./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/loop-new/nested-1.i -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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 23:58:14,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 23:58:14,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 23:58:14,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 23:58:14,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 23:58:14,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 23:58:14,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 23:58:14,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 23:58:14,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 23:58:14,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 23:58:14,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 23:58:14,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 23:58:14,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 23:58:14,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 23:58:14,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 23:58:14,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 23:58:14,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 23:58:14,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 23:58:14,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 23:58:14,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 23:58:14,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 23:58:14,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 23:58:14,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 23:58:14,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 23:58:14,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 23:58:14,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 23:58:14,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 23:58:14,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 23:58:14,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 23:58:14,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 23:58:14,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 23:58:14,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 23:58:14,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 23:58:14,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 23:58:14,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 23:58:14,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 23:58:14,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 23:58:14,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 23:58:14,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 23:58:14,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 23:58:14,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 23:58:14,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 23:58:14,205 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 23:58:14,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 23:58:14,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 23:58:14,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 23:58:14,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 23:58:14,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 23:58:14,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 23:58:14,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 23:58:14,208 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 23:58:14,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 23:58:14,209 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 23:58:14,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 23:58:14,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 23:58:14,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 23:58:14,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 23:58:14,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 23:58:14,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 23:58:14,210 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 23:58:14,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 23:58:14,211 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 23:58:14,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 23:58:14,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 23:58:14,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 23:58:14,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 23:58:14,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:58:14,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 23:58:14,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 23:58:14,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 23:58:14,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 23:58:14,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 23:58:14,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 23:58:14,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 23:58:14,213 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 23:58:14,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 23:58:14,214 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 23:58:14,214 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2023-02-13 23:58:14,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 23:58:14,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 23:58:14,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 23:58:14,470 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 23:58:14,470 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 23:58:14,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/nested-1.i [2023-02-13 23:58:15,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 23:58:15,817 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 23:58:15,817 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i [2023-02-13 23:58:15,822 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eedbdf82/3d448d5b511e42169932e49d84973017/FLAG35c9d4fac [2023-02-13 23:58:15,834 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eedbdf82/3d448d5b511e42169932e49d84973017 [2023-02-13 23:58:15,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 23:58:15,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 23:58:15,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 23:58:15,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 23:58:15,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 23:58:15,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:58:15" (1/1) ... [2023-02-13 23:58:15,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a7dfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:15, skipping insertion in model container [2023-02-13 23:58:15,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:58:15" (1/1) ... [2023-02-13 23:58:15,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 23:58:15,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:58:15,975 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2023-02-13 23:58:15,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:58:16,002 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 23:58:16,014 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2023-02-13 23:58:16,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:58:16,028 INFO L208 MainTranslator]: Completed translation [2023-02-13 23:58:16,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16 WrapperNode [2023-02-13 23:58:16,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 23:58:16,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 23:58:16,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 23:58:16,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 23:58:16,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,051 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2023-02-13 23:58:16,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 23:58:16,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 23:58:16,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 23:58:16,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 23:58:16,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 23:58:16,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 23:58:16,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 23:58:16,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 23:58:16,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (1/1) ... [2023-02-13 23:58:16,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:58:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:58:16,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-13 23:58:16,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-13 23:58:16,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 23:58:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 23:58:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 23:58:16,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 23:58:16,172 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 23:58:16,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 23:58:16,275 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 23:58:16,281 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 23:58:16,281 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-13 23:58:16,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:58:16 BoogieIcfgContainer [2023-02-13 23:58:16,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 23:58:16,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 23:58:16,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 23:58:16,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 23:58:16,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 11:58:15" (1/3) ... [2023-02-13 23:58:16,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee95ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:58:16, skipping insertion in model container [2023-02-13 23:58:16,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:58:16" (2/3) ... [2023-02-13 23:58:16,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee95ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:58:16, skipping insertion in model container [2023-02-13 23:58:16,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:58:16" (3/3) ... [2023-02-13 23:58:16,290 INFO L112 eAbstractionObserver]: Analyzing ICFG nested-1.i [2023-02-13 23:58:16,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 23:58:16,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-13 23:58:16,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 23:58:16,361 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30640f49, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 23:58:16,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-13 23:58:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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) [2023-02-13 23:58:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-13 23:58:16,369 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:16,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:16,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash 179613278, now seen corresponding path program 1 times [2023-02-13 23:58:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145011280] [2023-02-13 23:58:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:16,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145011280] [2023-02-13 23:58:16,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145011280] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:58:16,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:58:16,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-13 23:58:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521128305] [2023-02-13 23:58:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:58:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 23:58:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:16,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 23:58:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 23:58:16,676 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-13 23:58:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:16,731 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2023-02-13 23:58:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:58:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-02-13 23:58:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:16,739 INFO L225 Difference]: With dead ends: 35 [2023-02-13 23:58:16,739 INFO L226 Difference]: Without dead ends: 16 [2023-02-13 23:58:16,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 23:58:16,744 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:58:16,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:58:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-13 23:58:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2023-02-13 23:58:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-02-13 23:58:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-13 23:58:16,779 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-02-13 23:58:16,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:16,779 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-13 23:58:16,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-13 23:58:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-13 23:58:16,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-13 23:58:16,780 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:16,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:16,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-13 23:58:16,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:16,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 754200042, now seen corresponding path program 1 times [2023-02-13 23:58:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:16,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577697327] [2023-02-13 23:58:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:16,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:16,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:16,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577697327] [2023-02-13 23:58:16,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577697327] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:58:16,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:58:16,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-13 23:58:16,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891289251] [2023-02-13 23:58:16,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:58:16,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 23:58:16,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:16,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 23:58:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 23:58:16,857 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-13 23:58:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:16,871 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-02-13 23:58:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:58:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-02-13 23:58:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:16,873 INFO L225 Difference]: With dead ends: 23 [2023-02-13 23:58:16,873 INFO L226 Difference]: Without dead ends: 15 [2023-02-13 23:58:16,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 23:58:16,881 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:58:16,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:58:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-13 23:58:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-02-13 23:58:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2023-02-13 23:58:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-13 23:58:16,892 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2023-02-13 23:58:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:16,893 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-13 23:58:16,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-13 23:58:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-13 23:58:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-13 23:58:16,894 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:16,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-13 23:58:16,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash -902976276, now seen corresponding path program 1 times [2023-02-13 23:58:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:16,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073670902] [2023-02-13 23:58:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:17,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:17,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073670902] [2023-02-13 23:58:17,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073670902] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:58:17,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766991632] [2023-02-13 23:58:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:17,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:17,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:58:17,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:58:17,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 23:58:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:17,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-13 23:58:17,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:58:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:17,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:58:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:17,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766991632] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 23:58:17,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 23:58:17,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-02-13 23:58:17,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370137835] [2023-02-13 23:58:17,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 23:58:17,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-13 23:58:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-13 23:58:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-13 23:58:17,205 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2023-02-13 23:58:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:17,266 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-02-13 23:58:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-13 23:58:17,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 13 [2023-02-13 23:58:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:17,270 INFO L225 Difference]: With dead ends: 29 [2023-02-13 23:58:17,270 INFO L226 Difference]: Without dead ends: 20 [2023-02-13 23:58:17,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-13 23:58:17,273 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:58:17,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:58:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-13 23:58:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-13 23:58:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-02-13 23:58:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-02-13 23:58:17,278 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2023-02-13 23:58:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:17,279 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-02-13 23:58:17,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2023-02-13 23:58:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-02-13 23:58:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-13 23:58:17,280 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:17,280 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:17,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-13 23:58:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:17,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash 86791922, now seen corresponding path program 2 times [2023-02-13 23:58:17,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:17,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905087407] [2023-02-13 23:58:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:17,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:17,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905087407] [2023-02-13 23:58:17,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905087407] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:58:17,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073928108] [2023-02-13 23:58:17,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 23:58:17,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:17,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:58:17,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:58:17,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 23:58:17,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 23:58:17,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 23:58:17,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-13 23:58:17,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:58:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:17,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:58:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:58:17,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073928108] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 23:58:17,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 23:58:17,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-02-13 23:58:17,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475903778] [2023-02-13 23:58:17,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 23:58:17,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-13 23:58:17,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-13 23:58:17,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2023-02-13 23:58:17,976 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2023-02-13 23:58:18,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:18,094 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-02-13 23:58:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-13 23:58:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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 19 [2023-02-13 23:58:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:18,097 INFO L225 Difference]: With dead ends: 47 [2023-02-13 23:58:18,097 INFO L226 Difference]: Without dead ends: 32 [2023-02-13 23:58:18,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2023-02-13 23:58:18,100 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:58:18,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 26 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:58:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-13 23:58:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-13 23:58:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2023-02-13 23:58:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-02-13 23:58:18,115 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2023-02-13 23:58:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:18,115 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-02-13 23:58:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2023-02-13 23:58:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-02-13 23:58:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-13 23:58:18,117 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:18,117 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:18,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-13 23:58:18,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-13 23:58:18,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash -238373506, now seen corresponding path program 3 times [2023-02-13 23:58:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:18,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926234415] [2023-02-13 23:58:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:18,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-13 23:58:18,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:18,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926234415] [2023-02-13 23:58:18,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926234415] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:58:18,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153080994] [2023-02-13 23:58:18,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-13 23:58:18,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:58:18,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:58:18,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-13 23:58:18,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-13 23:58:18,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 23:58:18,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-13 23:58:18,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:58:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-13 23:58:18,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:58:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-13 23:58:18,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153080994] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 23:58:18,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 23:58:18,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-02-13 23:58:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622359786] [2023-02-13 23:58:18,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 23:58:18,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-13 23:58:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-13 23:58:18,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-13 23:58:18,641 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2023-02-13 23:58:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:18,697 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2023-02-13 23:58:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-13 23:58:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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 31 [2023-02-13 23:58:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:18,700 INFO L225 Difference]: With dead ends: 105 [2023-02-13 23:58:18,701 INFO L226 Difference]: Without dead ends: 101 [2023-02-13 23:58:18,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-13 23:58:18,702 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 31 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 [2023-02-13 23:58:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:58:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-13 23:58:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-02-13 23:58:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 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) [2023-02-13 23:58:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2023-02-13 23:58:18,726 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 31 [2023-02-13 23:58:18,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:18,726 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2023-02-13 23:58:18,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2023-02-13 23:58:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2023-02-13 23:58:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-02-13 23:58:18,731 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:18,731 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:18,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-13 23:58:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:18,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -112220578, now seen corresponding path program 4 times [2023-02-13 23:58:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419274114] [2023-02-13 23:58:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-02-13 23:58:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419274114] [2023-02-13 23:58:19,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419274114] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:58:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092581700] [2023-02-13 23:58:19,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-13 23:58:19,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:19,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:58:19,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:58:19,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-13 23:58:19,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-13 23:58:19,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 23:58:19,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-13 23:58:19,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:58:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-02-13 23:58:19,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:58:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-02-13 23:58:19,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092581700] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 23:58:19,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 23:58:19,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-02-13 23:58:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931924675] [2023-02-13 23:58:19,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 23:58:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-13 23:58:19,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:19,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-13 23:58:19,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2023-02-13 23:58:19,808 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 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) [2023-02-13 23:58:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:19,913 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2023-02-13 23:58:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-13 23:58:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 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 100 [2023-02-13 23:58:19,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:19,918 INFO L225 Difference]: With dead ends: 243 [2023-02-13 23:58:19,918 INFO L226 Difference]: Without dead ends: 239 [2023-02-13 23:58:19,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2023-02-13 23:58:19,919 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:58:19,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 52 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:58:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-02-13 23:58:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-02-13 23:58:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 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) [2023-02-13 23:58:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 249 transitions. [2023-02-13 23:58:19,946 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 249 transitions. Word has length 100 [2023-02-13 23:58:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:19,946 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 249 transitions. [2023-02-13 23:58:19,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 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) [2023-02-13 23:58:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 249 transitions. [2023-02-13 23:58:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-02-13 23:58:19,950 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:58:19,950 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:58:19,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-13 23:58:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:20,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:58:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:58:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -16999842, now seen corresponding path program 5 times [2023-02-13 23:58:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:58:20,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028037189] [2023-02-13 23:58:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:58:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:58:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:58:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 10917 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-13 23:58:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:58:27,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028037189] [2023-02-13 23:58:27,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028037189] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:58:27,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629997378] [2023-02-13 23:58:27,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-13 23:58:27,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:27,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:58:27,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:58:27,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-13 23:58:27,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2023-02-13 23:58:27,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 23:58:27,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 107 conjunts are in the unsatisfiable core [2023-02-13 23:58:27,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:58:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-13 23:58:27,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:58:27,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629997378] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:58:27,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-13 23:58:27,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [104] total 106 [2023-02-13 23:58:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473568357] [2023-02-13 23:58:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:58:27,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-02-13 23:58:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:58:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-02-13 23:58:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2023-02-13 23:58:27,692 INFO L87 Difference]: Start difference. First operand 239 states and 249 transitions. Second operand has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 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) [2023-02-13 23:58:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:58:29,052 INFO L93 Difference]: Finished difference Result 9779 states and 10239 transitions. [2023-02-13 23:58:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-13 23:58:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 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 238 [2023-02-13 23:58:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:58:29,055 INFO L225 Difference]: With dead ends: 9779 [2023-02-13 23:58:29,055 INFO L226 Difference]: Without dead ends: 0 [2023-02-13 23:58:29,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2023-02-13 23:58:29,071 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 248 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-13 23:58:29,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 2856 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-13 23:58:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-13 23:58:29,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-13 23:58:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:58:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-13 23:58:29,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2023-02-13 23:58:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:58:29,073 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 23:58:29,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 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) [2023-02-13 23:58:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-13 23:58:29,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-13 23:58:29,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-13 23:58:29,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-13 23:58:29,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:58:29,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.