./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_label49+token_ring.03.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 45212159197fe0bc553796025c4b5584a047c150b6d840572b407bf4bd1f9446 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:07:18,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:07:18,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:07:18,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:07:18,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:07:18,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:07:18,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:07:18,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:07:18,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:07:18,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:07:18,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:07:18,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:07:18,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:07:18,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:07:18,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:07:18,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:07:18,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:07:18,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:07:18,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:07:18,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:07:18,816 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:07:18,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:07:18,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:07:18,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:07:18,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:07:18,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:07:18,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:07:18,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:07:18,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:07:18,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:07:18,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:07:18,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:07:18,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:07:18,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:07:18,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:07:18,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:07:18,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:07:18,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:07:18,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:07:18,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:07:18,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:07:18,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:07:18,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:07:18,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:07:18,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:07:18,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:07:18,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:07:18,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:07:18,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:07:18,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:07:18,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:07:18,864 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:07:18,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:07:18,865 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:07:18,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:07:18,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:07:18,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:07:18,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:07:18,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:07:18,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:07:18,866 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:07:18,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:07:18,867 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:07:18,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:07:18,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:07:18,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:07:18,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:07:18,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:07:18,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:07:18,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:07:18,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:07:18,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:07:18,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:07:18,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:07:18,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:07:18,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:07:18,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45212159197fe0bc553796025c4b5584a047c150b6d840572b407bf4bd1f9446 [2022-07-13 20:07:19,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:07:19,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:07:19,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:07:19,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:07:19,124 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:07:19,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c [2022-07-13 20:07:19,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0047fc36/46789de279ac44129a3f3b294bc27eff/FLAGec2019e71 [2022-07-13 20:07:19,926 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:07:19,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c [2022-07-13 20:07:19,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0047fc36/46789de279ac44129a3f3b294bc27eff/FLAGec2019e71 [2022-07-13 20:07:20,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0047fc36/46789de279ac44129a3f3b294bc27eff [2022-07-13 20:07:20,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:07:20,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:07:20,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:07:20,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:07:20,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:07:20,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:07:20" (1/1) ... [2022-07-13 20:07:20,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632d5969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:20, skipping insertion in model container [2022-07-13 20:07:20,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:07:20" (1/1) ... [2022-07-13 20:07:20,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:07:20,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:07:22,252 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_label49+token_ring.03.cil-1.c[380593,380606] [2022-07-13 20:07:22,276 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_label49+token_ring.03.cil-1.c[383339,383352] [2022-07-13 20:07:22,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:07:22,432 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:07:23,263 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_label49+token_ring.03.cil-1.c[380593,380606] [2022-07-13 20:07:23,269 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_label49+token_ring.03.cil-1.c[383339,383352] [2022-07-13 20:07:23,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:07:23,343 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:07:23,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23 WrapperNode [2022-07-13 20:07:23,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:07:23,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:07:23,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:07:23,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:07:23,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:23,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:23,756 INFO L137 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-07-13 20:07:23,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:07:23,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:07:23,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:07:23,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:07:23,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:23,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:23,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:23,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:24,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:24,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:24,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:24,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:07:24,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:07:24,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:07:24,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:07:24,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (1/1) ... [2022-07-13 20:07:24,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:07:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:07:24,345 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) [2022-07-13 20:07:24,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:07:24,408 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:07:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:07:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:07:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:07:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:07:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:07:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 20:07:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 20:07:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:07:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:07:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:07:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:07:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:07:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:07:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:07:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:07:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:07:24,388 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 [2022-07-13 20:07:24,555 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:07:24,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:07:30,304 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:07:30,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:07:30,335 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-13 20:07:30,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:07:30 BoogieIcfgContainer [2022-07-13 20:07:30,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:07:30,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:07:30,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:07:30,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:07:30,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:07:20" (1/3) ... [2022-07-13 20:07:30,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddb150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:07:30, skipping insertion in model container [2022-07-13 20:07:30,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:07:23" (2/3) ... [2022-07-13 20:07:30,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddb150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:07:30, skipping insertion in model container [2022-07-13 20:07:30,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:07:30" (3/3) ... [2022-07-13 20:07:30,351 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-1.c [2022-07-13 20:07:30,365 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:07:30,365 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:07:30,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:07:30,458 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@72f10e36, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a03bfe4 [2022-07-13 20:07:30,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:07:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 20:07:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:30,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:30,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:30,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash 520182233, now seen corresponding path program 1 times [2022-07-13 20:07:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537168205] [2022-07-13 20:07:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:30,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537168205] [2022-07-13 20:07:30,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537168205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:30,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:30,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:07:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351317171] [2022-07-13 20:07:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:07:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:07:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:07:30,910 INFO L87 Difference]: Start difference. First operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:31,989 INFO L93 Difference]: Finished difference Result 4921 states and 9054 transitions. [2022-07-13 20:07:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:07:31,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:31,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:32,022 INFO L225 Difference]: With dead ends: 4921 [2022-07-13 20:07:32,022 INFO L226 Difference]: Without dead ends: 2514 [2022-07-13 20:07:32,033 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 [2022-07-13 20:07:32,036 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 4559 mSDsluCounter, 12506 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 16805 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:32,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4569 Valid, 16805 Invalid, 794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:07:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-07-13 20:07:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2427. [2022-07-13 20:07:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2381 states have (on average 1.8299034019319613) internal successors, (4357), 2385 states have internal predecessors, (4357), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-13 20:07:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4420 transitions. [2022-07-13 20:07:32,170 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4420 transitions. Word has length 80 [2022-07-13 20:07:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:32,170 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 4420 transitions. [2022-07-13 20:07:32,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4420 transitions. [2022-07-13 20:07:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:32,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:32,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:32,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:07:32,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash -721258283, now seen corresponding path program 1 times [2022-07-13 20:07:32,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:32,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911088293] [2022-07-13 20:07:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:32,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:32,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911088293] [2022-07-13 20:07:32,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911088293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:32,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:32,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367968576] [2022-07-13 20:07:32,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:32,286 INFO L87 Difference]: Start difference. First operand 2427 states and 4420 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:33,466 INFO L93 Difference]: Finished difference Result 3000 states and 5300 transitions. [2022-07-13 20:07:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:33,481 INFO L225 Difference]: With dead ends: 3000 [2022-07-13 20:07:33,481 INFO L226 Difference]: Without dead ends: 2705 [2022-07-13 20:07:33,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:33,486 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 4483 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 20982 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:33,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 20982 Invalid, 1164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:07:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-07-13 20:07:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2565. [2022-07-13 20:07:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2500 states have (on average 1.8144) internal successors, (4536), 2505 states have internal predecessors, (4536), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-13 20:07:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4625 transitions. [2022-07-13 20:07:33,568 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4625 transitions. Word has length 80 [2022-07-13 20:07:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:33,568 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 4625 transitions. [2022-07-13 20:07:33,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4625 transitions. [2022-07-13 20:07:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:33,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:33,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:33,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:07:33,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1887529175, now seen corresponding path program 1 times [2022-07-13 20:07:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564552997] [2022-07-13 20:07:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:33,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:33,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564552997] [2022-07-13 20:07:33,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564552997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:33,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:33,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418296861] [2022-07-13 20:07:33,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:33,724 INFO L87 Difference]: Start difference. First operand 2565 states and 4625 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:34,810 INFO L93 Difference]: Finished difference Result 3497 states and 6053 transitions. [2022-07-13 20:07:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:34,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:34,824 INFO L225 Difference]: With dead ends: 3497 [2022-07-13 20:07:34,824 INFO L226 Difference]: Without dead ends: 3064 [2022-07-13 20:07:34,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:34,827 INFO L413 NwaCegarLoop]: 4336 mSDtfsCounter, 4480 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 20974 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:34,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4490 Valid, 20974 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:07:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-07-13 20:07:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2842. [2022-07-13 20:07:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2739 states have (on average 1.78714859437751) internal successors, (4895), 2746 states have internal predecessors, (4895), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-13 20:07:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 5040 transitions. [2022-07-13 20:07:34,901 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 5040 transitions. Word has length 80 [2022-07-13 20:07:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:34,901 INFO L495 AbstractCegarLoop]: Abstraction has 2842 states and 5040 transitions. [2022-07-13 20:07:34,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 5040 transitions. [2022-07-13 20:07:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:34,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:34,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:34,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:07:34,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1833136277, now seen corresponding path program 1 times [2022-07-13 20:07:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:34,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198130112] [2022-07-13 20:07:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:34,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:34,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198130112] [2022-07-13 20:07:34,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198130112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:34,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:34,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330245162] [2022-07-13 20:07:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:34,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:34,986 INFO L87 Difference]: Start difference. First operand 2842 states and 5040 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:36,034 INFO L93 Difference]: Finished difference Result 4458 states and 7508 transitions. [2022-07-13 20:07:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:36,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:36,050 INFO L225 Difference]: With dead ends: 4458 [2022-07-13 20:07:36,051 INFO L226 Difference]: Without dead ends: 3748 [2022-07-13 20:07:36,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:36,055 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 4476 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 20970 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:36,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4486 Valid, 20970 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:07:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-07-13 20:07:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3397. [2022-07-13 20:07:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3218 states have (on average 1.7442510876320696) internal successors, (5613), 3229 states have internal predecessors, (5613), 115 states have call successors, (115), 55 states have call predecessors, (115), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-13 20:07:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5876 transitions. [2022-07-13 20:07:36,152 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5876 transitions. Word has length 80 [2022-07-13 20:07:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:36,153 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 5876 transitions. [2022-07-13 20:07:36,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:36,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5876 transitions. [2022-07-13 20:07:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:36,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:36,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:36,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:07:36,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1415739671, now seen corresponding path program 1 times [2022-07-13 20:07:36,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:36,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507709983] [2022-07-13 20:07:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:36,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507709983] [2022-07-13 20:07:36,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507709983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:36,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:36,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736468623] [2022-07-13 20:07:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:36,292 INFO L87 Difference]: Start difference. First operand 3397 states and 5876 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:37,456 INFO L93 Difference]: Finished difference Result 6787 states and 11028 transitions. [2022-07-13 20:07:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:07:37,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:37,481 INFO L225 Difference]: With dead ends: 6787 [2022-07-13 20:07:37,481 INFO L226 Difference]: Without dead ends: 5522 [2022-07-13 20:07:37,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:07:37,490 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 4607 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 20956 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:37,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 20956 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:07:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2022-07-13 20:07:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4488. [2022-07-13 20:07:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4165 states have (on average 1.6900360144057622) internal successors, (7039), 4184 states have internal predecessors, (7039), 203 states have call successors, (203), 103 states have call predecessors, (203), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-07-13 20:07:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 7540 transitions. [2022-07-13 20:07:37,651 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 7540 transitions. Word has length 80 [2022-07-13 20:07:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:37,652 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 7540 transitions. [2022-07-13 20:07:37,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 7540 transitions. [2022-07-13 20:07:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:37,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:37,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:37,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:07:37,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2095011925, now seen corresponding path program 1 times [2022-07-13 20:07:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:37,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492831599] [2022-07-13 20:07:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:37,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:37,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492831599] [2022-07-13 20:07:37,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492831599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:37,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:37,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154109258] [2022-07-13 20:07:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:37,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:37,758 INFO L87 Difference]: Start difference. First operand 4488 states and 7540 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:38,951 INFO L93 Difference]: Finished difference Result 10772 states and 17130 transitions. [2022-07-13 20:07:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:07:38,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:39,122 INFO L225 Difference]: With dead ends: 10772 [2022-07-13 20:07:39,122 INFO L226 Difference]: Without dead ends: 8416 [2022-07-13 20:07:39,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:07:39,136 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 4493 mSDsluCounter, 16627 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 20990 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:39,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 20990 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:07:39,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-07-13 20:07:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6499. [2022-07-13 20:07:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 5896 states have (on average 1.6290705563093624) internal successors, (9605), 5931 states have internal predecessors, (9605), 371 states have call successors, (371), 199 states have call predecessors, (371), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-07-13 20:07:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 10620 transitions. [2022-07-13 20:07:39,442 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 10620 transitions. Word has length 80 [2022-07-13 20:07:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:39,442 INFO L495 AbstractCegarLoop]: Abstraction has 6499 states and 10620 transitions. [2022-07-13 20:07:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 10620 transitions. [2022-07-13 20:07:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:39,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:39,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:39,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:07:39,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash -238380713, now seen corresponding path program 1 times [2022-07-13 20:07:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:39,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217333070] [2022-07-13 20:07:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:39,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217333070] [2022-07-13 20:07:39,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217333070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:39,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:39,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351811880] [2022-07-13 20:07:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:39,554 INFO L87 Difference]: Start difference. First operand 6499 states and 10620 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:41,024 INFO L93 Difference]: Finished difference Result 17486 states and 27496 transitions. [2022-07-13 20:07:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:07:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:41,070 INFO L225 Difference]: With dead ends: 17486 [2022-07-13 20:07:41,071 INFO L226 Difference]: Without dead ends: 13119 [2022-07-13 20:07:41,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:07:41,088 INFO L413 NwaCegarLoop]: 4313 mSDtfsCounter, 4484 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20943 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:41,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20943 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:07:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13119 states. [2022-07-13 20:07:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 10695. [2022-07-13 20:07:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10695 states, 9548 states have (on average 1.581587767071638) internal successors, (15101), 9615 states have internal predecessors, (15101), 691 states have call successors, (691), 391 states have call predecessors, (691), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-07-13 20:07:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10695 states to 10695 states and 17274 transitions. [2022-07-13 20:07:41,526 INFO L78 Accepts]: Start accepts. Automaton has 10695 states and 17274 transitions. Word has length 80 [2022-07-13 20:07:41,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:41,528 INFO L495 AbstractCegarLoop]: Abstraction has 10695 states and 17274 transitions. [2022-07-13 20:07:41,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 10695 states and 17274 transitions. [2022-07-13 20:07:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:07:41,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:41,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:41,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:07:41,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash 322319065, now seen corresponding path program 1 times [2022-07-13 20:07:41,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:41,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303711676] [2022-07-13 20:07:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303711676] [2022-07-13 20:07:41,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303711676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:41,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:07:41,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177161358] [2022-07-13 20:07:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:07:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:07:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:07:41,627 INFO L87 Difference]: Start difference. First operand 10695 states and 17274 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:42,943 INFO L93 Difference]: Finished difference Result 26313 states and 41362 transitions. [2022-07-13 20:07:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:07:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-13 20:07:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:43,011 INFO L225 Difference]: With dead ends: 26313 [2022-07-13 20:07:43,011 INFO L226 Difference]: Without dead ends: 17751 [2022-07-13 20:07:43,042 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 [2022-07-13 20:07:43,043 INFO L413 NwaCegarLoop]: 4400 mSDtfsCounter, 4644 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:43,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4671 Valid, 16755 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 20:07:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2022-07-13 20:07:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 14888. [2022-07-13 20:07:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 13146 states have (on average 1.5442720219078045) internal successors, (20301), 13278 states have internal predecessors, (20301), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-07-13 20:07:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 23448 transitions. [2022-07-13 20:07:43,666 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 23448 transitions. Word has length 80 [2022-07-13 20:07:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:43,667 INFO L495 AbstractCegarLoop]: Abstraction has 14888 states and 23448 transitions. [2022-07-13 20:07:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:07:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 23448 transitions. [2022-07-13 20:07:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 20:07:43,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:43,699 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, 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] [2022-07-13 20:07:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:07:43,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2072406432, now seen corresponding path program 1 times [2022-07-13 20:07:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:43,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261382590] [2022-07-13 20:07:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:43,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 20:07:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:07:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 20:07:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:07:43,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:43,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261382590] [2022-07-13 20:07:43,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261382590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:07:43,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154707910] [2022-07-13 20:07:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:07:43,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:07:43,831 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) [2022-07-13 20:07:43,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:07:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:43,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:07:43,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:07:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 20:07:44,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:07:44,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154707910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:44,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:07:44,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:07:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978223819] [2022-07-13 20:07:44,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:07:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:07:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:44,054 INFO L87 Difference]: Start difference. First operand 14888 states and 23448 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:07:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:44,843 INFO L93 Difference]: Finished difference Result 40051 states and 62244 transitions. [2022-07-13 20:07:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:07:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-07-13 20:07:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:44,959 INFO L225 Difference]: With dead ends: 40051 [2022-07-13 20:07:44,959 INFO L226 Difference]: Without dead ends: 27296 [2022-07-13 20:07:45,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:45,010 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 4414 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 [2022-07-13 20:07:45,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4148 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:07:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-07-13 20:07:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 27096. [2022-07-13 20:07:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27096 states, 23670 states have (on average 1.514321926489227) internal successors, (35844), 23931 states have internal predecessors, (35844), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-07-13 20:07:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27096 states to 27096 states and 41965 transitions. [2022-07-13 20:07:46,220 INFO L78 Accepts]: Start accepts. Automaton has 27096 states and 41965 transitions. Word has length 129 [2022-07-13 20:07:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:46,220 INFO L495 AbstractCegarLoop]: Abstraction has 27096 states and 41965 transitions. [2022-07-13 20:07:46,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:07:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 27096 states and 41965 transitions. [2022-07-13 20:07:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 20:07:46,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:46,297 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, 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] [2022-07-13 20:07:46,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:07:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:07:46,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -853257536, now seen corresponding path program 1 times [2022-07-13 20:07:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:46,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214393794] [2022-07-13 20:07:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 20:07:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:07:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 20:07:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:07:46,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:46,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214393794] [2022-07-13 20:07:46,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214393794] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:07:46,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423024686] [2022-07-13 20:07:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:46,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:07:46,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:07:46,644 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) [2022-07-13 20:07:46,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:07:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:46,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:07:46,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:07:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 20:07:46,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:07:46,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423024686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:46,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:07:46,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:07:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065817833] [2022-07-13 20:07:46,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:46,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:07:46,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:46,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:07:46,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:46,828 INFO L87 Difference]: Start difference. First operand 27096 states and 41965 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:07:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:48,310 INFO L93 Difference]: Finished difference Result 76329 states and 117663 transitions. [2022-07-13 20:07:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:07:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-07-13 20:07:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:48,537 INFO L225 Difference]: With dead ends: 76329 [2022-07-13 20:07:48,537 INFO L226 Difference]: Without dead ends: 51366 [2022-07-13 20:07:48,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:48,608 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4142 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 4414 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 [2022-07-13 20:07:48,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:07:48,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51366 states. [2022-07-13 20:07:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51366 to 50970. [2022-07-13 20:07:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50970 states, 44226 states have (on average 1.4955908289241622) internal successors, (66144), 44745 states have internal predecessors, (66144), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-07-13 20:07:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50970 states to 50970 states and 78113 transitions. [2022-07-13 20:07:50,746 INFO L78 Accepts]: Start accepts. Automaton has 50970 states and 78113 transitions. Word has length 129 [2022-07-13 20:07:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:50,747 INFO L495 AbstractCegarLoop]: Abstraction has 50970 states and 78113 transitions. [2022-07-13 20:07:50,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:07:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 50970 states and 78113 transitions. [2022-07-13 20:07:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 20:07:50,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:50,830 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, 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] [2022-07-13 20:07:50,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:07:51,043 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,SelfDestructingSolverStorable9 [2022-07-13 20:07:51,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:51,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2127588384, now seen corresponding path program 1 times [2022-07-13 20:07:51,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:51,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139199504] [2022-07-13 20:07:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:51,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:07:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:07:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:07:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:07:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 20:07:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:07:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 20:07:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:07:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:51,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139199504] [2022-07-13 20:07:51,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139199504] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:07:51,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266635129] [2022-07-13 20:07:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:07:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:07:51,156 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) [2022-07-13 20:07:51,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:07:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:51,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:07:51,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:07:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 20:07:51,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:07:51,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266635129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:51,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:07:51,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:07:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76393029] [2022-07-13 20:07:51,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:51,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:07:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:07:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:51,282 INFO L87 Difference]: Start difference. First operand 50970 states and 78113 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:07:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:54,241 INFO L93 Difference]: Finished difference Result 146009 states and 224673 transitions. [2022-07-13 20:07:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:07:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2022-07-13 20:07:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:54,701 INFO L225 Difference]: With dead ends: 146009 [2022-07-13 20:07:54,701 INFO L226 Difference]: Without dead ends: 97173 [2022-07-13 20:07:54,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:54,849 INFO L413 NwaCegarLoop]: 4394 mSDtfsCounter, 194 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8586 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 [2022-07-13 20:07:54,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8586 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:07:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97173 states. [2022-07-13 20:07:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97173 to 97173. [2022-07-13 20:07:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97173 states, 83954 states have (on average 1.4752245277175595) internal successors, (123851), 84858 states have internal predecessors, (123851), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-07-13 20:07:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97173 states to 97173 states and 148642 transitions. [2022-07-13 20:07:59,576 INFO L78 Accepts]: Start accepts. Automaton has 97173 states and 148642 transitions. Word has length 129 [2022-07-13 20:07:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:59,578 INFO L495 AbstractCegarLoop]: Abstraction has 97173 states and 148642 transitions. [2022-07-13 20:07:59,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:07:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 97173 states and 148642 transitions. [2022-07-13 20:08:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 20:08:00,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:00,259 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:00,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 20:08:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:08:00,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash -318020336, now seen corresponding path program 1 times [2022-07-13 20:08:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:00,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529783923] [2022-07-13 20:08:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:08:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:08:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:08:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:08:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 20:08:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:08:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 20:08:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:08:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 20:08:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 20:08:00,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:00,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529783923] [2022-07-13 20:08:00,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529783923] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:08:00,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421747132] [2022-07-13 20:08:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:08:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:08:00,606 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) [2022-07-13 20:08:00,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 20:08:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:00,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:08:00,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:08:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 20:08:00,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:08:00,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421747132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:00,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:08:00,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:08:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58146989] [2022-07-13 20:08:00,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:00,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:08:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:08:00,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:08:00,869 INFO L87 Difference]: Start difference. First operand 97173 states and 148642 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 20:08:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:07,139 INFO L93 Difference]: Finished difference Result 282449 states and 433585 transitions. [2022-07-13 20:08:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:08:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-07-13 20:08:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:08,018 INFO L225 Difference]: With dead ends: 282449 [2022-07-13 20:08:08,019 INFO L226 Difference]: Without dead ends: 187415 [2022-07-13 20:08:08,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:08:08,516 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4098 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4417 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 [2022-07-13 20:08:08,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4417 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:08:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187415 states. [2022-07-13 20:08:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187415 to 185843. [2022-07-13 20:08:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185843 states, 160780 states have (on average 1.4701890782435627) internal successors, (236377), 162584 states have internal predecessors, (236377), 14407 states have call successors, (14407), 9119 states have call predecessors, (14407), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-07-13 20:08:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185843 states to 185843 states and 283058 transitions. [2022-07-13 20:08:16,344 INFO L78 Accepts]: Start accepts. Automaton has 185843 states and 283058 transitions. Word has length 167 [2022-07-13 20:08:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:16,344 INFO L495 AbstractCegarLoop]: Abstraction has 185843 states and 283058 transitions. [2022-07-13 20:08:16,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 20:08:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 185843 states and 283058 transitions. [2022-07-13 20:08:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 20:08:16,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:16,803 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, 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, 1, 1, 1, 1] [2022-07-13 20:08:16,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 20:08:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:08:17,031 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 159535236, now seen corresponding path program 1 times [2022-07-13 20:08:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580195908] [2022-07-13 20:08:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 20:08:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 20:08:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:08:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 20:08:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 20:08:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 20:08:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:08:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 20:08:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:08:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 20:08:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-13 20:08:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580195908] [2022-07-13 20:08:17,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580195908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:08:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37666284] [2022-07-13 20:08:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:08:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:08:17,159 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) [2022-07-13 20:08:17,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 20:08:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:17,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:08:17,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:08:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 20:08:17,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:08:17,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37666284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:17,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:08:17,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:08:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015492166] [2022-07-13 20:08:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:17,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:08:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:08:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:08:17,385 INFO L87 Difference]: Start difference. First operand 185843 states and 283058 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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)