./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/eureka_01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/loops/eureka_01-2.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 fc84672deb8568f357f3e53d1889a4a141611ae62422dd83eb7a6bc6f311a8b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:14:47,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:14:47,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:14:47,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:14:47,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:14:47,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:14:47,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:14:47,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:14:47,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:14:47,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:14:47,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:14:47,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:14:47,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:14:47,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:14:47,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:14:47,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:14:47,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:14:47,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:14:47,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:14:47,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:14:47,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:14:47,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:14:47,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:14:47,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:14:47,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:14:47,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:14:47,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:14:47,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:14:47,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:14:47,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:14:47,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:14:47,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:14:47,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:14:47,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:14:47,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:14:47,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:14:47,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:14:47,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:14:47,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:14:47,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:14:47,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:14:47,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:14:47,257 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:14:47,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:14:47,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:14:47,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:14:47,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:14:47,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:14:47,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:14:47,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:14:47,260 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:14:47,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:14:47,261 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:14:47,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:14:47,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:14:47,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:14:47,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:14:47,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:14:47,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:14:47,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:14:47,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:14:47,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:14:47,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:14:47,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:14:47,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:14:47,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:14:47,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:14:47,268 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:14:47,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:14:47,268 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:14:47,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc84672deb8568f357f3e53d1889a4a141611ae62422dd83eb7a6bc6f311a8b1 [2023-02-16 01:14:47,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:14:47,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:14:47,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:14:47,463 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:14:47,464 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:14:47,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/eureka_01-2.c [2023-02-16 01:14:48,555 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:14:48,711 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:14:48,712 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/eureka_01-2.c [2023-02-16 01:14:48,717 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92a66faa/37dfc6feb7294efda71e362d4dfee1df/FLAG07e7d52e4 [2023-02-16 01:14:48,730 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92a66faa/37dfc6feb7294efda71e362d4dfee1df [2023-02-16 01:14:48,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:14:48,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:14:48,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:14:48,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:14:48,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:14:48,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:48,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd2f663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48, skipping insertion in model container [2023-02-16 01:14:48,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:48,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:14:48,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:14:48,910 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/loops/eureka_01-2.c[323,336] [2023-02-16 01:14:48,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:14:48,935 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:14:48,943 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/loops/eureka_01-2.c[323,336] [2023-02-16 01:14:48,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:14:48,982 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:14:48,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48 WrapperNode [2023-02-16 01:14:48,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:14:48,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:14:48,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:14:48,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:14:48,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,022 INFO L138 Inliner]: procedures = 13, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 199 [2023-02-16 01:14:49,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:14:49,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:14:49,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:14:49,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:14:49,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:14:49,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:14:49,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:14:49,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:14:49,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (1/1) ... [2023-02-16 01:14:49,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:14:49,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:49,093 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) [2023-02-16 01:14:49,122 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 [2023-02-16 01:14:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:14:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:14:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 01:14:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 01:14:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:14:49,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:14:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 01:14:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:14:49,203 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:14:49,205 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:14:49,426 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:14:49,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:14:49,437 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-16 01:14:49,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:14:49 BoogieIcfgContainer [2023-02-16 01:14:49,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:14:49,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:14:49,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:14:49,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:14:49,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:14:48" (1/3) ... [2023-02-16 01:14:49,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4995f0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:14:49, skipping insertion in model container [2023-02-16 01:14:49,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:14:48" (2/3) ... [2023-02-16 01:14:49,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4995f0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:14:49, skipping insertion in model container [2023-02-16 01:14:49,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:14:49" (3/3) ... [2023-02-16 01:14:49,456 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2023-02-16 01:14:49,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:14:49,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:14:49,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:14:49,515 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;@5117e2e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:14:49,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:14:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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) [2023-02-16 01:14:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 01:14:49,535 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:49,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:49,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash 678614248, now seen corresponding path program 1 times [2023-02-16 01:14:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:49,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664267566] [2023-02-16 01:14:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:14:49,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:49,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664267566] [2023-02-16 01:14:49,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664267566] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:14:49,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:14:49,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:14:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855545478] [2023-02-16 01:14:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:14:49,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:14:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:14:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:14:49,756 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 5.5) internal successors, (11), 2 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) [2023-02-16 01:14:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:49,772 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions. [2023-02-16 01:14:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:14:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2023-02-16 01:14:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:49,780 INFO L225 Difference]: With dead ends: 47 [2023-02-16 01:14:49,780 INFO L226 Difference]: Without dead ends: 22 [2023-02-16 01:14:49,782 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 [2023-02-16 01:14:49,787 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2023-02-16 01:14:49,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-16 01:14:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-16 01:14:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 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) [2023-02-16 01:14:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-02-16 01:14:49,815 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 11 [2023-02-16 01:14:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:49,816 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-02-16 01:14:49,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2023-02-16 01:14:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-02-16 01:14:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 01:14:49,817 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:49,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:49,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:14:49,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:49,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash 137869947, now seen corresponding path program 1 times [2023-02-16 01:14:49,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:49,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610712151] [2023-02-16 01:14:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:49,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:14:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610712151] [2023-02-16 01:14:49,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610712151] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:14:49,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:14:49,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:14:49,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527407710] [2023-02-16 01:14:49,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:14:49,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:14:49,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:14:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:14:50,002 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2023-02-16 01:14:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:50,032 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-02-16 01:14:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:14:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2023-02-16 01:14:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:50,034 INFO L225 Difference]: With dead ends: 42 [2023-02-16 01:14:50,034 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 01:14:50,034 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 [2023-02-16 01:14:50,035 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:50,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 01:14:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-02-16 01:14:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 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) [2023-02-16 01:14:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-02-16 01:14:50,042 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 11 [2023-02-16 01:14:50,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:50,042 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-02-16 01:14:50,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2023-02-16 01:14:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-02-16 01:14:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 01:14:50,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:50,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:50,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:14:50,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1682093747, now seen corresponding path program 1 times [2023-02-16 01:14:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026763677] [2023-02-16 01:14:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:14:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:50,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026763677] [2023-02-16 01:14:50,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026763677] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:14:50,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:14:50,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:14:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357724000] [2023-02-16 01:14:50,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:14:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:14:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:14:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:14:50,112 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2023-02-16 01:14:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:50,176 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2023-02-16 01:14:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:14:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Word has length 14 [2023-02-16 01:14:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:50,178 INFO L225 Difference]: With dead ends: 51 [2023-02-16 01:14:50,178 INFO L226 Difference]: Without dead ends: 40 [2023-02-16 01:14:50,178 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 [2023-02-16 01:14:50,179 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 57 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:50,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-16 01:14:50,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2023-02-16 01:14:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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) [2023-02-16 01:14:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-02-16 01:14:50,187 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2023-02-16 01:14:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:50,188 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-02-16 01:14:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2023-02-16 01:14:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-02-16 01:14:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 01:14:50,189 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:50,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:50,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 01:14:50,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 701151449, now seen corresponding path program 1 times [2023-02-16 01:14:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:50,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045696700] [2023-02-16 01:14:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:50,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:14:50,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:50,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045696700] [2023-02-16 01:14:50,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045696700] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:14:50,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:14:50,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:14:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226523538] [2023-02-16 01:14:50,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:14:50,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:14:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:14:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:14:50,284 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-02-16 01:14:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:50,318 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2023-02-16 01:14:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:14:50,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-02-16 01:14:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:50,320 INFO L225 Difference]: With dead ends: 43 [2023-02-16 01:14:50,320 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 01:14:50,321 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 [2023-02-16 01:14:50,323 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:50,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 01:14:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-02-16 01:14:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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) [2023-02-16 01:14:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-02-16 01:14:50,327 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 17 [2023-02-16 01:14:50,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:50,327 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-02-16 01:14:50,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-02-16 01:14:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-02-16 01:14:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 01:14:50,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:50,329 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] [2023-02-16 01:14:50,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 01:14:50,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash -792194438, now seen corresponding path program 1 times [2023-02-16 01:14:50,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:50,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209257100] [2023-02-16 01:14:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:50,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209257100] [2023-02-16 01:14:50,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209257100] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:14:50,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:14:50,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:14:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500998765] [2023-02-16 01:14:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:14:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:14:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:14:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:14:50,417 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-02-16 01:14:50,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:50,462 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2023-02-16 01:14:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:14:50,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-02-16 01:14:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:50,464 INFO L225 Difference]: With dead ends: 48 [2023-02-16 01:14:50,464 INFO L226 Difference]: Without dead ends: 41 [2023-02-16 01:14:50,465 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 [2023-02-16 01:14:50,471 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:50,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-16 01:14:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2023-02-16 01:14:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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) [2023-02-16 01:14:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-02-16 01:14:50,483 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2023-02-16 01:14:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:50,483 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-02-16 01:14:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-02-16 01:14:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-02-16 01:14:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 01:14:50,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:50,485 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] [2023-02-16 01:14:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 01:14:50,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1624635408, now seen corresponding path program 1 times [2023-02-16 01:14:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656210440] [2023-02-16 01:14:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:50,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656210440] [2023-02-16 01:14:50,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656210440] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069521214] [2023-02-16 01:14:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:50,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:50,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:50,580 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) [2023-02-16 01:14:50,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:14:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:50,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 01:14:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:14:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:50,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:14:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:50,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069521214] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:14:50,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:14:50,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-02-16 01:14:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451739698] [2023-02-16 01:14:50,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:14:50,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 01:14:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 01:14:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-16 01:14:50,780 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2023-02-16 01:14:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:50,824 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2023-02-16 01:14:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:14:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) Word has length 23 [2023-02-16 01:14:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:50,825 INFO L225 Difference]: With dead ends: 55 [2023-02-16 01:14:50,825 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 01:14:50,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-16 01:14:50,828 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:50,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 33 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 01:14:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-16 01:14:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2023-02-16 01:14:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-02-16 01:14:50,838 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 23 [2023-02-16 01:14:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:50,838 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-02-16 01:14:50,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2023-02-16 01:14:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-02-16 01:14:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 01:14:50,839 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:50,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:50,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:14:51,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-16 01:14:51,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash 55827240, now seen corresponding path program 2 times [2023-02-16 01:14:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:51,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441083478] [2023-02-16 01:14:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 01:14:51,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:51,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441083478] [2023-02-16 01:14:51,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441083478] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:51,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537270389] [2023-02-16 01:14:51,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:14:51,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:51,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:51,149 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) [2023-02-16 01:14:51,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:14:51,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:14:51,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:14:51,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 01:14:51,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:14:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 01:14:51,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:14:51,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537270389] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:14:51,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:14:51,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-16 01:14:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985624442] [2023-02-16 01:14:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:14:51,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:14:51,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:14:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:14:51,301 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2023-02-16 01:14:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:51,341 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2023-02-16 01:14:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:14:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 32 [2023-02-16 01:14:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:51,346 INFO L225 Difference]: With dead ends: 76 [2023-02-16 01:14:51,346 INFO L226 Difference]: Without dead ends: 48 [2023-02-16 01:14:51,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:14:51,351 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:51,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-16 01:14:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2023-02-16 01:14:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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) [2023-02-16 01:14:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-02-16 01:14:51,361 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 32 [2023-02-16 01:14:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:51,361 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-02-16 01:14:51,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2023-02-16 01:14:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-02-16 01:14:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 01:14:51,362 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:51,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:51,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 01:14:51,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-02-16 01:14:51,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1789747366, now seen corresponding path program 1 times [2023-02-16 01:14:51,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:51,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858384384] [2023-02-16 01:14:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:51,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:51,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858384384] [2023-02-16 01:14:51,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858384384] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:51,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350059018] [2023-02-16 01:14:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:51,707 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) [2023-02-16 01:14:51,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:14:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:51,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 01:14:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:14:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:51,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:14:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:14:51,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350059018] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:14:51,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:14:51,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-16 01:14:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085584578] [2023-02-16 01:14:51,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:14:51,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 01:14:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 01:14:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:14:51,912 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2023-02-16 01:14:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:51,959 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2023-02-16 01:14:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 01:14:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 32 [2023-02-16 01:14:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:51,960 INFO L225 Difference]: With dead ends: 60 [2023-02-16 01:14:51,960 INFO L226 Difference]: Without dead ends: 40 [2023-02-16 01:14:51,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:14:51,962 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:51,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 46 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-16 01:14:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-02-16 01:14:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 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) [2023-02-16 01:14:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-16 01:14:51,973 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 32 [2023-02-16 01:14:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:51,973 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-16 01:14:51,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2023-02-16 01:14:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-16 01:14:51,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 01:14:51,976 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:51,976 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:51,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:14:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:52,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1014530160, now seen corresponding path program 2 times [2023-02-16 01:14:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:52,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397125450] [2023-02-16 01:14:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:52,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 01:14:52,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:52,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397125450] [2023-02-16 01:14:52,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397125450] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:52,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503395992] [2023-02-16 01:14:52,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:14:52,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:52,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:52,358 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) [2023-02-16 01:14:52,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:14:52,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:14:52,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:14:52,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 01:14:52,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:14:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 01:14:52,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:14:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 01:14:52,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503395992] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:14:52,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:14:52,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-02-16 01:14:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282370799] [2023-02-16 01:14:52,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:14:52,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 01:14:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 01:14:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-02-16 01:14:52,587 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2023-02-16 01:14:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:52,648 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-02-16 01:14:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:14:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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 35 [2023-02-16 01:14:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:52,650 INFO L225 Difference]: With dead ends: 65 [2023-02-16 01:14:52,650 INFO L226 Difference]: Without dead ends: 47 [2023-02-16 01:14:52,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:14:52,650 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:52,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 103 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:14:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-16 01:14:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-02-16 01:14:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 states have internal predecessors, (56), 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) [2023-02-16 01:14:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2023-02-16 01:14:52,659 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 35 [2023-02-16 01:14:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:52,660 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2023-02-16 01:14:52,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2023-02-16 01:14:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-02-16 01:14:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 01:14:52,662 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:52,662 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:52,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:14:52,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:52,869 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1632294897, now seen corresponding path program 3 times [2023-02-16 01:14:52,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:52,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416078744] [2023-02-16 01:14:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 01:14:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:53,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416078744] [2023-02-16 01:14:53,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416078744] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:53,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798857085] [2023-02-16 01:14:53,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 01:14:53,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:53,037 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) [2023-02-16 01:14:53,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:14:53,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-16 01:14:53,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:14:53,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 01:14:53,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:14:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-02-16 01:14:53,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:14:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-02-16 01:14:53,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798857085] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:14:53,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:14:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-02-16 01:14:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372457464] [2023-02-16 01:14:53,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:14:53,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 01:14:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 01:14:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:14:53,270 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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) [2023-02-16 01:14:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:53,644 INFO L93 Difference]: Finished difference Result 171 states and 220 transitions. [2023-02-16 01:14:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 01:14:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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 44 [2023-02-16 01:14:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:53,645 INFO L225 Difference]: With dead ends: 171 [2023-02-16 01:14:53,646 INFO L226 Difference]: Without dead ends: 144 [2023-02-16 01:14:53,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=506, Invalid=976, Unknown=0, NotChecked=0, Total=1482 [2023-02-16 01:14:53,646 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 462 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:53,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 64 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:14:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-16 01:14:53,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 107. [2023-02-16 01:14:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2735849056603774) internal successors, (135), 106 states have internal predecessors, (135), 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) [2023-02-16 01:14:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 135 transitions. [2023-02-16 01:14:53,657 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 135 transitions. Word has length 44 [2023-02-16 01:14:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:53,657 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 135 transitions. [2023-02-16 01:14:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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) [2023-02-16 01:14:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 135 transitions. [2023-02-16 01:14:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-16 01:14:53,661 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:53,661 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:53,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:14:53,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 01:14:53,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:53,868 INFO L85 PathProgramCache]: Analyzing trace with hash -919071665, now seen corresponding path program 4 times [2023-02-16 01:14:53,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:53,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731198490] [2023-02-16 01:14:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:53,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 262 proven. 35 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-02-16 01:14:54,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:54,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731198490] [2023-02-16 01:14:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731198490] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:54,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728733715] [2023-02-16 01:14:54,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 01:14:54,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:54,139 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:14:54,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:14:54,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 01:14:54,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:14:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 01:14:54,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:14:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 26 proven. 228 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-02-16 01:14:54,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:14:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 26 proven. 228 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-02-16 01:14:54,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728733715] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:14:54,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:14:54,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2023-02-16 01:14:54,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036261231] [2023-02-16 01:14:54,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:14:54,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 01:14:54,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:14:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 01:14:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-02-16 01:14:54,616 INFO L87 Difference]: Start difference. First operand 107 states and 135 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 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) [2023-02-16 01:14:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:14:55,457 INFO L93 Difference]: Finished difference Result 322 states and 416 transitions. [2023-02-16 01:14:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-02-16 01:14:55,458 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 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 104 [2023-02-16 01:14:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:14:55,458 INFO L225 Difference]: With dead ends: 322 [2023-02-16 01:14:55,458 INFO L226 Difference]: Without dead ends: 251 [2023-02-16 01:14:55,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1347, Invalid=4659, Unknown=0, NotChecked=0, Total=6006 [2023-02-16 01:14:55,460 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1066 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:14:55,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 125 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:14:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-16 01:14:55,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 131. [2023-02-16 01:14:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2538461538461538) internal successors, (163), 130 states have internal predecessors, (163), 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) [2023-02-16 01:14:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2023-02-16 01:14:55,470 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 104 [2023-02-16 01:14:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:14:55,470 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2023-02-16 01:14:55,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 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) [2023-02-16 01:14:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2023-02-16 01:14:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-02-16 01:14:55,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:14:55,472 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 6, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:14:55,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 01:14:55,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:55,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:14:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:14:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash 964759091, now seen corresponding path program 5 times [2023-02-16 01:14:55,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:14:55,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142837933] [2023-02-16 01:14:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:14:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:14:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:14:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 367 proven. 51 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2023-02-16 01:14:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:14:55,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142837933] [2023-02-16 01:14:55,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142837933] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:14:55,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675597326] [2023-02-16 01:14:55,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 01:14:55,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:14:55,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:14:55,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:14:55,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process