./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-2.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_label45+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea2a15ada4a316287b701d4046ee75147e37e2af1b0a94d8406d231cafa83990 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:24:02,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:24:02,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:24:02,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:24:02,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:24:02,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:24:02,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:24:02,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:24:02,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:24:02,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:24:02,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:24:02,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:24:02,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:24:02,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:24:02,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:24:02,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:24:02,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:24:02,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:24:02,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:24:02,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:24:02,378 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:24:02,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:24:02,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:24:02,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:24:02,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:24:02,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:24:02,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:24:02,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:24:02,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:24:02,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:24:02,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:24:02,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:24:02,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:24:02,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:24:02,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:24:02,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:24:02,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:24:02,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:24:02,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:24:02,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:24:02,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:24:02,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:24:02,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:24:02,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:24:02,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:24:02,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:24:02,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:24:02,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:24:02,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:24:02,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:24:02,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:24:02,424 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:24:02,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:24:02,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:24:02,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:24:02,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:24:02,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:24:02,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:24:02,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:24:02,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:24:02,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:24:02,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:24:02,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:24:02,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:24:02,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:24:02,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:24:02,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:24:02,427 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:24:02,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:24:02,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:24:02,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea2a15ada4a316287b701d4046ee75147e37e2af1b0a94d8406d231cafa83990 [2022-07-19 19:24:02,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:24:02,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:24:02,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:24:02,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:24:02,652 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:24:02,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-2.c [2022-07-19 19:24:02,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5733070c/0fef7e13e42c4dadbd84e98f51360430/FLAG173b4412b [2022-07-19 19:24:03,423 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:24:03,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-2.c [2022-07-19 19:24:03,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5733070c/0fef7e13e42c4dadbd84e98f51360430/FLAG173b4412b [2022-07-19 19:24:03,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5733070c/0fef7e13e42c4dadbd84e98f51360430 [2022-07-19 19:24:03,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:24:03,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:24:03,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:24:03,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:24:03,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:24:03,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:24:03" (1/1) ... [2022-07-19 19:24:03,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c23e9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:03, skipping insertion in model container [2022-07-19 19:24:03,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:24:03" (1/1) ... [2022-07-19 19:24:03,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:24:03,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:24:05,048 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_label45+token_ring.07.cil-2.c[380323,380336] [2022-07-19 19:24:05,067 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_label45+token_ring.07.cil-2.c[383339,383352] [2022-07-19 19:24:05,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:24:05,223 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:24:05,810 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_label45+token_ring.07.cil-2.c[380323,380336] [2022-07-19 19:24:05,815 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_label45+token_ring.07.cil-2.c[383339,383352] [2022-07-19 19:24:05,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:24:05,871 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:24:05,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05 WrapperNode [2022-07-19 19:24:05,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:24:05,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:24:05,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:24:05,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:24:05,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:05,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,278 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-07-19 19:24:06,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:24:06,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:24:06,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:24:06,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:24:06,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:24:06,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:24:06,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:24:06,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:24:06,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (1/1) ... [2022-07-19 19:24:06,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:24:06,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:24:06,897 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 19:24:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:24:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:24:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:24:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:24:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:24:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:24:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:24:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-19 19:24:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-19 19:24:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:24:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:24:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:24:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:24:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:24:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:24:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:24:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:24:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:24:07,011 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 19:24:07,186 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:24:07,187 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:24:11,813 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:24:11,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:24:11,832 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-19 19:24:11,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:24:11 BoogieIcfgContainer [2022-07-19 19:24:11,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:24:11,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:24:11,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:24:11,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:24:11,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:24:03" (1/3) ... [2022-07-19 19:24:11,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bfd2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:24:11, skipping insertion in model container [2022-07-19 19:24:11,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:24:05" (2/3) ... [2022-07-19 19:24:11,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bfd2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:24:11, skipping insertion in model container [2022-07-19 19:24:11,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:24:11" (3/3) ... [2022-07-19 19:24:11,841 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.07.cil-2.c [2022-07-19 19:24:11,850 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:24:11,851 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:24:11,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:24:11,913 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@237e1e4f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c90c442 [2022-07-19 19:24:11,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:24:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 19:24:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:11,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:11,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:11,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2022-07-19 19:24:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:11,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984989152] [2022-07-19 19:24:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:12,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:12,234 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 19:24:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:12,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984989152] [2022-07-19 19:24:12,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984989152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:12,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:12,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:24:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275558128] [2022-07-19 19:24:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:12,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:24:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:24:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:24:12,272 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 19:24:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:13,161 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2022-07-19 19:24:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:24:13,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:13,182 INFO L225 Difference]: With dead ends: 4970 [2022-07-19 19:24:13,182 INFO L226 Difference]: Without dead ends: 2467 [2022-07-19 19:24:13,191 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 19:24:13,194 INFO L413 NwaCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16818 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:13,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 16818 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 19:24:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-07-19 19:24:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2022-07-19 19:24:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-19 19:24:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2022-07-19 19:24:13,299 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2022-07-19 19:24:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:13,300 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2022-07-19 19:24:13,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 19:24:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2022-07-19 19:24:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:13,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:13,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:13,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:24:13,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2022-07-19 19:24:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:13,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220002243] [2022-07-19 19:24:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:13,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:13,439 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 19:24:13,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:13,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220002243] [2022-07-19 19:24:13,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220002243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:13,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:13,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:24:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896343648] [2022-07-19 19:24:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:13,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:24:13,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:24:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:24:13,443 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 19:24:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:14,935 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2022-07-19 19:24:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:24:14,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:14,945 INFO L225 Difference]: With dead ends: 3050 [2022-07-19 19:24:14,946 INFO L226 Difference]: Without dead ends: 2806 [2022-07-19 19:24:14,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:24:14,948 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 16969 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:14,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 16969 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:24:14,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-19 19:24:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2022-07-19 19:24:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-19 19:24:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2022-07-19 19:24:15,009 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2022-07-19 19:24:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:15,010 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2022-07-19 19:24:15,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 19:24:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2022-07-19 19:24:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:15,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:15,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:15,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:24:15,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:15,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2022-07-19 19:24:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:15,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723542616] [2022-07-19 19:24:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:15,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,124 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 19:24:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723542616] [2022-07-19 19:24:15,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723542616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:15,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156861748] [2022-07-19 19:24:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:15,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:15,127 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:16,944 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2022-07-19 19:24:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:24:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:16,956 INFO L225 Difference]: With dead ends: 3648 [2022-07-19 19:24:16,957 INFO L226 Difference]: Without dead ends: 3153 [2022-07-19 19:24:16,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:24:16,966 INFO L413 NwaCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21778 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:16,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4972 Valid, 21778 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 19:24:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-07-19 19:24:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2022-07-19 19:24:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-19 19:24:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2022-07-19 19:24:17,050 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2022-07-19 19:24:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:17,051 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2022-07-19 19:24:17,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2022-07-19 19:24:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:17,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:17,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:17,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:24:17,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2022-07-19 19:24:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:17,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553221172] [2022-07-19 19:24:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,198 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 19:24:17,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:17,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553221172] [2022-07-19 19:24:17,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553221172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:17,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:17,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:17,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574647649] [2022-07-19 19:24:17,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:17,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:17,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:17,201 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:18,988 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2022-07-19 19:24:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:24:18,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:19,001 INFO L225 Difference]: With dead ends: 4529 [2022-07-19 19:24:19,002 INFO L226 Difference]: Without dead ends: 3800 [2022-07-19 19:24:19,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:24:19,006 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21770 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:19,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4969 Valid, 21770 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 19:24:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-07-19 19:24:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2022-07-19 19:24:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-19 19:24:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2022-07-19 19:24:19,103 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2022-07-19 19:24:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:19,108 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2022-07-19 19:24:19,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2022-07-19 19:24:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:19,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:19,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:19,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:24:19,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2022-07-19 19:24:19,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:19,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673016886] [2022-07-19 19:24:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:19,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:19,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:19,226 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 19:24:19,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:19,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673016886] [2022-07-19 19:24:19,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673016886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:19,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:19,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978680716] [2022-07-19 19:24:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:19,229 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:21,040 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2022-07-19 19:24:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:24:21,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:21,057 INFO L225 Difference]: With dead ends: 6226 [2022-07-19 19:24:21,058 INFO L226 Difference]: Without dead ends: 5028 [2022-07-19 19:24:21,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:24:21,065 INFO L413 NwaCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:21,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 21766 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 19:24:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-07-19 19:24:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2022-07-19 19:24:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-19 19:24:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2022-07-19 19:24:21,208 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2022-07-19 19:24:21,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:21,209 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2022-07-19 19:24:21,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2022-07-19 19:24:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:21,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:21,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:21,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:24:21,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:21,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2022-07-19 19:24:21,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:21,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065726309] [2022-07-19 19:24:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:21,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:21,372 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 19:24:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:21,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065726309] [2022-07-19 19:24:21,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065726309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:21,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:21,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:21,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626361944] [2022-07-19 19:24:21,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:21,375 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:23,217 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2022-07-19 19:24:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:24:23,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:23,247 INFO L225 Difference]: With dead ends: 9619 [2022-07-19 19:24:23,247 INFO L226 Difference]: Without dead ends: 7482 [2022-07-19 19:24:23,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:24:23,258 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21762 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:23,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 21762 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 19:24:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-07-19 19:24:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2022-07-19 19:24:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-19 19:24:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2022-07-19 19:24:23,479 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2022-07-19 19:24:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:23,480 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2022-07-19 19:24:23,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2022-07-19 19:24:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:23,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:23,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:23,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:24:23,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2022-07-19 19:24:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432644552] [2022-07-19 19:24:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:23,578 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 19:24:23,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:23,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432644552] [2022-07-19 19:24:23,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432644552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:23,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:23,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011278878] [2022-07-19 19:24:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:23,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:23,580 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:25,758 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2022-07-19 19:24:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:24:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:25,824 INFO L225 Difference]: With dead ends: 16404 [2022-07-19 19:24:25,825 INFO L226 Difference]: Without dead ends: 12384 [2022-07-19 19:24:25,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:24:25,848 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21756 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:25,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 21756 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 19:24:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-07-19 19:24:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2022-07-19 19:24:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-19 19:24:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2022-07-19 19:24:26,394 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2022-07-19 19:24:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:26,395 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2022-07-19 19:24:26,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2022-07-19 19:24:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:26,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:26,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:26,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:24:26,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2022-07-19 19:24:26,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:26,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202774140] [2022-07-19 19:24:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:26,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:26,554 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 19:24:26,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:26,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202774140] [2022-07-19 19:24:26,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202774140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:26,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:26,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202949046] [2022-07-19 19:24:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:26,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:26,557 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:27,808 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2022-07-19 19:24:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:24:27,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:27,856 INFO L225 Difference]: With dead ends: 20276 [2022-07-19 19:24:27,856 INFO L226 Difference]: Without dead ends: 12477 [2022-07-19 19:24:27,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:24:27,880 INFO L413 NwaCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12383 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16745 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4806 Valid, 16745 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 19:24:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2022-07-19 19:24:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2022-07-19 19:24:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-19 19:24:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2022-07-19 19:24:28,276 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2022-07-19 19:24:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:28,276 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2022-07-19 19:24:28,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2022-07-19 19:24:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:28,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:28,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:24:28,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2022-07-19 19:24:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:28,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088196897] [2022-07-19 19:24:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:28,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:28,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:28,364 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 19:24:28,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:28,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088196897] [2022-07-19 19:24:28,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088196897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:28,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:28,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:28,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535574331] [2022-07-19 19:24:28,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:28,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:28,366 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:31,292 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2022-07-19 19:24:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:24:31,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:31,372 INFO L225 Difference]: With dead ends: 33332 [2022-07-19 19:24:31,373 INFO L226 Difference]: Without dead ends: 25533 [2022-07-19 19:24:31,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:24:31,404 INFO L413 NwaCegarLoop]: 4593 mSDtfsCounter, 5225 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 21732 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:31,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5247 Valid, 21732 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 19:24:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2022-07-19 19:24:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2022-07-19 19:24:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17492 states, 16021 states have (on average 1.586480244678859) internal successors, (25417), 16088 states have internal predecessors, (25417), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-07-19 19:24:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2022-07-19 19:24:32,290 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2022-07-19 19:24:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:32,291 INFO L495 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2022-07-19 19:24:32,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2022-07-19 19:24:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:32,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:32,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:32,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:24:32,300 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:32,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:32,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2022-07-19 19:24:32,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:32,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371869605] [2022-07-19 19:24:32,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:32,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:32,391 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 19:24:32,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:32,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371869605] [2022-07-19 19:24:32,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371869605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:32,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:32,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:32,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99051193] [2022-07-19 19:24:32,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:32,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:32,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:32,393 INFO L87 Difference]: Start difference. First operand 17492 states and 28238 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:36,967 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2022-07-19 19:24:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:24:36,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:37,139 INFO L225 Difference]: With dead ends: 62843 [2022-07-19 19:24:37,140 INFO L226 Difference]: Without dead ends: 47487 [2022-07-19 19:24:37,183 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 19:24:37,184 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 4995 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:37,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 21831 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 19:24:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2022-07-19 19:24:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2022-07-19 19:24:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31929 states, 29082 states have (on average 1.5631318341242004) internal successors, (45459), 29213 states have internal predecessors, (45459), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-07-19 19:24:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2022-07-19 19:24:38,994 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2022-07-19 19:24:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:38,995 INFO L495 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2022-07-19 19:24:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2022-07-19 19:24:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:39,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:39,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:39,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:24:39,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2022-07-19 19:24:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486118241] [2022-07-19 19:24:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:39,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:39,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:39,104 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 19:24:39,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486118241] [2022-07-19 19:24:39,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486118241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:39,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:39,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96747330] [2022-07-19 19:24:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:39,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:39,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:39,107 INFO L87 Difference]: Start difference. First operand 31929 states and 51658 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:46,674 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2022-07-19 19:24:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:24:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:24:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:46,994 INFO L225 Difference]: With dead ends: 118758 [2022-07-19 19:24:46,995 INFO L226 Difference]: Without dead ends: 88965 [2022-07-19 19:24:47,088 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 19:24:47,088 INFO L413 NwaCegarLoop]: 4583 mSDtfsCounter, 5145 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 21722 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:47,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5167 Valid, 21722 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 19:24:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2022-07-19 19:24:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2022-07-19 19:24:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61378 states, 55843 states have (on average 1.553587737048511) internal successors, (86757), 56102 states have internal predecessors, (86757), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-07-19 19:24:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2022-07-19 19:24:51,105 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2022-07-19 19:24:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:51,106 INFO L495 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2022-07-19 19:24:51,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:24:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2022-07-19 19:24:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:24:51,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:51,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:51,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:24:51,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2022-07-19 19:24:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:51,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105547818] [2022-07-19 19:24:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:51,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:24:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:24:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:24:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:51,235 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 19:24:51,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:51,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105547818] [2022-07-19 19:24:51,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105547818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:51,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:51,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938709902] [2022-07-19 19:24:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:51,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:51,237 INFO L87 Difference]: Start difference. First operand 61378 states and 101042 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:25:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:25:05,326 INFO L93 Difference]: Finished difference Result 230013 states and 379509 transitions. [2022-07-19 19:25:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:25:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 19:25:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:25:05,978 INFO L225 Difference]: With dead ends: 230013 [2022-07-19 19:25:05,979 INFO L226 Difference]: Without dead ends: 170771 [2022-07-19 19:25:06,169 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 19:25:06,170 INFO L413 NwaCegarLoop]: 4578 mSDtfsCounter, 5105 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:25:06,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 21717 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 19:25:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170771 states. [2022-07-19 19:25:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170771 to 120147. [2022-07-19 19:25:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120147 states, 109364 states have (on average 1.5496781390585568) internal successors, (169479), 109879 states have internal predecessors, (169479), 7191 states have call successors, (7191), 3079 states have call predecessors, (7191), 3590 states have return successors, (27384), 7700 states have call predecessors, (27384), 7189 states have call successors, (27384) [2022-07-19 19:25:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120147 states to 120147 states and 204054 transitions. [2022-07-19 19:25:14,745 INFO L78 Accepts]: Start accepts. Automaton has 120147 states and 204054 transitions. Word has length 124 [2022-07-19 19:25:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:25:14,745 INFO L495 AbstractCegarLoop]: Abstraction has 120147 states and 204054 transitions. [2022-07-19 19:25:14,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:25:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 120147 states and 204054 transitions. [2022-07-19 19:25:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 19:25:14,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:25:14,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:25:14,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:25:14,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:25:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:25:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2022-07-19 19:25:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:25:14,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845962871] [2022-07-19 19:25:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:25:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:25:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:25:15,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:25:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:25:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 19:25:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:25:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 19:25:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:25:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:25:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:25:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 19:25:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:25:15,089 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 19:25:15,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:25:15,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845962871] [2022-07-19 19:25:15,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845962871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:25:15,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:25:15,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:25:15,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718950315] [2022-07-19 19:25:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:25:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:25:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:25:15,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:25:15,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:25:15,090 INFO L87 Difference]: Start difference. First operand 120147 states and 204054 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)