./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.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 860bc4cce2f799c86d6f50223334fb7e75a2513f716d902687ae93b4a9d6cb3b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:26:34,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:26:34,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:26:34,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:26:34,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:26:34,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:26:34,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:26:34,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:26:34,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:26:34,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:26:34,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:26:34,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:26:34,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:26:34,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:26:34,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:26:34,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:26:34,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:26:34,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:26:34,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:26:34,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:26:34,308 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:26:34,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:26:34,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:26:34,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:26:34,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:26:34,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:26:34,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:26:34,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:26:34,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:26:34,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:26:34,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:26:34,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:26:34,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:26:34,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:26:34,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:26:34,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:26:34,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:26:34,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:26:34,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:26:34,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:26:34,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:26:34,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:26:34,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:26:34,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:26:34,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:26:34,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:26:34,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:26:34,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:26:34,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:26:34,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:26:34,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:26:34,347 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:26:34,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:26:34,348 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:26:34,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:26:34,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:26:34,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:26:34,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:26:34,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:26:34,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:26:34,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:26:34,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:26:34,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:26:34,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:26:34,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:26:34,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:26:34,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:26:34,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:26:34,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:26:34,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:26:34,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860bc4cce2f799c86d6f50223334fb7e75a2513f716d902687ae93b4a9d6cb3b [2022-07-19 19:26:34,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:26:34,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:26:34,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:26:34,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:26:34,600 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:26:34,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c [2022-07-19 19:26:34,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e46030b/3b13d66a076a45d895516c9004af97e0/FLAG1a5052073 [2022-07-19 19:26:35,459 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:26:35,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c [2022-07-19 19:26:35,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e46030b/3b13d66a076a45d895516c9004af97e0/FLAG1a5052073 [2022-07-19 19:26:35,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e46030b/3b13d66a076a45d895516c9004af97e0 [2022-07-19 19:26:35,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:26:35,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:26:35,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:26:35,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:26:35,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:26:35,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:26:35" (1/1) ... [2022-07-19 19:26:35,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3204deed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:35, skipping insertion in model container [2022-07-19 19:26:35,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:26:35" (1/1) ... [2022-07-19 19:26:35,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:26:35,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:26:37,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c[382357,382370] [2022-07-19 19:26:37,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c[383339,383352] [2022-07-19 19:26:37,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:26:37,346 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:26:37,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c[382357,382370] [2022-07-19 19:26:37,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-1.c[383339,383352] [2022-07-19 19:26:37,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:26:37,989 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:26:37,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37 WrapperNode [2022-07-19 19:26:37,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:26:37,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:26:37,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:26:37,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:26:37,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,329 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2022-07-19 19:26:38,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:26:38,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:26:38,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:26:38,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:26:38,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:26:38,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:26:38,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:26:38,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:26:38,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (1/1) ... [2022-07-19 19:26:38,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:26:38,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:26:38,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:26:38,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:26:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:26:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:26:38,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:26:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:26:38,848 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:26:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:26:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:26:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-19 19:26:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-19 19:26:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:26:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:26:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:26:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:26:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:26:38,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:26:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:26:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:26:38,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:26:38,986 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:26:38,987 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:26:43,609 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:26:43,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:26:43,630 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-19 19:26:43,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:26:43 BoogieIcfgContainer [2022-07-19 19:26:43,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:26:43,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:26:43,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:26:43,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:26:43,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:26:35" (1/3) ... [2022-07-19 19:26:43,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b655f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:26:43, skipping insertion in model container [2022-07-19 19:26:43,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:26:37" (2/3) ... [2022-07-19 19:26:43,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b655f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:26:43, skipping insertion in model container [2022-07-19 19:26:43,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:26:43" (3/3) ... [2022-07-19 19:26:43,639 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.06.cil-1.c [2022-07-19 19:26:43,649 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:26:43,649 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:26:43,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:26:43,712 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61af131b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a310079 [2022-07-19 19:26:43,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:26:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-19 19:26:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:43,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:43,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:43,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2022-07-19 19:26:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:43,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267277106] [2022-07-19 19:26:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:43,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:43,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267277106] [2022-07-19 19:26:43,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267277106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:43,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:43,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:26:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266793836] [2022-07-19 19:26:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:43,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:26:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:26:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:26:44,013 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:44,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:44,875 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2022-07-19 19:26:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:26:44,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:44,892 INFO L225 Difference]: With dead ends: 4911 [2022-07-19 19:26:44,892 INFO L226 Difference]: Without dead ends: 2431 [2022-07-19 19:26:44,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:26:44,899 INFO L413 NwaCegarLoop]: 4417 mSDtfsCounter, 596 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 16744 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:44,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 16744 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:26:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-07-19 19:26:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2022-07-19 19:26:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 19:26:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2022-07-19 19:26:44,975 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2022-07-19 19:26:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:44,975 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2022-07-19 19:26:44,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2022-07-19 19:26:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:44,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:44,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:44,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:26:44,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:44,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2022-07-19 19:26:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:44,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825392720] [2022-07-19 19:26:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:45,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825392720] [2022-07-19 19:26:45,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825392720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:45,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:45,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:45,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270550290] [2022-07-19 19:26:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:45,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:45,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:45,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:45,105 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:46,625 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2022-07-19 19:26:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:26:46,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:46,636 INFO L225 Difference]: With dead ends: 2966 [2022-07-19 19:26:46,636 INFO L226 Difference]: Without dead ends: 2746 [2022-07-19 19:26:46,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:26:46,639 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 4790 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 21585 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:46,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 21585 Invalid, 1950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:26:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-07-19 19:26:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2022-07-19 19:26:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-19 19:26:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2022-07-19 19:26:46,689 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2022-07-19 19:26:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:46,690 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2022-07-19 19:26:46,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2022-07-19 19:26:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:46,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:46,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:46,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:26:46,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2022-07-19 19:26:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597240473] [2022-07-19 19:26:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:46,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597240473] [2022-07-19 19:26:46,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597240473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:46,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:46,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873737725] [2022-07-19 19:26:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:46,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:46,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:46,780 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:48,277 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2022-07-19 19:26:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:26:48,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:48,292 INFO L225 Difference]: With dead ends: 3740 [2022-07-19 19:26:48,292 INFO L226 Difference]: Without dead ends: 3294 [2022-07-19 19:26:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:26:48,303 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 4814 mSDsluCounter, 16958 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:48,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4827 Valid, 21469 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:26:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2022-07-19 19:26:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2022-07-19 19:26:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-07-19 19:26:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2022-07-19 19:26:48,423 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2022-07-19 19:26:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:48,423 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2022-07-19 19:26:48,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2022-07-19 19:26:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:48,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:48,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:48,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:26:48,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:48,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2022-07-19 19:26:48,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:48,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843201950] [2022-07-19 19:26:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:48,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:48,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:48,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843201950] [2022-07-19 19:26:48,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843201950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:48,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:48,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51858759] [2022-07-19 19:26:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:48,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:48,505 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:49,993 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2022-07-19 19:26:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:26:49,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:50,011 INFO L225 Difference]: With dead ends: 5254 [2022-07-19 19:26:50,011 INFO L226 Difference]: Without dead ends: 4388 [2022-07-19 19:26:50,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:26:50,017 INFO L413 NwaCegarLoop]: 4555 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21576 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:50,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21576 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:26:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-07-19 19:26:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2022-07-19 19:26:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-07-19 19:26:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2022-07-19 19:26:50,118 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2022-07-19 19:26:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:50,119 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2022-07-19 19:26:50,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2022-07-19 19:26:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:50,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:50,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:50,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:26:50,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2022-07-19 19:26:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:50,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306574359] [2022-07-19 19:26:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:50,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:50,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306574359] [2022-07-19 19:26:50,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306574359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:50,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:50,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819209381] [2022-07-19 19:26:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:50,236 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:51,755 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2022-07-19 19:26:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:26:51,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:51,781 INFO L225 Difference]: With dead ends: 8280 [2022-07-19 19:26:51,781 INFO L226 Difference]: Without dead ends: 6572 [2022-07-19 19:26:51,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:26:51,790 INFO L413 NwaCegarLoop]: 4552 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21573 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:51,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21573 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:26:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2022-07-19 19:26:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2022-07-19 19:26:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-07-19 19:26:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2022-07-19 19:26:51,959 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2022-07-19 19:26:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:51,959 INFO L495 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2022-07-19 19:26:51,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2022-07-19 19:26:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:51,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:51,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:51,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:26:51,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2022-07-19 19:26:51,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:51,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419649592] [2022-07-19 19:26:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:51,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:51,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:52,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:52,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419649592] [2022-07-19 19:26:52,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419649592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:52,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:52,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867018312] [2022-07-19 19:26:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:52,064 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:53,799 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2022-07-19 19:26:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:26:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:53,836 INFO L225 Difference]: With dead ends: 14330 [2022-07-19 19:26:53,836 INFO L226 Difference]: Without dead ends: 10932 [2022-07-19 19:26:53,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:26:53,851 INFO L413 NwaCegarLoop]: 4549 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21570 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:53,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21570 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:26:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2022-07-19 19:26:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2022-07-19 19:26:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-07-19 19:26:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2022-07-19 19:26:54,202 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2022-07-19 19:26:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:54,203 INFO L495 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2022-07-19 19:26:54,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2022-07-19 19:26:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:54,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:54,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:54,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:26:54,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2022-07-19 19:26:54,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:54,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617759605] [2022-07-19 19:26:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:54,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617759605] [2022-07-19 19:26:54,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617759605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:54,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:54,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:54,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523915953] [2022-07-19 19:26:54,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:54,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:54,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:54,297 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:26:56,227 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2022-07-19 19:26:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:26:56,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:26:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:26:56,310 INFO L225 Difference]: With dead ends: 26428 [2022-07-19 19:26:56,311 INFO L226 Difference]: Without dead ends: 19636 [2022-07-19 19:26:56,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:26:56,345 INFO L413 NwaCegarLoop]: 4546 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21567 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:26:56,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21567 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:26:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2022-07-19 19:26:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2022-07-19 19:26:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-07-19 19:26:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2022-07-19 19:26:57,055 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2022-07-19 19:26:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:26:57,056 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2022-07-19 19:26:57,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:26:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2022-07-19 19:26:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:26:57,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:26:57,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:26:57,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:26:57,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:26:57,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:26:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2022-07-19 19:26:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:26:57,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141342852] [2022-07-19 19:26:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:26:57,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:26:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:26:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:26:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:26:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:26:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:26:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:26:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:26:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:26:57,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141342852] [2022-07-19 19:26:57,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141342852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:26:57,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:26:57,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:26:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720841957] [2022-07-19 19:26:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:26:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:26:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:26:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:26:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:26:57,181 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:27:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:00,344 INFO L93 Difference]: Finished difference Result 56574 states and 91179 transitions. [2022-07-19 19:27:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:27:00,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:27:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:00,474 INFO L225 Difference]: With dead ends: 56574 [2022-07-19 19:27:00,475 INFO L226 Difference]: Without dead ends: 42964 [2022-07-19 19:27:00,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:27:00,526 INFO L413 NwaCegarLoop]: 4539 mSDtfsCounter, 5044 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5064 SdHoareTripleChecker+Valid, 21552 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:00,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5064 Valid, 21552 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:27:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42964 states. [2022-07-19 19:27:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42964 to 29253. [2022-07-19 19:27:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29253 states, 26490 states have (on average 1.575839939599849) internal successors, (41744), 26621 states have internal predecessors, (41744), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-07-19 19:27:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 47915 transitions. [2022-07-19 19:27:02,033 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 47915 transitions. Word has length 113 [2022-07-19 19:27:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:02,034 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 47915 transitions. [2022-07-19 19:27:02,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:27:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 47915 transitions. [2022-07-19 19:27:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:27:02,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:02,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:27:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:27:02,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2022-07-19 19:27:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:02,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945869276] [2022-07-19 19:27:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:27:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:27:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:27:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:27:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:27:02,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945869276] [2022-07-19 19:27:02,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945869276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:02,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:02,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:27:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165249343] [2022-07-19 19:27:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:27:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:27:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:27:02,135 INFO L87 Difference]: Start difference. First operand 29253 states and 47915 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:27:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:07,246 INFO L93 Difference]: Finished difference Result 107011 states and 175039 transitions. [2022-07-19 19:27:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:27:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:27:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:07,569 INFO L225 Difference]: With dead ends: 107011 [2022-07-19 19:27:07,570 INFO L226 Difference]: Without dead ends: 79895 [2022-07-19 19:27:07,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:27:07,664 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 4978 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4998 SdHoareTripleChecker+Valid, 21544 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:07,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4998 Valid, 21544 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:27:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2022-07-19 19:27:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 56327. [2022-07-19 19:27:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56327 states, 50940 states have (on average 1.5670985473105614) internal successors, (79828), 51199 states have internal predecessors, (79828), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-07-19 19:27:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 94085 transitions. [2022-07-19 19:27:10,455 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 94085 transitions. Word has length 113 [2022-07-19 19:27:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:10,455 INFO L495 AbstractCegarLoop]: Abstraction has 56327 states and 94085 transitions. [2022-07-19 19:27:10,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:27:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 94085 transitions. [2022-07-19 19:27:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:27:10,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:10,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:27:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:27:10,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2022-07-19 19:27:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:10,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127147474] [2022-07-19 19:27:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:27:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:27:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:27:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:27:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:27:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127147474] [2022-07-19 19:27:10,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127147474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:10,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:10,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:27:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663980724] [2022-07-19 19:27:10,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:10,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:27:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:27:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:27:10,573 INFO L87 Difference]: Start difference. First operand 56327 states and 94085 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:27:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:20,275 INFO L93 Difference]: Finished difference Result 207177 states and 347363 transitions. [2022-07-19 19:27:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:27:20,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-19 19:27:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:21,237 INFO L225 Difference]: With dead ends: 207177 [2022-07-19 19:27:21,238 INFO L226 Difference]: Without dead ends: 152987 [2022-07-19 19:27:21,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:27:21,359 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 4951 mSDsluCounter, 16953 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4971 SdHoareTripleChecker+Valid, 21449 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:21,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4971 Valid, 21449 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:27:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152987 states. [2022-07-19 19:27:27,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152987 to 110347. [2022-07-19 19:27:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110347 states, 99840 states have (on average 1.563741987179487) internal successors, (156124), 100355 states have internal predecessors, (156124), 6921 states have call successors, (6921), 3073 states have call predecessors, (6921), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2022-07-19 19:27:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110347 states to 110347 states and 190671 transitions. [2022-07-19 19:27:28,247 INFO L78 Accepts]: Start accepts. Automaton has 110347 states and 190671 transitions. Word has length 113 [2022-07-19 19:27:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:28,248 INFO L495 AbstractCegarLoop]: Abstraction has 110347 states and 190671 transitions. [2022-07-19 19:27:28,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:27:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 110347 states and 190671 transitions. [2022-07-19 19:27:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 19:27:28,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:28,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:27:28,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:27:28,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1374174658, now seen corresponding path program 1 times [2022-07-19 19:27:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:28,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130688884] [2022-07-19 19:27:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:28,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 19:27:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 19:27:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 19:27:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:27:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:27:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:28,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130688884] [2022-07-19 19:27:28,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130688884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:28,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:28,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:27:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450837961] [2022-07-19 19:27:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:28,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:27:28,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:27:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:27:28,402 INFO L87 Difference]: Start difference. First operand 110347 states and 190671 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)