./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.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 d6cbf9f81ba67bad6e6530216804abdcdebcc68311bbd0903d94efa0ae091f20 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:13:21,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:13:21,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:13:21,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:13:21,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:13:21,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:13:21,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:13:21,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:13:21,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:13:21,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:13:21,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:13:21,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:13:21,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:13:21,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:13:21,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:13:21,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:13:21,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:13:21,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:13:21,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:13:21,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:13:21,112 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:13:21,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:13:21,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:13:21,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:13:21,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:13:21,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:13:21,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:13:21,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:13:21,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:13:21,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:13:21,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:13:21,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:13:21,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:13:21,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:13:21,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:13:21,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:13:21,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:13:21,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:13:21,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:13:21,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:13:21,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:13:21,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:13:21,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:13:21,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:13:21,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:13:21,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:13:21,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:13:21,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:13:21,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:13:21,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:13:21,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:13:21,162 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:13:21,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:13:21,163 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:13:21,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:13:21,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:13:21,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:13:21,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:13:21,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:13:21,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:13:21,164 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:13:21,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:13:21,164 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:13:21,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:13:21,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:13:21,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:13:21,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:13:21,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:13:21,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:13:21,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:13:21,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:13:21,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:13:21,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:13:21,166 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:13:21,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:13:21,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:13:21,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6cbf9f81ba67bad6e6530216804abdcdebcc68311bbd0903d94efa0ae091f20 [2022-07-19 20:13:21,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:13:21,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:13:21,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:13:21,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:13:21,377 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:13:21,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c [2022-07-19 20:13:21,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4e6c500/04583889bc494b0cb3d29ef2998a0b52/FLAG367ca7d6c [2022-07-19 20:13:21,964 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:13:21,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c [2022-07-19 20:13:21,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4e6c500/04583889bc494b0cb3d29ef2998a0b52/FLAG367ca7d6c [2022-07-19 20:13:22,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4e6c500/04583889bc494b0cb3d29ef2998a0b52 [2022-07-19 20:13:22,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:13:22,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:13:22,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:13:22,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:13:22,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:13:22,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:13:22" (1/1) ... [2022-07-19 20:13:22,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e3dd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:22, skipping insertion in model container [2022-07-19 20:13:22,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:13:22" (1/1) ... [2022-07-19 20:13:22,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:13:22,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:13:22,555 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[11677,11690] [2022-07-19 20:13:22,608 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[18738,18751] [2022-07-19 20:13:23,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:13:23,207 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:13:23,240 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[11677,11690] [2022-07-19 20:13:23,258 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[18738,18751] [2022-07-19 20:13:23,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:13:23,542 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:13:23,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23 WrapperNode [2022-07-19 20:13:23,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:13:23,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:13:23,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:13:23,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:13:23,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:23,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:23,850 INFO L137 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5091 [2022-07-19 20:13:23,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:13:23,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:13:23,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:13:23,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:13:23,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:23,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:23,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:23,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:24,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:24,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:24,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:24,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:13:24,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:13:24,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:13:24,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:13:24,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (1/1) ... [2022-07-19 20:13:24,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:13:24,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:13:24,321 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 20:13:24,343 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 20:13:24,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:13:24,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:13:24,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:13:24,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:13:24,448 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:13:24,460 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:13:27,206 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:13:27,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:13:27,222 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:13:27,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:13:27 BoogieIcfgContainer [2022-07-19 20:13:27,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:13:27,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:13:27,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:13:27,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:13:27,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:13:22" (1/3) ... [2022-07-19 20:13:27,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c9d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:13:27, skipping insertion in model container [2022-07-19 20:13:27,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:13:23" (2/3) ... [2022-07-19 20:13:27,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c9d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:13:27, skipping insertion in model container [2022-07-19 20:13:27,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:13:27" (3/3) ... [2022-07-19 20:13:27,232 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c [2022-07-19 20:13:27,241 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:13:27,241 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:13:27,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:13:27,294 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@3e29ee80, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2be97f74 [2022-07-19 20:13:27,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:13:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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 20:13:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 20:13:27,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:27,306 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] [2022-07-19 20:13:27,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:27,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:27,311 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2022-07-19 20:13:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:27,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912340991] [2022-07-19 20:13:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:27,457 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 20:13:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:27,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912340991] [2022-07-19 20:13:27,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912340991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:27,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:27,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:13:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28173237] [2022-07-19 20:13:27,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:13:27,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:13:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:13:27,490 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 20:13:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:27,550 INFO L93 Difference]: Finished difference Result 1781 states and 3374 transitions. [2022-07-19 20:13:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:13:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2022-07-19 20:13:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:27,568 INFO L225 Difference]: With dead ends: 1781 [2022-07-19 20:13:27,568 INFO L226 Difference]: Without dead ends: 843 [2022-07-19 20:13:27,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:13:27,577 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:27,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-07-19 20:13:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-07-19 20:13:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 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 20:13:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2022-07-19 20:13:27,633 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2022-07-19 20:13:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:27,634 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2022-07-19 20:13:27,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 20:13:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2022-07-19 20:13:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 20:13:27,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:27,638 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] [2022-07-19 20:13:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:13:27,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2022-07-19 20:13:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:27,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184664740] [2022-07-19 20:13:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:27,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:27,713 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 20:13:27,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:27,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184664740] [2022-07-19 20:13:27,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184664740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:27,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:27,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:13:27,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206149017] [2022-07-19 20:13:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:27,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:13:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:13:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:13:27,717 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 20:13:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:27,836 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2022-07-19 20:13:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:13:27,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2022-07-19 20:13:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:27,851 INFO L225 Difference]: With dead ends: 899 [2022-07-19 20:13:27,855 INFO L226 Difference]: Without dead ends: 843 [2022-07-19 20:13:27,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:27,864 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:27,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-07-19 20:13:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-07-19 20:13:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 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 20:13:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2022-07-19 20:13:27,888 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2022-07-19 20:13:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:27,894 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2022-07-19 20:13:27,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 20:13:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2022-07-19 20:13:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 20:13:27,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:27,896 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, 1, 1, 1, 1] [2022-07-19 20:13:27,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:13:27,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -80048283, now seen corresponding path program 1 times [2022-07-19 20:13:27,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:27,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649873139] [2022-07-19 20:13:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:27,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:28,036 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 20:13:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:28,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649873139] [2022-07-19 20:13:28,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649873139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:28,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:28,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:28,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562329163] [2022-07-19 20:13:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:13:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:13:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:13:28,039 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 20:13:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:33,016 INFO L93 Difference]: Finished difference Result 3098 states and 5867 transitions. [2022-07-19 20:13:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 20:13:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-07-19 20:13:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:33,035 INFO L225 Difference]: With dead ends: 3098 [2022-07-19 20:13:33,036 INFO L226 Difference]: Without dead ends: 2345 [2022-07-19 20:13:33,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 20:13:33,037 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2421 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:33,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 812 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-19 20:13:33,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2022-07-19 20:13:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2345. [2022-07-19 20:13:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2343 states have (on average 1.5672215108834826) internal successors, (3672), 2344 states have internal predecessors, (3672), 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 20:13:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3672 transitions. [2022-07-19 20:13:33,075 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3672 transitions. Word has length 61 [2022-07-19 20:13:33,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:33,077 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 3672 transitions. [2022-07-19 20:13:33,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 20:13:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3672 transitions. [2022-07-19 20:13:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:13:33,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:33,080 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:33,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:13:33,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2022-07-19 20:13:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:33,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476820745] [2022-07-19 20:13:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:33,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:33,155 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 20:13:33,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476820745] [2022-07-19 20:13:33,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476820745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:33,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:33,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:33,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099839199] [2022-07-19 20:13:33,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:33,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:13:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:13:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:13:33,171 INFO L87 Difference]: Start difference. First operand 2345 states and 3672 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:33,196 INFO L93 Difference]: Finished difference Result 2443 states and 3826 transitions. [2022-07-19 20:13:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:13:33,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 20:13:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:33,203 INFO L225 Difference]: With dead ends: 2443 [2022-07-19 20:13:33,203 INFO L226 Difference]: Without dead ends: 2391 [2022-07-19 20:13:33,204 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 20:13:33,213 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:33,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2022-07-19 20:13:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2389. [2022-07-19 20:13:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2387 states have (on average 1.5676581483033096) internal successors, (3742), 2388 states have internal predecessors, (3742), 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 20:13:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3742 transitions. [2022-07-19 20:13:33,252 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3742 transitions. Word has length 64 [2022-07-19 20:13:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:33,254 INFO L495 AbstractCegarLoop]: Abstraction has 2389 states and 3742 transitions. [2022-07-19 20:13:33,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3742 transitions. [2022-07-19 20:13:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:13:33,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:33,259 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:33,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:13:33,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2022-07-19 20:13:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:33,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169692820] [2022-07-19 20:13:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:33,325 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 20:13:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:33,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169692820] [2022-07-19 20:13:33,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169692820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:33,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:33,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301297100] [2022-07-19 20:13:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:33,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:13:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:13:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:13:33,327 INFO L87 Difference]: Start difference. First operand 2389 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:33,355 INFO L93 Difference]: Finished difference Result 2569 states and 4026 transitions. [2022-07-19 20:13:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:13:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 20:13:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:33,363 INFO L225 Difference]: With dead ends: 2569 [2022-07-19 20:13:33,363 INFO L226 Difference]: Without dead ends: 2473 [2022-07-19 20:13:33,364 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 20:13:33,368 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:33,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-07-19 20:13:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2022-07-19 20:13:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5678412312677197) internal successors, (3871), 2470 states have internal predecessors, (3871), 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 20:13:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3871 transitions. [2022-07-19 20:13:33,410 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3871 transitions. Word has length 64 [2022-07-19 20:13:33,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:33,412 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3871 transitions. [2022-07-19 20:13:33,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3871 transitions. [2022-07-19 20:13:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:13:33,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:33,414 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:13:33,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:33,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2022-07-19 20:13:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:33,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011076163] [2022-07-19 20:13:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:33,476 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 20:13:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:33,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011076163] [2022-07-19 20:13:33,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011076163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:33,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:33,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87915960] [2022-07-19 20:13:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:13:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:13:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:13:33,479 INFO L87 Difference]: Start difference. First operand 2471 states and 3871 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:33,511 INFO L93 Difference]: Finished difference Result 2803 states and 4393 transitions. [2022-07-19 20:13:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:13:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 20:13:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:33,520 INFO L225 Difference]: With dead ends: 2803 [2022-07-19 20:13:33,520 INFO L226 Difference]: Without dead ends: 2625 [2022-07-19 20:13:33,521 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 20:13:33,522 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:33,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2022-07-19 20:13:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2623. [2022-07-19 20:13:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2621 states have (on average 1.566959175887066) internal successors, (4107), 2622 states have internal predecessors, (4107), 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 20:13:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4107 transitions. [2022-07-19 20:13:33,571 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4107 transitions. Word has length 64 [2022-07-19 20:13:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:33,571 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4107 transitions. [2022-07-19 20:13:33,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4107 transitions. [2022-07-19 20:13:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:13:33,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:33,572 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:33,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:13:33,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2022-07-19 20:13:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987766822] [2022-07-19 20:13:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:33,613 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 20:13:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:33,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987766822] [2022-07-19 20:13:33,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987766822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:33,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:33,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069169654] [2022-07-19 20:13:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:13:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:13:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:13:33,616 INFO L87 Difference]: Start difference. First operand 2623 states and 4107 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:33,657 INFO L93 Difference]: Finished difference Result 3235 states and 5061 transitions. [2022-07-19 20:13:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:13:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 20:13:33,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:33,668 INFO L225 Difference]: With dead ends: 3235 [2022-07-19 20:13:33,668 INFO L226 Difference]: Without dead ends: 2905 [2022-07-19 20:13:33,672 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 20:13:33,673 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:33,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-07-19 20:13:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2903. [2022-07-19 20:13:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2901 states have (on average 1.5632540503274732) internal successors, (4535), 2902 states have internal predecessors, (4535), 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 20:13:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4535 transitions. [2022-07-19 20:13:33,734 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4535 transitions. Word has length 64 [2022-07-19 20:13:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:33,735 INFO L495 AbstractCegarLoop]: Abstraction has 2903 states and 4535 transitions. [2022-07-19 20:13:33,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4535 transitions. [2022-07-19 20:13:33,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:13:33,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:33,736 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:33,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:13:33,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2022-07-19 20:13:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:33,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600144099] [2022-07-19 20:13:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:33,771 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 20:13:33,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:33,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600144099] [2022-07-19 20:13:33,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600144099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:33,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:33,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990144009] [2022-07-19 20:13:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:33,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:13:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:13:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:13:33,774 INFO L87 Difference]: Start difference. First operand 2903 states and 4535 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:33,865 INFO L93 Difference]: Finished difference Result 4027 states and 6265 transitions. [2022-07-19 20:13:33,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:13:33,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 20:13:33,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:33,874 INFO L225 Difference]: With dead ends: 4027 [2022-07-19 20:13:33,875 INFO L226 Difference]: Without dead ends: 3417 [2022-07-19 20:13:33,876 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 20:13:33,876 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:33,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2022-07-19 20:13:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3415. [2022-07-19 20:13:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3413 states have (on average 1.553765016114855) internal successors, (5303), 3414 states have internal predecessors, (5303), 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 20:13:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5303 transitions. [2022-07-19 20:13:33,968 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5303 transitions. Word has length 64 [2022-07-19 20:13:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:33,969 INFO L495 AbstractCegarLoop]: Abstraction has 3415 states and 5303 transitions. [2022-07-19 20:13:33,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:13:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5303 transitions. [2022-07-19 20:13:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:13:33,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:33,971 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:33,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:13:33,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2022-07-19 20:13:33,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:33,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918951583] [2022-07-19 20:13:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:33,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:34,036 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 20:13:34,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:34,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918951583] [2022-07-19 20:13:34,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918951583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:34,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:34,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075945489] [2022-07-19 20:13:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:34,039 INFO L87 Difference]: Start difference. First operand 3415 states and 5303 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 20:13:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:34,645 INFO L93 Difference]: Finished difference Result 14635 states and 22433 transitions. [2022-07-19 20:13:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:13:34,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2022-07-19 20:13:34,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:34,691 INFO L225 Difference]: With dead ends: 14635 [2022-07-19 20:13:34,691 INFO L226 Difference]: Without dead ends: 13513 [2022-07-19 20:13:34,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:13:34,697 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:34,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:13:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13513 states. [2022-07-19 20:13:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13513 to 4535. [2022-07-19 20:13:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5334215751158173) internal successors, (6951), 4534 states have internal predecessors, (6951), 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 20:13:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6951 transitions. [2022-07-19 20:13:34,909 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6951 transitions. Word has length 64 [2022-07-19 20:13:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:34,909 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6951 transitions. [2022-07-19 20:13:34,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 20:13:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6951 transitions. [2022-07-19 20:13:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:13:34,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:34,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:34,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:13:34,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:34,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2022-07-19 20:13:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:34,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361605510] [2022-07-19 20:13:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:34,952 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 20:13:34,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:34,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361605510] [2022-07-19 20:13:34,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361605510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:34,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:34,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:13:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149020038] [2022-07-19 20:13:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:13:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:13:34,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:13:34,957 INFO L87 Difference]: Start difference. First operand 4535 states and 6951 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 20:13:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:35,127 INFO L93 Difference]: Finished difference Result 7821 states and 11867 transitions. [2022-07-19 20:13:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:13:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-07-19 20:13:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:35,136 INFO L225 Difference]: With dead ends: 7821 [2022-07-19 20:13:35,136 INFO L226 Difference]: Without dead ends: 5579 [2022-07-19 20:13:35,140 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 20:13:35,141 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:35,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:35,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2022-07-19 20:13:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2022-07-19 20:13:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.51695067264574) internal successors, (8457), 5576 states have internal predecessors, (8457), 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 20:13:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8457 transitions. [2022-07-19 20:13:35,375 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8457 transitions. Word has length 66 [2022-07-19 20:13:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:35,376 INFO L495 AbstractCegarLoop]: Abstraction has 5577 states and 8457 transitions. [2022-07-19 20:13:35,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 20:13:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8457 transitions. [2022-07-19 20:13:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:13:35,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:35,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:13:35,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2022-07-19 20:13:35,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:35,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384476581] [2022-07-19 20:13:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:35,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:35,514 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 20:13:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:35,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384476581] [2022-07-19 20:13:35,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384476581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:35,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:35,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22319938] [2022-07-19 20:13:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:35,517 INFO L87 Difference]: Start difference. First operand 5577 states and 8457 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 20:13:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:35,784 INFO L93 Difference]: Finished difference Result 8861 states and 13323 transitions. [2022-07-19 20:13:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:35,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2022-07-19 20:13:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:35,794 INFO L225 Difference]: With dead ends: 8861 [2022-07-19 20:13:35,794 INFO L226 Difference]: Without dead ends: 5579 [2022-07-19 20:13:35,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:13:35,799 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 4654 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4654 Valid, 1867 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2022-07-19 20:13:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2022-07-19 20:13:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.5083408071748878) internal successors, (8409), 5576 states have internal predecessors, (8409), 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 20:13:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8409 transitions. [2022-07-19 20:13:36,090 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8409 transitions. Word has length 66 [2022-07-19 20:13:36,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:36,090 INFO L495 AbstractCegarLoop]: Abstraction has 5577 states and 8409 transitions. [2022-07-19 20:13:36,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 20:13:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8409 transitions. [2022-07-19 20:13:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:13:36,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:36,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:36,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:13:36,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2022-07-19 20:13:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675618488] [2022-07-19 20:13:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:36,150 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 20:13:36,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:36,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675618488] [2022-07-19 20:13:36,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675618488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:36,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:36,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:13:36,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338895414] [2022-07-19 20:13:36,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:36,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:13:36,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:36,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:13:36,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:13:36,152 INFO L87 Difference]: Start difference. First operand 5577 states and 8409 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 20:13:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:36,418 INFO L93 Difference]: Finished difference Result 8859 states and 13226 transitions. [2022-07-19 20:13:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:13:36,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-07-19 20:13:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:36,427 INFO L225 Difference]: With dead ends: 8859 [2022-07-19 20:13:36,428 INFO L226 Difference]: Without dead ends: 5577 [2022-07-19 20:13:36,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:13:36,432 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 4687 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:36,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 3007 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2022-07-19 20:13:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2022-07-19 20:13:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.4997309417040359) internal successors, (8361), 5576 states have internal predecessors, (8361), 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 20:13:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8361 transitions. [2022-07-19 20:13:36,698 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8361 transitions. Word has length 67 [2022-07-19 20:13:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:36,699 INFO L495 AbstractCegarLoop]: Abstraction has 5577 states and 8361 transitions. [2022-07-19 20:13:36,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 20:13:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8361 transitions. [2022-07-19 20:13:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:13:36,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:36,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:13:36,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:36,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2022-07-19 20:13:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:36,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43230356] [2022-07-19 20:13:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:36,742 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 20:13:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:36,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43230356] [2022-07-19 20:13:36,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43230356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:36,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:36,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:13:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493177991] [2022-07-19 20:13:36,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:36,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:13:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:13:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:13:36,745 INFO L87 Difference]: Start difference. First operand 5577 states and 8361 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 20:13:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:37,061 INFO L93 Difference]: Finished difference Result 8859 states and 13130 transitions. [2022-07-19 20:13:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:13:37,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-07-19 20:13:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:37,071 INFO L225 Difference]: With dead ends: 8859 [2022-07-19 20:13:37,071 INFO L226 Difference]: Without dead ends: 5577 [2022-07-19 20:13:37,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:13:37,076 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 4660 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:37,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 3023 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2022-07-19 20:13:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2022-07-19 20:13:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.491121076233184) internal successors, (8313), 5576 states have internal predecessors, (8313), 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 20:13:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8313 transitions. [2022-07-19 20:13:37,304 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8313 transitions. Word has length 67 [2022-07-19 20:13:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:37,305 INFO L495 AbstractCegarLoop]: Abstraction has 5577 states and 8313 transitions. [2022-07-19 20:13:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 20:13:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8313 transitions. [2022-07-19 20:13:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:13:37,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:37,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:13:37,306 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2022-07-19 20:13:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:37,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662236688] [2022-07-19 20:13:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:37,347 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 20:13:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:37,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662236688] [2022-07-19 20:13:37,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662236688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:37,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:37,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:13:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229216756] [2022-07-19 20:13:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:13:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:13:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:13:37,350 INFO L87 Difference]: Start difference. First operand 5577 states and 8313 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 20:13:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:37,805 INFO L93 Difference]: Finished difference Result 8420 states and 12287 transitions. [2022-07-19 20:13:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-07-19 20:13:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:37,817 INFO L225 Difference]: With dead ends: 8420 [2022-07-19 20:13:37,818 INFO L226 Difference]: Without dead ends: 8418 [2022-07-19 20:13:37,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:13:37,820 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 211 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:37,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 6242 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2022-07-19 20:13:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 5769. [2022-07-19 20:13:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.4719958383908445) internal successors, (8489), 5768 states have internal predecessors, (8489), 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 20:13:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8489 transitions. [2022-07-19 20:13:38,152 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8489 transitions. Word has length 67 [2022-07-19 20:13:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:38,152 INFO L495 AbstractCegarLoop]: Abstraction has 5769 states and 8489 transitions. [2022-07-19 20:13:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 20:13:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8489 transitions. [2022-07-19 20:13:38,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:13:38,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:38,154 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:13:38,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:13:38,155 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:38,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2022-07-19 20:13:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654706579] [2022-07-19 20:13:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:38,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 20:13:38,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:38,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654706579] [2022-07-19 20:13:38,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654706579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:38,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:38,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619730406] [2022-07-19 20:13:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:38,208 INFO L87 Difference]: Start difference. First operand 5769 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 20:13:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:39,528 INFO L93 Difference]: Finished difference Result 23845 states and 33919 transitions. [2022-07-19 20:13:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 95 [2022-07-19 20:13:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:39,554 INFO L225 Difference]: With dead ends: 23845 [2022-07-19 20:13:39,554 INFO L226 Difference]: Without dead ends: 20371 [2022-07-19 20:13:39,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:13:39,562 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6579 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6579 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:39,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6579 Valid, 3547 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:13:39,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2022-07-19 20:13:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2022-07-19 20:13:40,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.443554497239961) internal successors, (13337), 9240 states have internal predecessors, (13337), 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 20:13:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13337 transitions. [2022-07-19 20:13:40,204 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13337 transitions. Word has length 95 [2022-07-19 20:13:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:40,204 INFO L495 AbstractCegarLoop]: Abstraction has 9241 states and 13337 transitions. [2022-07-19 20:13:40,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 20:13:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13337 transitions. [2022-07-19 20:13:40,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:13:40,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:40,207 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:13:40,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:13:40,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2022-07-19 20:13:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:40,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102450606] [2022-07-19 20:13:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 20:13:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:40,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102450606] [2022-07-19 20:13:40,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102450606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:40,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:40,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:40,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179714982] [2022-07-19 20:13:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:40,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:40,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:40,265 INFO L87 Difference]: Start difference. First operand 9241 states and 13337 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 20:13:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:41,894 INFO L93 Difference]: Finished difference Result 27317 states and 38767 transitions. [2022-07-19 20:13:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:41,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 95 [2022-07-19 20:13:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:41,919 INFO L225 Difference]: With dead ends: 27317 [2022-07-19 20:13:41,920 INFO L226 Difference]: Without dead ends: 23843 [2022-07-19 20:13:41,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:13:41,927 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6478 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6478 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:41,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6478 Valid, 3598 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2022-07-19 20:13:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2022-07-19 20:13:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14455 states have (on average 1.4229678312002767) internal successors, (20569), 14456 states have internal predecessors, (20569), 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 20:13:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20569 transitions. [2022-07-19 20:13:43,137 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20569 transitions. Word has length 95 [2022-07-19 20:13:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:43,137 INFO L495 AbstractCegarLoop]: Abstraction has 14457 states and 20569 transitions. [2022-07-19 20:13:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 20:13:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20569 transitions. [2022-07-19 20:13:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:13:43,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:43,141 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:13:43,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:13:43,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2022-07-19 20:13:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:43,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662203892] [2022-07-19 20:13:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 20:13:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:43,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662203892] [2022-07-19 20:13:43,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662203892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:43,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:43,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792502688] [2022-07-19 20:13:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:43,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:43,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:43,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:43,190 INFO L87 Difference]: Start difference. First operand 14457 states and 20569 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 20:13:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:45,176 INFO L93 Difference]: Finished difference Result 30789 states and 43615 transitions. [2022-07-19 20:13:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 95 [2022-07-19 20:13:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:45,207 INFO L225 Difference]: With dead ends: 30789 [2022-07-19 20:13:45,207 INFO L226 Difference]: Without dead ends: 27315 [2022-07-19 20:13:45,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:13:45,216 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6494 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:45,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6494 Valid, 3610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2022-07-19 20:13:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2022-07-19 20:13:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17927 states have (on average 1.417805544709098) internal successors, (25417), 17928 states have internal predecessors, (25417), 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 20:13:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25417 transitions. [2022-07-19 20:13:46,622 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25417 transitions. Word has length 95 [2022-07-19 20:13:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:46,622 INFO L495 AbstractCegarLoop]: Abstraction has 17929 states and 25417 transitions. [2022-07-19 20:13:46,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 20:13:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25417 transitions. [2022-07-19 20:13:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:13:46,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:46,627 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:13:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:13:46,628 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2022-07-19 20:13:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:46,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193023884] [2022-07-19 20:13:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:13:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:46,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193023884] [2022-07-19 20:13:46,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193023884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:46,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:46,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010112109] [2022-07-19 20:13:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:46,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:46,681 INFO L87 Difference]: Start difference. First operand 17929 states and 25417 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 20:13:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:49,392 INFO L93 Difference]: Finished difference Result 34261 states and 48463 transitions. [2022-07-19 20:13:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:49,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 95 [2022-07-19 20:13:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:49,438 INFO L225 Difference]: With dead ends: 34261 [2022-07-19 20:13:49,439 INFO L226 Difference]: Without dead ends: 30787 [2022-07-19 20:13:49,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:13:49,450 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 6562 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6562 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:49,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6562 Valid, 3614 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2022-07-19 20:13:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2022-07-19 20:13:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21399 states have (on average 1.4143184260946773) internal successors, (30265), 21400 states have internal predecessors, (30265), 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 20:13:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30265 transitions. [2022-07-19 20:13:51,289 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30265 transitions. Word has length 95 [2022-07-19 20:13:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:51,289 INFO L495 AbstractCegarLoop]: Abstraction has 21401 states and 30265 transitions. [2022-07-19 20:13:51,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 20:13:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30265 transitions. [2022-07-19 20:13:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:13:51,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:51,294 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:13:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:13:51,295 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2022-07-19 20:13:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842761549] [2022-07-19 20:13:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:13:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:51,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842761549] [2022-07-19 20:13:51,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842761549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:13:51,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:13:51,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:13:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902626374] [2022-07-19 20:13:51,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:13:51,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:13:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:13:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:13:51,345 INFO L87 Difference]: Start difference. First operand 21401 states and 30265 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 20:13:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:13:54,433 INFO L93 Difference]: Finished difference Result 35653 states and 50431 transitions. [2022-07-19 20:13:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:13:54,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 95 [2022-07-19 20:13:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:13:54,473 INFO L225 Difference]: With dead ends: 35653 [2022-07-19 20:13:54,473 INFO L226 Difference]: Without dead ends: 33219 [2022-07-19 20:13:54,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:13:54,483 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:13:54,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:13:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2022-07-19 20:13:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2022-07-19 20:13:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23833 states, 23831 states have (on average 1.4136628760857706) internal successors, (33689), 23832 states have internal predecessors, (33689), 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 20:13:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33689 transitions. [2022-07-19 20:13:56,664 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33689 transitions. Word has length 95 [2022-07-19 20:13:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:13:56,665 INFO L495 AbstractCegarLoop]: Abstraction has 23833 states and 33689 transitions. [2022-07-19 20:13:56,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 20:13:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33689 transitions. [2022-07-19 20:13:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 20:13:56,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:13:56,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:13:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:13:56,670 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:13:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:13:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2022-07-19 20:13:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:13:56,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092301844] [2022-07-19 20:13:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:13:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:13:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:13:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092301844] [2022-07-19 20:13:56,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092301844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:13:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235750627] [2022-07-19 20:13:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:13:56,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:13:56,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:13:56,728 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 20:13:56,732 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 20:13:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:13:56,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 20:13:56,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:13:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:13:56,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:13:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:13:57,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235750627] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:13:57,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:13:57,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-07-19 20:13:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280537634] [2022-07-19 20:13:57,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:13:57,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:13:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:13:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:13:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:13:57,259 INFO L87 Difference]: Start difference. First operand 23833 states and 33689 transitions. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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 20:14:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:14:03,494 INFO L93 Difference]: Finished difference Result 81022 states and 114579 transitions. [2022-07-19 20:14:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:14:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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 96 [2022-07-19 20:14:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:14:03,572 INFO L225 Difference]: With dead ends: 81022 [2022-07-19 20:14:03,572 INFO L226 Difference]: Without dead ends: 65212 [2022-07-19 20:14:03,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 181 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:14:03,593 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 1996 mSDsluCounter, 5008 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 6649 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:14:03,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1996 Valid, 6649 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:14:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65212 states. [2022-07-19 20:14:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65212 to 64681. [2022-07-19 20:14:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64681 states, 64679 states have (on average 1.3869262047959925) internal successors, (89705), 64680 states have internal predecessors, (89705), 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 20:14:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64681 states to 64681 states and 89705 transitions. [2022-07-19 20:14:10,236 INFO L78 Accepts]: Start accepts. Automaton has 64681 states and 89705 transitions. Word has length 96 [2022-07-19 20:14:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:14:10,236 INFO L495 AbstractCegarLoop]: Abstraction has 64681 states and 89705 transitions. [2022-07-19 20:14:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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 20:14:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 64681 states and 89705 transitions. [2022-07-19 20:14:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 20:14:10,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:14:10,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:10,259 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 20:14:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:14:10,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:14:10,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:14:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1408959169, now seen corresponding path program 1 times [2022-07-19 20:14:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:14:10,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136538516] [2022-07-19 20:14:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:14:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:14:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:14:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:14:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:14:10,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136538516] [2022-07-19 20:14:10,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136538516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:14:10,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302642626] [2022-07-19 20:14:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:14:10,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:14:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:14:10,580 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 20:14:10,580 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 20:14:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:14:10,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 20:14:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:14:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:14:11,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:14:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:14:11,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302642626] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:14:11,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:14:11,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-07-19 20:14:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353472954] [2022-07-19 20:14:11,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:14:11,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 20:14:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:14:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 20:14:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-07-19 20:14:11,582 INFO L87 Difference]: Start difference. First operand 64681 states and 89705 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 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)