617 states. [2022-07-19 12:43:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59617 to 59616. [2022-07-19 12:43:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59616 states, 59615 states have (on average 1.057099723224021) internal successors, (63019), 59615 states have internal predecessors, (63019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59616 states to 59616 states and 63019 transitions. [2022-07-19 12:43:51,251 INFO L78 Accepts]: Start accepts. Automaton has 59616 states and 63019 transitions. Word has length 1101 [2022-07-19 12:43:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:43:51,252 INFO L495 AbstractCegarLoop]: Abstraction has 59616 states and 63019 transitions. [2022-07-19 12:43:51,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:43:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 59616 states and 63019 transitions. [2022-07-19 12:43:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2022-07-19 12:43:51,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:43:51,310 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:43:51,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 12:43:51,311 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:43:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:43:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash -292384247, now seen corresponding path program 1 times [2022-07-19 12:43:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:43:51,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563306046] [2022-07-19 12:43:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:43:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1257 proven. 200 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-19 12:43:51,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:43:51,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563306046] [2022-07-19 12:43:51,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563306046] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:43:51,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265440462] [2022-07-19 12:43:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:43:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:43:51,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:43:51,952 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) [2022-07-19 12:43:51,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:43:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:43:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 12:43:52,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:43:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 670 proven. 82 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2022-07-19 12:43:52,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 12:43:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 670 proven. 82 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2022-07-19 12:43:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265440462] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 12:43:53,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 12:43:53,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-07-19 12:43:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193601477] [2022-07-19 12:43:53,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 12:43:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 12:43:53,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:43:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 12:43:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-19 12:43:53,491 INFO L87 Difference]: Start difference. First operand 59616 states and 63019 transitions. Second operand has 10 states, 10 states have (on average 157.2) internal successors, (1572), 9 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:44:02,169 INFO L93 Difference]: Finished difference Result 145675 states and 153640 transitions. [2022-07-19 12:44:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 12:44:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 157.2) internal successors, (1572), 9 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1115 [2022-07-19 12:44:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:44:02,262 INFO L225 Difference]: With dead ends: 145675 [2022-07-19 12:44:02,263 INFO L226 Difference]: Without dead ends: 86061 [2022-07-19 12:44:02,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2252 GetRequests, 2225 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2022-07-19 12:44:02,287 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 5663 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 8265 mSolverCounterSat, 1918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5663 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 10183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1918 IncrementalHoareTripleChecker+Valid, 8265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:44:02,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5663 Valid, 283 Invalid, 10183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1918 Valid, 8265 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 12:44:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86061 states. [2022-07-19 12:44:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86061 to 67707. [2022-07-19 12:44:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67707 states, 67706 states have (on average 1.050158036215402) internal successors, (71102), 67706 states have internal predecessors, (71102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67707 states to 67707 states and 71102 transitions. [2022-07-19 12:44:03,130 INFO L78 Accepts]: Start accepts. Automaton has 67707 states and 71102 transitions. Word has length 1115 [2022-07-19 12:44:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:44:03,130 INFO L495 AbstractCegarLoop]: Abstraction has 67707 states and 71102 transitions. [2022-07-19 12:44:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 157.2) internal successors, (1572), 9 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 67707 states and 71102 transitions. [2022-07-19 12:44:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2022-07-19 12:44:03,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:44:03,196 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:44:03,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 12:44:03,396 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,SelfDestructingSolverStorable26 [2022-07-19 12:44:03,397 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:44:03,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:44:03,397 INFO L85 PathProgramCache]: Analyzing trace with hash -408537547, now seen corresponding path program 1 times [2022-07-19 12:44:03,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:44:03,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119872324] [2022-07-19 12:44:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:44:03,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:44:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:44:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2390 backedges. 1619 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-07-19 12:44:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:44:03,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119872324] [2022-07-19 12:44:03,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119872324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:44:03,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:44:03,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:44:03,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25709413] [2022-07-19 12:44:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:44:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:44:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:44:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:44:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:44:03,802 INFO L87 Difference]: Start difference. First operand 67707 states and 71102 transitions. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:44:06,362 INFO L93 Difference]: Finished difference Result 143932 states and 150978 transitions. [2022-07-19 12:44:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:44:06,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1306 [2022-07-19 12:44:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:44:06,459 INFO L225 Difference]: With dead ends: 143932 [2022-07-19 12:44:06,460 INFO L226 Difference]: Without dead ends: 76652 [2022-07-19 12:44:06,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:44:06,503 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 798 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:44:06,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 188 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:44:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76652 states. [2022-07-19 12:44:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76652 to 67704. [2022-07-19 12:44:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67704 states, 67703 states have (on average 1.0437055965023707) internal successors, (70662), 67703 states have internal predecessors, (70662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67704 states to 67704 states and 70662 transitions. [2022-07-19 12:44:07,450 INFO L78 Accepts]: Start accepts. Automaton has 67704 states and 70662 transitions. Word has length 1306 [2022-07-19 12:44:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:44:07,450 INFO L495 AbstractCegarLoop]: Abstraction has 67704 states and 70662 transitions. [2022-07-19 12:44:07,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 67704 states and 70662 transitions. [2022-07-19 12:44:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2022-07-19 12:44:07,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:44:07,515 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:44:07,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 12:44:07,516 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:44:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:44:07,517 INFO L85 PathProgramCache]: Analyzing trace with hash 628013526, now seen corresponding path program 1 times [2022-07-19 12:44:07,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:44:07,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536283458] [2022-07-19 12:44:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:44:07,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:44:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:44:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2339 backedges. 940 proven. 732 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-07-19 12:44:08,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:44:08,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536283458] [2022-07-19 12:44:08,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536283458] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:44:08,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065829270] [2022-07-19 12:44:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:44:08,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:44:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:44:08,491 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) [2022-07-19 12:44:08,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 12:44:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:44:08,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 12:44:08,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:44:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2339 backedges. 1372 proven. 444 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-07-19 12:44:14,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 12:44:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2339 backedges. 1372 proven. 444 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-07-19 12:44:20,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065829270] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 12:44:20,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 12:44:20,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-07-19 12:44:20,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295348735] [2022-07-19 12:44:20,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 12:44:20,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 12:44:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:44:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 12:44:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-19 12:44:20,367 INFO L87 Difference]: Start difference. First operand 67704 states and 70662 transitions. Second operand has 17 states, 17 states have (on average 116.23529411764706) internal successors, (1976), 17 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:44:30,805 INFO L93 Difference]: Finished difference Result 158508 states and 164938 transitions. [2022-07-19 12:44:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 12:44:30,806 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 116.23529411764706) internal successors, (1976), 17 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1338 [2022-07-19 12:44:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:44:30,807 INFO L225 Difference]: With dead ends: 158508 [2022-07-19 12:44:30,808 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 12:44:30,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2720 GetRequests, 2685 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 12:44:30,855 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 6273 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 13177 mSolverCounterSat, 1906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6273 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 15083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1906 IncrementalHoareTripleChecker+Valid, 13177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:44:30,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6273 Valid, 224 Invalid, 15083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1906 Valid, 13177 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-07-19 12:44:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 12:44:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 12:44:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 12:44:30,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1338 [2022-07-19 12:44:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:44:30,857 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 12:44:30,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 116.23529411764706) internal successors, (1976), 17 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:44:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 12:44:30,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 12:44:30,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 12:44:30,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 12:44:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 12:44:31,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.