./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:39:58,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:39:58,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:39:59,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:39:59,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:39:59,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:39:59,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:39:59,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:39:59,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:39:59,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:39:59,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:39:59,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:39:59,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:39:59,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:39:59,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:39:59,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:39:59,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:39:59,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:39:59,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:39:59,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:39:59,057 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:39:59,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:39:59,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:39:59,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:39:59,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:39:59,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:39:59,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:39:59,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:39:59,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:39:59,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:39:59,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:39:59,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:39:59,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:39:59,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:39:59,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:39:59,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:39:59,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:39:59,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:39:59,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:39:59,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:39:59,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:39:59,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:39:59,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:39:59,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:39:59,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:39:59,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:39:59,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:39:59,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:39:59,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:39:59,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:39:59,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:39:59,111 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:39:59,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:39:59,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:39:59,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:39:59,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:39:59,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:39:59,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:39:59,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:39:59,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:39:59,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:39:59,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:39:59,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:39:59,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:39:59,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:39:59,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:39:59,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:39:59,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:39:59,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:39:59,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:39:59,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:39:59,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:39:59,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:39:59,116 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:39:59,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:39:59,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:39:59,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e [2022-07-19 17:39:59,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:39:59,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:39:59,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:39:59,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:39:59,342 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:39:59,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2022-07-19 17:39:59,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813aed99b/f4a443a4706d498db728856cae02c1e7/FLAG86fde4955 [2022-07-19 17:39:59,919 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:39:59,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2022-07-19 17:39:59,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813aed99b/f4a443a4706d498db728856cae02c1e7/FLAG86fde4955 [2022-07-19 17:40:00,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813aed99b/f4a443a4706d498db728856cae02c1e7 [2022-07-19 17:40:00,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:40:00,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:40:00,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:40:00,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:40:00,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:40:00,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb727ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00, skipping insertion in model container [2022-07-19 17:40:00,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:40:00,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:40:00,607 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/systemc/token_ring.11.cil-2.c[671,684] [2022-07-19 17:40:00,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:40:00,735 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:40:00,747 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/systemc/token_ring.11.cil-2.c[671,684] [2022-07-19 17:40:00,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:40:00,821 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:40:00,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00 WrapperNode [2022-07-19 17:40:00,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:40:00,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:40:00,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:40:00,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:40:00,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,881 INFO L137 Inliner]: procedures = 50, calls = 64, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 795 [2022-07-19 17:40:00,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:40:00,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:40:00,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:40:00,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:40:00,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:40:00,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:40:00,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:40:00,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:40:00,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (1/1) ... [2022-07-19 17:40:00,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:40:00,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:40:00,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:40:00,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:40:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:40:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 17:40:01,010 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 17:40:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 17:40:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 17:40:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 17:40:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 17:40:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 17:40:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 17:40:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 17:40:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 17:40:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 17:40:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 17:40:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:40:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:40:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:40:01,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:40:01,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:40:01,774 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:40:01,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:40:01,786 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-19 17:40:01,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:40:01 BoogieIcfgContainer [2022-07-19 17:40:01,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:40:01,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:40:01,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:40:01,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:40:01,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:40:00" (1/3) ... [2022-07-19 17:40:01,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547d7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:40:01, skipping insertion in model container [2022-07-19 17:40:01,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:00" (2/3) ... [2022-07-19 17:40:01,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547d7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:40:01, skipping insertion in model container [2022-07-19 17:40:01,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:40:01" (3/3) ... [2022-07-19 17:40:01,797 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-2.c [2022-07-19 17:40:01,809 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:40:01,810 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:40:01,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:40:01,883 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@6ec54ac8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@50d69c48 [2022-07-19 17:40:01,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:40:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-19 17:40:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:01,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:01,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:01,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash 972283439, now seen corresponding path program 1 times [2022-07-19 17:40:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:01,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154834356] [2022-07-19 17:40:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:02,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:02,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154834356] [2022-07-19 17:40:02,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154834356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:02,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:02,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:40:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126299906] [2022-07-19 17:40:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:40:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:40:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:40:02,487 INFO L87 Difference]: Start difference. First operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:04,010 INFO L93 Difference]: Finished difference Result 836 states and 1389 transitions. [2022-07-19 17:40:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:40:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:04,028 INFO L225 Difference]: With dead ends: 836 [2022-07-19 17:40:04,028 INFO L226 Difference]: Without dead ends: 483 [2022-07-19 17:40:04,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:40:04,036 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 957 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:04,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 985 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 17:40:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-19 17:40:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2022-07-19 17:40:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.571875) internal successors, (503), 321 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-19 17:40:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 553 transitions. [2022-07-19 17:40:04,126 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 553 transitions. Word has length 166 [2022-07-19 17:40:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:04,127 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 553 transitions. [2022-07-19 17:40:04,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 553 transitions. [2022-07-19 17:40:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:04,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:04,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:04,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:40:04,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:04,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:04,137 INFO L85 PathProgramCache]: Analyzing trace with hash 627455277, now seen corresponding path program 1 times [2022-07-19 17:40:04,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:04,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138233649] [2022-07-19 17:40:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:04,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:04,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138233649] [2022-07-19 17:40:04,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138233649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:04,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:04,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:40:04,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774683266] [2022-07-19 17:40:04,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:04,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:40:04,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:40:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:40:04,388 INFO L87 Difference]: Start difference. First operand 352 states and 553 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:05,656 INFO L93 Difference]: Finished difference Result 819 states and 1305 transitions. [2022-07-19 17:40:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:40:05,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:05,660 INFO L225 Difference]: With dead ends: 819 [2022-07-19 17:40:05,660 INFO L226 Difference]: Without dead ends: 483 [2022-07-19 17:40:05,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:40:05,663 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 944 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:05,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 971 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:40:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-19 17:40:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2022-07-19 17:40:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.56875) internal successors, (502), 321 states have internal predecessors, (502), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-19 17:40:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 552 transitions. [2022-07-19 17:40:05,702 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 552 transitions. Word has length 166 [2022-07-19 17:40:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:05,704 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 552 transitions. [2022-07-19 17:40:05,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 552 transitions. [2022-07-19 17:40:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:05,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:05,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:40:05,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 241592875, now seen corresponding path program 1 times [2022-07-19 17:40:05,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:05,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256309091] [2022-07-19 17:40:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:05,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:05,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256309091] [2022-07-19 17:40:05,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256309091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:05,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:05,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:40:05,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199941762] [2022-07-19 17:40:05,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:40:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:40:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:40:05,945 INFO L87 Difference]: Start difference. First operand 352 states and 552 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:08,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:08,492 INFO L93 Difference]: Finished difference Result 1296 states and 2079 transitions. [2022-07-19 17:40:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:40:08,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:08,498 INFO L225 Difference]: With dead ends: 1296 [2022-07-19 17:40:08,498 INFO L226 Difference]: Without dead ends: 963 [2022-07-19 17:40:08,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:40:08,500 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1437 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:08,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1536 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:40:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-19 17:40:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 702. [2022-07-19 17:40:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 643 states have (on average 1.5816485225505443) internal successors, (1017), 645 states have internal predecessors, (1017), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-19 17:40:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1110 transitions. [2022-07-19 17:40:08,553 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1110 transitions. Word has length 166 [2022-07-19 17:40:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:08,554 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1110 transitions. [2022-07-19 17:40:08,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1110 transitions. [2022-07-19 17:40:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:08,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:08,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:40:08,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1241179055, now seen corresponding path program 1 times [2022-07-19 17:40:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:08,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562475850] [2022-07-19 17:40:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:08,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:08,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:08,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562475850] [2022-07-19 17:40:08,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562475850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:08,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:08,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909209038] [2022-07-19 17:40:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:08,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:08,715 INFO L87 Difference]: Start difference. First operand 702 states and 1110 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:11,538 INFO L93 Difference]: Finished difference Result 2144 states and 3444 transitions. [2022-07-19 17:40:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:11,549 INFO L225 Difference]: With dead ends: 2144 [2022-07-19 17:40:11,549 INFO L226 Difference]: Without dead ends: 1461 [2022-07-19 17:40:11,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:11,562 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1462 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:11,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2677 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 17:40:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-07-19 17:40:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1027. [2022-07-19 17:40:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 941 states have (on average 1.5749202975557917) internal successors, (1482), 944 states have internal predecessors, (1482), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-19 17:40:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1617 transitions. [2022-07-19 17:40:11,652 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1617 transitions. Word has length 166 [2022-07-19 17:40:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:11,652 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1617 transitions. [2022-07-19 17:40:11,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1617 transitions. [2022-07-19 17:40:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:11,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:11,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:11,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:40:11,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1579466605, now seen corresponding path program 1 times [2022-07-19 17:40:11,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:11,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255706984] [2022-07-19 17:40:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:11,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255706984] [2022-07-19 17:40:11,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255706984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:11,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:11,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743744310] [2022-07-19 17:40:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:11,816 INFO L87 Difference]: Start difference. First operand 1027 states and 1617 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:14,880 INFO L93 Difference]: Finished difference Result 3394 states and 5439 transitions. [2022-07-19 17:40:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:14,895 INFO L225 Difference]: With dead ends: 3394 [2022-07-19 17:40:14,896 INFO L226 Difference]: Without dead ends: 2386 [2022-07-19 17:40:14,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:14,900 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 1459 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:14,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2669 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:40:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-07-19 17:40:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1678. [2022-07-19 17:40:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1538 states have (on average 1.568920676202861) internal successors, (2413), 1543 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-19 17:40:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2636 transitions. [2022-07-19 17:40:15,052 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2636 transitions. Word has length 166 [2022-07-19 17:40:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:15,052 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2636 transitions. [2022-07-19 17:40:15,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2636 transitions. [2022-07-19 17:40:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:15,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:15,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:15,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:40:15,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2006021103, now seen corresponding path program 1 times [2022-07-19 17:40:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801613095] [2022-07-19 17:40:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:15,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801613095] [2022-07-19 17:40:15,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801613095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:15,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:15,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733321234] [2022-07-19 17:40:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:15,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:15,197 INFO L87 Difference]: Start difference. First operand 1678 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:18,197 INFO L93 Difference]: Finished difference Result 5797 states and 9250 transitions. [2022-07-19 17:40:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:18,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:18,214 INFO L225 Difference]: With dead ends: 5797 [2022-07-19 17:40:18,214 INFO L226 Difference]: Without dead ends: 4138 [2022-07-19 17:40:18,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:18,219 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1455 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:18,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2665 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 17:40:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-07-19 17:40:18,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 2981. [2022-07-19 17:40:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2733 states have (on average 1.5642151481888036) internal successors, (4275), 2742 states have internal predecessors, (4275), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-19 17:40:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4680 transitions. [2022-07-19 17:40:18,441 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4680 transitions. Word has length 166 [2022-07-19 17:40:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:18,441 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 4680 transitions. [2022-07-19 17:40:18,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:18,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4680 transitions. [2022-07-19 17:40:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:18,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:18,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:18,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:40:18,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1465591597, now seen corresponding path program 1 times [2022-07-19 17:40:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:18,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120711733] [2022-07-19 17:40:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:18,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120711733] [2022-07-19 17:40:18,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120711733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:18,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:18,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130525445] [2022-07-19 17:40:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:18,595 INFO L87 Difference]: Start difference. First operand 2981 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:21,598 INFO L93 Difference]: Finished difference Result 10602 states and 16888 transitions. [2022-07-19 17:40:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:21,631 INFO L225 Difference]: With dead ends: 10602 [2022-07-19 17:40:21,631 INFO L226 Difference]: Without dead ends: 7640 [2022-07-19 17:40:21,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:21,643 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1451 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:21,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 2661 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:40:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2022-07-19 17:40:22,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 5592. [2022-07-19 17:40:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5128 states have (on average 1.56103744149766) internal successors, (8005), 5145 states have internal predecessors, (8005), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-19 17:40:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 8792 transitions. [2022-07-19 17:40:22,125 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 8792 transitions. Word has length 166 [2022-07-19 17:40:22,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:22,126 INFO L495 AbstractCegarLoop]: Abstraction has 5592 states and 8792 transitions. [2022-07-19 17:40:22,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 8792 transitions. [2022-07-19 17:40:22,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:22,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:22,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:22,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:40:22,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:22,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1309611055, now seen corresponding path program 1 times [2022-07-19 17:40:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:22,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924727085] [2022-07-19 17:40:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:22,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:22,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:22,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:22,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924727085] [2022-07-19 17:40:22,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924727085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:22,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:22,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:22,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719020950] [2022-07-19 17:40:22,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:22,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:22,332 INFO L87 Difference]: Start difference. First operand 5592 states and 8792 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:25,734 INFO L93 Difference]: Finished difference Result 20211 states and 32222 transitions. [2022-07-19 17:40:25,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:25,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:25,799 INFO L225 Difference]: With dead ends: 20211 [2022-07-19 17:40:25,799 INFO L226 Difference]: Without dead ends: 14638 [2022-07-19 17:40:25,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:25,820 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 1450 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:25,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2655 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 17:40:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14638 states. [2022-07-19 17:40:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14638 to 10827. [2022-07-19 17:40:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 9931 states have (on average 1.5590574967274191) internal successors, (15483), 9964 states have internal predecessors, (15483), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-19 17:40:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 17088 transitions. [2022-07-19 17:40:26,749 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 17088 transitions. Word has length 166 [2022-07-19 17:40:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:26,751 INFO L495 AbstractCegarLoop]: Abstraction has 10827 states and 17088 transitions. [2022-07-19 17:40:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 17088 transitions. [2022-07-19 17:40:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:26,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:26,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:26,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:40:26,760 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:26,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1720221421, now seen corresponding path program 1 times [2022-07-19 17:40:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:26,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978772954] [2022-07-19 17:40:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:26,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:26,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:26,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978772954] [2022-07-19 17:40:26,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978772954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:26,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:26,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834990089] [2022-07-19 17:40:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:26,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:26,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:26,910 INFO L87 Difference]: Start difference. First operand 10827 states and 17088 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:31,399 INFO L93 Difference]: Finished difference Result 39397 states and 63020 transitions. [2022-07-19 17:40:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:31,509 INFO L225 Difference]: With dead ends: 39397 [2022-07-19 17:40:31,510 INFO L226 Difference]: Without dead ends: 28589 [2022-07-19 17:40:31,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:31,606 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1445 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:31,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 2647 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2868 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:40:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28589 states. [2022-07-19 17:40:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28589 to 21359. [2022-07-19 17:40:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21359 states, 19599 states have (on average 1.558599928567784) internal successors, (30547), 19664 states have internal predecessors, (30547), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-19 17:40:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21359 states to 21359 states and 33950 transitions. [2022-07-19 17:40:33,303 INFO L78 Accepts]: Start accepts. Automaton has 21359 states and 33950 transitions. Word has length 166 [2022-07-19 17:40:33,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:33,304 INFO L495 AbstractCegarLoop]: Abstraction has 21359 states and 33950 transitions. [2022-07-19 17:40:33,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21359 states and 33950 transitions. [2022-07-19 17:40:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:33,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:33,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:33,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:40:33,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:33,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash -415661781, now seen corresponding path program 1 times [2022-07-19 17:40:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:33,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840394623] [2022-07-19 17:40:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:33,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840394623] [2022-07-19 17:40:33,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840394623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:33,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:33,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:33,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312399646] [2022-07-19 17:40:33,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:33,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:33,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:33,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:33,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:33,468 INFO L87 Difference]: Start difference. First operand 21359 states and 33950 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:40,529 INFO L93 Difference]: Finished difference Result 77835 states and 125344 transitions. [2022-07-19 17:40:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:40,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:40,826 INFO L225 Difference]: With dead ends: 77835 [2022-07-19 17:40:40,827 INFO L226 Difference]: Without dead ends: 56495 [2022-07-19 17:40:40,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:40,904 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1444 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:40,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2642 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:40:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56495 states. [2022-07-19 17:40:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56495 to 42484. [2022-07-19 17:40:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42484 states, 38996 states have (on average 1.5582367422299723) internal successors, (60765), 39125 states have internal predecessors, (60765), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-19 17:40:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42484 states to 42484 states and 68250 transitions. [2022-07-19 17:40:43,924 INFO L78 Accepts]: Start accepts. Automaton has 42484 states and 68250 transitions. Word has length 166 [2022-07-19 17:40:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:43,925 INFO L495 AbstractCegarLoop]: Abstraction has 42484 states and 68250 transitions. [2022-07-19 17:40:43,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42484 states and 68250 transitions. [2022-07-19 17:40:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:40:43,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:43,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:43,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:40:43,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash -346013907, now seen corresponding path program 1 times [2022-07-19 17:40:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241794945] [2022-07-19 17:40:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:40:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:40:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:40:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:40:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:44,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:44,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241794945] [2022-07-19 17:40:44,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241794945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:44,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:44,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:44,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950284699] [2022-07-19 17:40:44,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:44,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:44,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:44,113 INFO L87 Difference]: Start difference. First operand 42484 states and 68250 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:55,752 INFO L93 Difference]: Finished difference Result 154710 states and 251838 transitions. [2022-07-19 17:40:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:55,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-07-19 17:40:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:56,456 INFO L225 Difference]: With dead ends: 154710 [2022-07-19 17:40:56,456 INFO L226 Difference]: Without dead ends: 112245 [2022-07-19 17:40:56,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:56,831 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 1443 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:56,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 2637 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 17:40:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112245 states. [2022-07-19 17:41:02,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112245 to 84861. [2022-07-19 17:41:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84861 states, 77917 states have (on average 1.5579526932505101) internal successors, (121391), 78174 states have internal predecessors, (121391), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-19 17:41:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84861 states to 84861 states and 138498 transitions. [2022-07-19 17:41:03,788 INFO L78 Accepts]: Start accepts. Automaton has 84861 states and 138498 transitions. Word has length 166 [2022-07-19 17:41:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:03,789 INFO L495 AbstractCegarLoop]: Abstraction has 84861 states and 138498 transitions. [2022-07-19 17:41:03,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 84861 states and 138498 transitions. [2022-07-19 17:41:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 17:41:03,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:03,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:41:03,848 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash 71874795, now seen corresponding path program 1 times [2022-07-19 17:41:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:03,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711371431] [2022-07-19 17:41:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:41:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:41:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:41:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 17:41:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:04,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711371431] [2022-07-19 17:41:04,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711371431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:04,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:04,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:04,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679736925] [2022-07-19 17:41:04,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:04,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:04,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:04,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:04,021 INFO L87 Difference]: Start difference. First operand 84861 states and 138498 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)