./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e28c81ffc5a1b93c1edca1581014bee1ba1c062c6df3b7a8a783721ae21bc12 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:16:04,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:16:04,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:16:04,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:16:04,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:16:04,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:16:04,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:16:04,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:16:04,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:16:04,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:16:04,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:16:04,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:16:04,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:16:04,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:16:04,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:16:04,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:16:04,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:16:04,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:16:04,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:16:04,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:16:04,469 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:16:04,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:16:04,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:16:04,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:16:04,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:16:04,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:16:04,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:16:04,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:16:04,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:16:04,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:16:04,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:16:04,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:16:04,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:16:04,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:16:04,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:16:04,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:16:04,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:16:04,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:16:04,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:16:04,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:16:04,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:16:04,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:16:04,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:16:04,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:16:04,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:16:04,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:16:04,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:16:04,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:16:04,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:16:04,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:16:04,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:16:04,515 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:16:04,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:16:04,516 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:16:04,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:16:04,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:16:04,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:16:04,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:16:04,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:16:04,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:16:04,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:16:04,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:16:04,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:16:04,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:16:04,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:16:04,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:16:04,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:16:04,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:16:04,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:16:04,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:16:04,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:16:04,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:16:04,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:16:04,520 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:16:04,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:16:04,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:16:04,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e28c81ffc5a1b93c1edca1581014bee1ba1c062c6df3b7a8a783721ae21bc12 [2022-07-19 19:16:04,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:16:04,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:16:04,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:16:04,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:16:04,738 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:16:04,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c [2022-07-19 19:16:04,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adaf5ed7/fae8d0546ed648fb88109aa3dca7252b/FLAG01a73741c [2022-07-19 19:16:05,482 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:16:05,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c [2022-07-19 19:16:05,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adaf5ed7/fae8d0546ed648fb88109aa3dca7252b/FLAG01a73741c [2022-07-19 19:16:05,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adaf5ed7/fae8d0546ed648fb88109aa3dca7252b [2022-07-19 19:16:05,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:16:05,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:16:05,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:16:05,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:16:05,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:16:05,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:16:05" (1/1) ... [2022-07-19 19:16:05,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f096cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:05, skipping insertion in model container [2022-07-19 19:16:05,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:16:05" (1/1) ... [2022-07-19 19:16:05,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:16:05,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:16:07,251 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_label42+token_ring.02.cil-1.c[378560,378573] [2022-07-19 19:16:07,272 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_label42+token_ring.02.cil-1.c[383339,383352] [2022-07-19 19:16:07,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:16:07,394 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:16:07,967 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_label42+token_ring.02.cil-1.c[378560,378573] [2022-07-19 19:16:07,973 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_label42+token_ring.02.cil-1.c[383339,383352] [2022-07-19 19:16:07,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:16:08,024 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:16:08,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08 WrapperNode [2022-07-19 19:16:08,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:16:08,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:16:08,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:16:08,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:16:08,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,337 INFO L137 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-07-19 19:16:08,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:16:08,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:16:08,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:16:08,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:16:08,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:16:08,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:16:08,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:16:08,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:16:08,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (1/1) ... [2022-07-19 19:16:08,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:16:08,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:08,865 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 19:16:08,951 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 19:16:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:16:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:16:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:16:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:16:09,069 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:16:09,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:16:14,035 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:16:14,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:16:14,059 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-19 19:16:14,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:16:14 BoogieIcfgContainer [2022-07-19 19:16:14,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:16:14,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:16:14,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:16:14,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:16:14,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:16:05" (1/3) ... [2022-07-19 19:16:14,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d2cd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:16:14, skipping insertion in model container [2022-07-19 19:16:14,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:16:08" (2/3) ... [2022-07-19 19:16:14,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d2cd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:16:14, skipping insertion in model container [2022-07-19 19:16:14,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:16:14" (3/3) ... [2022-07-19 19:16:14,070 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-1.c [2022-07-19 19:16:14,079 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:16:14,080 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:16:14,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:16:14,148 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@2ccfc977, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@391e5841 [2022-07-19 19:16:14,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:16:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-19 19:16:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 19:16:14,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:14,170 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] [2022-07-19 19:16:14,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-07-19 19:16:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:14,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125188727] [2022-07-19 19:16:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:14,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:14,440 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 19:16:14,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125188727] [2022-07-19 19:16:14,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125188727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:14,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:14,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:16:14,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590835056] [2022-07-19 19:16:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:14,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:16:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:16:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:16:14,478 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:15,300 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-07-19 19:16:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:16:15,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-19 19:16:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:15,329 INFO L225 Difference]: With dead ends: 4802 [2022-07-19 19:16:15,330 INFO L226 Difference]: Without dead ends: 2427 [2022-07-19 19:16:15,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:16:15,342 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:15,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16676 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:16:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-07-19 19:16:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-07-19 19:16:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-19 19:16:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-07-19 19:16:15,468 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-07-19 19:16:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:15,469 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-07-19 19:16:15,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-07-19 19:16:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 19:16:15,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:15,476 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] [2022-07-19 19:16:15,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:16:15,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-07-19 19:16:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:15,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354168492] [2022-07-19 19:16:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:15,607 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 19:16:15,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:15,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354168492] [2022-07-19 19:16:15,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354168492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:15,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:15,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:16:15,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214290888] [2022-07-19 19:16:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:15,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:16:15,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:16:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:16:15,611 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:16,351 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-07-19 19:16:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:16:16,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-19 19:16:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:16,363 INFO L225 Difference]: With dead ends: 2807 [2022-07-19 19:16:16,363 INFO L226 Difference]: Without dead ends: 2574 [2022-07-19 19:16:16,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:16:16,367 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4351 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:16,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 20673 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:16:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-19 19:16:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-07-19 19:16:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-19 19:16:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-07-19 19:16:16,433 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-07-19 19:16:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:16,433 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-07-19 19:16:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-07-19 19:16:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 19:16:16,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:16,436 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] [2022-07-19 19:16:16,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:16:16,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-07-19 19:16:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:16,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081099726] [2022-07-19 19:16:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:16,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:16,558 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 19:16:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:16,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081099726] [2022-07-19 19:16:16,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081099726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:16,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:16,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:16:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306219396] [2022-07-19 19:16:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:16:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:16:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:16:16,563 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:17,297 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-07-19 19:16:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:16:17,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-19 19:16:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:17,308 INFO L225 Difference]: With dead ends: 3193 [2022-07-19 19:16:17,308 INFO L226 Difference]: Without dead ends: 2851 [2022-07-19 19:16:17,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:16:17,315 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4383 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 20418 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:17,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 20418 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:16:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-07-19 19:16:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-07-19 19:16:17,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-19 19:16:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-07-19 19:16:17,373 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-07-19 19:16:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:17,373 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-07-19 19:16:17,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-07-19 19:16:17,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 19:16:17,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:17,375 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] [2022-07-19 19:16:17,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:16:17,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-07-19 19:16:17,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:17,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518405592] [2022-07-19 19:16:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:17,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:17,433 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 19:16:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:17,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518405592] [2022-07-19 19:16:17,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518405592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:17,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:17,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:16:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285926831] [2022-07-19 19:16:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:16:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:16:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:16:17,435 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:18,157 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-07-19 19:16:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:16:18,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-19 19:16:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:18,170 INFO L225 Difference]: With dead ends: 4037 [2022-07-19 19:16:18,170 INFO L226 Difference]: Without dead ends: 3476 [2022-07-19 19:16:18,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:16:18,174 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4357 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:18,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20671 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:16:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-07-19 19:16:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-07-19 19:16:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-19 19:16:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-07-19 19:16:18,252 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-07-19 19:16:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:18,253 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-07-19 19:16:18,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-07-19 19:16:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 19:16:18,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:18,255 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] [2022-07-19 19:16:18,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:16:18,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-07-19 19:16:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:18,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215803704] [2022-07-19 19:16:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:18,307 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 19:16:18,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:18,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215803704] [2022-07-19 19:16:18,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215803704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:18,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:18,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:16:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921796249] [2022-07-19 19:16:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:18,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:16:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:16:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:16:18,309 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:18,917 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-07-19 19:16:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:16:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-19 19:16:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:18,933 INFO L225 Difference]: With dead ends: 5435 [2022-07-19 19:16:18,933 INFO L226 Difference]: Without dead ends: 4462 [2022-07-19 19:16:18,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:16:18,937 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4362 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20643 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:18,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20643 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 19:16:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-07-19 19:16:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-07-19 19:16:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-19 19:16:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-07-19 19:16:19,029 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-07-19 19:16:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:19,029 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-07-19 19:16:19,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-07-19 19:16:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 19:16:19,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:19,031 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] [2022-07-19 19:16:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:16:19,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-07-19 19:16:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286340501] [2022-07-19 19:16:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,074 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 19:16:19,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:19,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286340501] [2022-07-19 19:16:19,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286340501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:19,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:19,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:16:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451792101] [2022-07-19 19:16:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:16:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:16:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:16:19,076 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:19,745 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-07-19 19:16:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:16:19,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-19 19:16:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:19,765 INFO L225 Difference]: With dead ends: 7278 [2022-07-19 19:16:19,765 INFO L226 Difference]: Without dead ends: 5469 [2022-07-19 19:16:19,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 19:16:19,774 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4485 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:19,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 16542 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:16:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-07-19 19:16:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-07-19 19:16:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-19 19:16:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-07-19 19:16:19,903 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-07-19 19:16:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:19,903 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-07-19 19:16:19,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:16:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-07-19 19:16:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 19:16:19,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:19,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:16:19,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-07-19 19:16:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:19,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300408575] [2022-07-19 19:16:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 19:16:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 19:16:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 19:16:19,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:19,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300408575] [2022-07-19 19:16:19,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300408575] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:19,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74790359] [2022-07-19 19:16:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:19,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:19,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:19,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 19:16:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:16:20,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 19:16:20,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:20,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74790359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:20,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:20,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 19:16:20,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156103471] [2022-07-19 19:16:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:20,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:20,117 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 19:16:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:20,283 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-07-19 19:16:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-07-19 19:16:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:20,306 INFO L225 Difference]: With dead ends: 10239 [2022-07-19 19:16:20,306 INFO L226 Difference]: Without dead ends: 7489 [2022-07-19 19:16:20,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:20,315 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:20,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-07-19 19:16:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-07-19 19:16:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-19 19:16:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-07-19 19:16:20,543 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-07-19 19:16:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-07-19 19:16:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 19:16:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-07-19 19:16:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 19:16:20,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:20,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:20,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:20,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:20,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-07-19 19:16:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:20,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644530445] [2022-07-19 19:16:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 19:16:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 19:16:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 19:16:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:20,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644530445] [2022-07-19 19:16:20,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644530445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:20,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549960037] [2022-07-19 19:16:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:20,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:20,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:20,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 19:16:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:16:20,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 19:16:20,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:20,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549960037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:20,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:20,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812290900] [2022-07-19 19:16:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:20,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:20,981 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 19:16:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:21,281 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-07-19 19:16:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:21,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-19 19:16:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:21,325 INFO L225 Difference]: With dead ends: 17751 [2022-07-19 19:16:21,326 INFO L226 Difference]: Without dead ends: 12449 [2022-07-19 19:16:21,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:21,347 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:21,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-07-19 19:16:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-07-19 19:16:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-19 19:16:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-07-19 19:16:21,834 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-07-19 19:16:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:21,836 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-07-19 19:16:21,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 19:16:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-07-19 19:16:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 19:16:21,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:21,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:21,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:22,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-19 19:16:22,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-07-19 19:16:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:22,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722783086] [2022-07-19 19:16:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 19:16:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 19:16:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 19:16:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 19:16:22,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:22,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722783086] [2022-07-19 19:16:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722783086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:22,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447831075] [2022-07-19 19:16:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:22,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:22,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:22,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:22,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 19:16:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:22,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:16:22,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 19:16:22,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:22,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447831075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:22,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:22,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 19:16:22,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576864944] [2022-07-19 19:16:22,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:22,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:22,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:22,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:22,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:22,342 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 19:16:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:22,766 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-07-19 19:16:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-19 19:16:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:22,832 INFO L225 Difference]: With dead ends: 32641 [2022-07-19 19:16:22,832 INFO L226 Difference]: Without dead ends: 22329 [2022-07-19 19:16:22,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:22,869 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:22,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-07-19 19:16:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-07-19 19:16:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-19 19:16:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-07-19 19:16:23,611 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-07-19 19:16:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:23,611 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-07-19 19:16:23,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 19:16:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-07-19 19:16:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 19:16:23,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:23,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:23,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:23,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:23,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-07-19 19:16:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:23,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964367963] [2022-07-19 19:16:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:23,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 19:16:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 19:16:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 19:16:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 19:16:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-19 19:16:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:23,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964367963] [2022-07-19 19:16:23,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964367963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:23,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332906140] [2022-07-19 19:16:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:23,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:23,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 19:16:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:24,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:16:24,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 19:16:24,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:24,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332906140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:24,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:24,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:24,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856125281] [2022-07-19 19:16:24,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:24,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:24,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:24,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:24,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:24,129 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 19:16:24,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:24,671 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-07-19 19:16:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:24,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-19 19:16:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:24,744 INFO L225 Difference]: With dead ends: 44457 [2022-07-19 19:16:24,744 INFO L226 Difference]: Without dead ends: 24473 [2022-07-19 19:16:24,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:24,801 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:24,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-07-19 19:16:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-07-19 19:16:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-19 19:16:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-07-19 19:16:25,800 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-07-19 19:16:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:25,801 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-07-19 19:16:25,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 19:16:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-07-19 19:16:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 19:16:25,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:25,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:25,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:26,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:26,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-07-19 19:16:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:26,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795365649] [2022-07-19 19:16:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 19:16:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 19:16:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 19:16:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 19:16:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-19 19:16:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:26,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795365649] [2022-07-19 19:16:26,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795365649] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:26,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183828610] [2022-07-19 19:16:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:26,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:26,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:26,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 19:16:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:26,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 19:16:26,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 19:16:26,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:26,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183828610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:26,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:26,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312653312] [2022-07-19 19:16:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:26,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:26,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:26,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:26,348 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 19:16:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:27,128 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-07-19 19:16:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:27,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-07-19 19:16:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:27,211 INFO L225 Difference]: With dead ends: 41324 [2022-07-19 19:16:27,211 INFO L226 Difference]: Without dead ends: 26013 [2022-07-19 19:16:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:27,254 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-07-19 19:16:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-07-19 19:16:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-19 19:16:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-07-19 19:16:28,258 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-07-19 19:16:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:28,258 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-07-19 19:16:28,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 19:16:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-07-19 19:16:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 19:16:28,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:28,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:28,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 19:16:28,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:28,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-07-19 19:16:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:28,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122488086] [2022-07-19 19:16:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 19:16:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 19:16:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 19:16:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 19:16:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-19 19:16:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122488086] [2022-07-19 19:16:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122488086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790259212] [2022-07-19 19:16:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:28,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:28,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:28,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 19:16:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:28,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 19:16:28,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 19:16:28,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:28,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790259212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:28,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:28,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380582169] [2022-07-19 19:16:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:28,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:28,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:28,770 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 19:16:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:29,884 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-07-19 19:16:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:29,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-19 19:16:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:30,036 INFO L225 Difference]: With dead ends: 70245 [2022-07-19 19:16:30,036 INFO L226 Difference]: Without dead ends: 46511 [2022-07-19 19:16:30,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:30,088 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:30,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-07-19 19:16:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-07-19 19:16:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-07-19 19:16:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-07-19 19:16:31,818 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-07-19 19:16:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:31,819 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-07-19 19:16:31,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 19:16:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-07-19 19:16:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 19:16:31,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:31,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:31,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:32,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:32,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-07-19 19:16:32,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:32,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846978275] [2022-07-19 19:16:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 19:16:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 19:16:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 19:16:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 19:16:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-19 19:16:32,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:32,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846978275] [2022-07-19 19:16:32,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846978275] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:32,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008195119] [2022-07-19 19:16:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:32,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:32,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:32,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 19:16:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:32,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:16:32,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 19:16:32,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:32,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008195119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:32,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:32,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:32,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913029767] [2022-07-19 19:16:32,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:32,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:32,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:32,361 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 19:16:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:33,770 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-07-19 19:16:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:33,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-19 19:16:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:33,873 INFO L225 Difference]: With dead ends: 75161 [2022-07-19 19:16:33,873 INFO L226 Difference]: Without dead ends: 40527 [2022-07-19 19:16:33,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:33,923 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:33,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-07-19 19:16:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-07-19 19:16:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-07-19 19:16:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-07-19 19:16:35,166 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-07-19 19:16:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:35,167 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-07-19 19:16:35,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 19:16:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-07-19 19:16:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 19:16:35,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:35,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:35,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:35,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-07-19 19:16:35,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:35,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633336851] [2022-07-19 19:16:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 19:16:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 19:16:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 19:16:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 19:16:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-19 19:16:35,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:35,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633336851] [2022-07-19 19:16:35,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633336851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:35,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334492440] [2022-07-19 19:16:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:35,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:35,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:35,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 19:16:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:35,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 19:16:35,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 19:16:35,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:35,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334492440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:35,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:35,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:35,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603812558] [2022-07-19 19:16:35,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:35,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:35,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:35,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:35,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:35,646 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 19:16:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:37,491 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-07-19 19:16:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:16:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-19 19:16:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:37,668 INFO L225 Difference]: With dead ends: 82801 [2022-07-19 19:16:37,668 INFO L226 Difference]: Without dead ends: 55005 [2022-07-19 19:16:37,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:37,726 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:37,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:16:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states. [2022-07-19 19:16:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55005 to 53491. [2022-07-19 19:16:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53491 states, 45624 states have (on average 1.3054751884972822) internal successors, (59561), 46105 states have internal predecessors, (59561), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8740), 4233 states have call predecessors, (8740), 4265 states have call successors, (8740) [2022-07-19 19:16:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53491 states to 53491 states and 72566 transitions. [2022-07-19 19:16:40,116 INFO L78 Accepts]: Start accepts. Automaton has 53491 states and 72566 transitions. Word has length 160 [2022-07-19 19:16:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 53491 states and 72566 transitions. [2022-07-19 19:16:40,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 19:16:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 53491 states and 72566 transitions. [2022-07-19 19:16:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 19:16:40,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:40,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:40,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 19:16:40,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 19:16:40,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2022-07-19 19:16:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:40,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665384868] [2022-07-19 19:16:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 19:16:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 19:16:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 19:16:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 19:16:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-19 19:16:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:40,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665384868] [2022-07-19 19:16:40,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665384868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:40,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:40,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:16:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110517070] [2022-07-19 19:16:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:40,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:16:40,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:16:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:16:40,445 INFO L87 Difference]: Start difference. First operand 53491 states and 72566 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 19:16:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:42,649 INFO L93 Difference]: Finished difference Result 102539 states and 136687 transitions. [2022-07-19 19:16:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:16:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-19 19:16:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:42,812 INFO L225 Difference]: With dead ends: 102539 [2022-07-19 19:16:42,812 INFO L226 Difference]: Without dead ends: 51193 [2022-07-19 19:16:42,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:42,900 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 282 mSDsluCounter, 12001 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16137 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:42,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16137 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 19:16:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51193 states. [2022-07-19 19:16:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51193 to 48475. [2022-07-19 19:16:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 41692 states have (on average 1.3054542837954524) internal successors, (54427), 42585 states have internal predecessors, (54427), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (7133), 3449 states have call predecessors, (7133), 3253 states have call successors, (7133) [2022-07-19 19:16:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 64813 transitions. [2022-07-19 19:16:45,213 INFO L78 Accepts]: Start accepts. Automaton has 48475 states and 64813 transitions. Word has length 160 [2022-07-19 19:16:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:45,213 INFO L495 AbstractCegarLoop]: Abstraction has 48475 states and 64813 transitions. [2022-07-19 19:16:45,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 19:16:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 48475 states and 64813 transitions. [2022-07-19 19:16:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 19:16:45,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:45,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:45,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 19:16:45,274 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash -809968940, now seen corresponding path program 1 times [2022-07-19 19:16:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:45,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215368313] [2022-07-19 19:16:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 19:16:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 19:16:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 19:16:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 19:16:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 19:16:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:45,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215368313] [2022-07-19 19:16:45,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215368313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:45,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:16:45,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:16:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371285824] [2022-07-19 19:16:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:16:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:16:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:16:45,326 INFO L87 Difference]: Start difference. First operand 48475 states and 64813 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 19:16:47,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:16:47,285 INFO L93 Difference]: Finished difference Result 86015 states and 113686 transitions. [2022-07-19 19:16:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:16:47,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-19 19:16:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:16:47,393 INFO L225 Difference]: With dead ends: 86015 [2022-07-19 19:16:47,393 INFO L226 Difference]: Without dead ends: 39677 [2022-07-19 19:16:47,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:47,456 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 282 mSDsluCounter, 12000 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16135 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:16:47,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16135 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 19:16:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39677 states. [2022-07-19 19:16:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39677 to 37027. [2022-07-19 19:16:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.3210690840887778) internal successors, (42261), 32627 states have internal predecessors, (42261), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-19 19:16:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 49655 transitions. [2022-07-19 19:16:49,097 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 49655 transitions. Word has length 160 [2022-07-19 19:16:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:16:49,097 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 49655 transitions. [2022-07-19 19:16:49,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 19:16:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 49655 transitions. [2022-07-19 19:16:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 19:16:49,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:16:49,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:16:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 19:16:49,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:16:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:16:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1498858591, now seen corresponding path program 1 times [2022-07-19 19:16:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:16:49,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050069314] [2022-07-19 19:16:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:16:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:16:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 19:16:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:16:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 19:16:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 19:16:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 19:16:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 19:16:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 19:16:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:16:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 19:16:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 19:16:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:16:49,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050069314] [2022-07-19 19:16:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050069314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:16:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105668628] [2022-07-19 19:16:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:16:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:16:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:16:49,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:16:49,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 19:16:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:16:49,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 19:16:49,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:16:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 19:16:49,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:16:49,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105668628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:16:49,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:16:49,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 19:16:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155040506] [2022-07-19 19:16:49,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:16:49,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:16:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:16:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:16:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:16:49,353 INFO L87 Difference]: Start difference. First operand 37027 states and 49655 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)