./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad834a4fb5f4154353fe834bdf1b25d8394c06509e997c3a1b1b485e0c0b77f0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:09:11,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:09:11,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:09:11,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:09:11,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:09:11,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:09:11,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:09:11,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:09:11,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:09:11,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:09:11,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:09:11,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:09:11,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:09:11,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:09:11,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:09:11,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:09:11,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:09:11,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:09:11,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:09:11,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:09:11,883 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:09:11,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:09:11,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:09:11,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:09:11,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:09:11,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:09:11,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:09:11,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:09:11,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:09:11,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:09:11,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:09:11,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:09:11,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:09:11,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:09:11,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:09:11,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:09:11,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:09:11,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:09:11,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:09:11,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:09:11,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:09:11,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:09:11,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:09:11,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:09:11,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:09:11,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:09:11,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:09:11,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:09:11,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:09:11,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:09:11,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:09:11,927 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:09:11,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:09:11,928 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:09:11,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:09:11,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:09:11,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:09:11,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:09:11,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:09:11,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:09:11,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:09:11,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:09:11,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:09:11,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:09:11,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:09:11,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:09:11,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:09:11,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:09:11,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:09:11,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:09:11,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:09:11,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:09:11,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:09:11,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:09:11,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:09:11,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:09:11,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad834a4fb5f4154353fe834bdf1b25d8394c06509e997c3a1b1b485e0c0b77f0 [2022-07-13 20:09:12,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:09:12,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:09:12,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:09:12,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:09:12,115 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:09:12,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c [2022-07-13 20:09:12,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1684b5ee6/c244e5d701b7437a83a42371482f0470/FLAG07f5ea072 [2022-07-13 20:09:12,852 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:09:12,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c [2022-07-13 20:09:12,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1684b5ee6/c244e5d701b7437a83a42371482f0470/FLAG07f5ea072 [2022-07-13 20:09:13,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1684b5ee6/c244e5d701b7437a83a42371482f0470 [2022-07-13 20:09:13,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:09:13,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:09:13,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:09:13,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:09:13,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:09:13,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:09:13" (1/1) ... [2022-07-13 20:09:13,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547174f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:13, skipping insertion in model container [2022-07-13 20:09:13,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:09:13" (1/1) ... [2022-07-13 20:09:13,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:09:13,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:09:14,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[380593,380606] [2022-07-13 20:09:14,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[383339,383352] [2022-07-13 20:09:14,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:09:14,708 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:09:15,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[380593,380606] [2022-07-13 20:09:15,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[383339,383352] [2022-07-13 20:09:15,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:09:15,389 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:09:15,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15 WrapperNode [2022-07-13 20:09:15,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:09:15,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:09:15,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:09:15,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:09:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:15,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:15,825 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2022-07-13 20:09:15,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:09:15,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:09:15,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:09:15,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:09:15,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:15,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:15,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:15,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:15,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:16,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:16,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:16,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:09:16,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:09:16,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:09:16,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:09:16,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (1/1) ... [2022-07-13 20:09:16,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:09:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:09:16,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:09:16,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:09:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:09:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:09:16,341 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:09:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:09:16,341 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:09:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:09:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:09:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 20:09:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 20:09:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:09:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:09:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:09:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:09:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:09:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:09:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:09:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:09:16,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:09:16,483 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:09:16,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:09:21,331 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:09:21,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:09:21,372 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 20:09:21,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:09:21 BoogieIcfgContainer [2022-07-13 20:09:21,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:09:21,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:09:21,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:09:21,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:09:21,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:09:13" (1/3) ... [2022-07-13 20:09:21,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a966ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:09:21, skipping insertion in model container [2022-07-13 20:09:21,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:09:15" (2/3) ... [2022-07-13 20:09:21,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a966ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:09:21, skipping insertion in model container [2022-07-13 20:09:21,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:09:21" (3/3) ... [2022-07-13 20:09:21,388 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.12.cil-1.c [2022-07-13 20:09:21,396 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:09:21,397 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:09:21,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:09:21,457 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@35ef04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15031b1f [2022-07-13 20:09:21,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:09:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-13 20:09:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:21,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:21,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:21,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:21,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2022-07-13 20:09:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493496953] [2022-07-13 20:09:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:21,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493496953] [2022-07-13 20:09:21,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493496953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:21,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:21,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:09:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217212351] [2022-07-13 20:09:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:09:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:09:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:09:21,939 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:23,255 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2022-07-13 20:09:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:09:23,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:23,279 INFO L225 Difference]: With dead ends: 5281 [2022-07-13 20:09:23,279 INFO L226 Difference]: Without dead ends: 2647 [2022-07-13 20:09:23,291 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 [2022-07-13 20:09:23,293 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 1048 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17178 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:23,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 17178 Invalid, 787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:09:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-07-13 20:09:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-07-13 20:09:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 20:09:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2022-07-13 20:09:23,497 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2022-07-13 20:09:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:23,497 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2022-07-13 20:09:23,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2022-07-13 20:09:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:23,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:23,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:23,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:09:23,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2022-07-13 20:09:23,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:23,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246929326] [2022-07-13 20:09:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:23,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:23,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:23,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246929326] [2022-07-13 20:09:23,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246929326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:23,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:23,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:09:23,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045747698] [2022-07-13 20:09:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:23,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:09:23,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:09:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:09:23,698 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:24,857 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2022-07-13 20:09:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:09:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:24,867 INFO L225 Difference]: With dead ends: 3016 [2022-07-13 20:09:24,868 INFO L226 Difference]: Without dead ends: 2647 [2022-07-13 20:09:24,870 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 [2022-07-13 20:09:24,871 INFO L413 NwaCegarLoop]: 4625 mSDtfsCounter, 1034 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:24,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 16905 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:09:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-07-13 20:09:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-07-13 20:09:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 20:09:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2022-07-13 20:09:24,923 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2022-07-13 20:09:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:24,924 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2022-07-13 20:09:24,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2022-07-13 20:09:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:24,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:24,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:24,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:09:24,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2022-07-13 20:09:24,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:24,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871381987] [2022-07-13 20:09:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:24,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:25,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:25,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871381987] [2022-07-13 20:09:25,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871381987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:25,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:25,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:09:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889348970] [2022-07-13 20:09:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:25,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:09:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:09:25,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:09:25,150 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:27,608 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2022-07-13 20:09:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:09:27,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:27,646 INFO L225 Difference]: With dead ends: 3535 [2022-07-13 20:09:27,647 INFO L226 Difference]: Without dead ends: 3171 [2022-07-13 20:09:27,656 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 [2022-07-13 20:09:27,658 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5525 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 17531 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:27,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5544 Valid, 17531 Invalid, 2142 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:09:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-07-13 20:09:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2022-07-13 20:09:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-13 20:09:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2022-07-13 20:09:27,851 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2022-07-13 20:09:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:27,852 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2022-07-13 20:09:27,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2022-07-13 20:09:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:27,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:27,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:09:27,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:27,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2022-07-13 20:09:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:27,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790811479] [2022-07-13 20:09:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:28,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790811479] [2022-07-13 20:09:28,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790811479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:28,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:28,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951583158] [2022-07-13 20:09:28,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:28,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:28,014 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:30,879 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2022-07-13 20:09:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:09:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:30,893 INFO L225 Difference]: With dead ends: 4458 [2022-07-13 20:09:30,894 INFO L226 Difference]: Without dead ends: 3713 [2022-07-13 20:09:30,896 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 [2022-07-13 20:09:30,897 INFO L413 NwaCegarLoop]: 4988 mSDtfsCounter, 5553 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 22772 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:30,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 22772 Invalid, 3219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 20:09:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-13 20:09:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2022-07-13 20:09:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-13 20:09:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2022-07-13 20:09:30,983 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2022-07-13 20:09:30,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:30,983 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2022-07-13 20:09:30,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2022-07-13 20:09:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:30,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:30,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:30,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:09:30,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:30,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2022-07-13 20:09:30,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:30,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802259772] [2022-07-13 20:09:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:30,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:31,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:31,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802259772] [2022-07-13 20:09:31,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802259772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:31,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:31,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846540750] [2022-07-13 20:09:31,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:31,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:31,119 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:33,844 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2022-07-13 20:09:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:09:33,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:33,864 INFO L225 Difference]: With dead ends: 5819 [2022-07-13 20:09:33,865 INFO L226 Difference]: Without dead ends: 4720 [2022-07-13 20:09:33,870 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 [2022-07-13 20:09:33,871 INFO L413 NwaCegarLoop]: 4721 mSDtfsCounter, 5664 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:33,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5683 Valid, 21831 Invalid, 2908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 20:09:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-07-13 20:09:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2022-07-13 20:09:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-13 20:09:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2022-07-13 20:09:34,013 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2022-07-13 20:09:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:34,013 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2022-07-13 20:09:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2022-07-13 20:09:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:34,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:34,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:34,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:09:34,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2022-07-13 20:09:34,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:34,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466469055] [2022-07-13 20:09:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:34,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466469055] [2022-07-13 20:09:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466469055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:34,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:34,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904482811] [2022-07-13 20:09:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:34,164 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:37,336 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2022-07-13 20:09:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:09:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:37,358 INFO L225 Difference]: With dead ends: 8436 [2022-07-13 20:09:37,359 INFO L226 Difference]: Without dead ends: 6628 [2022-07-13 20:09:37,366 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 [2022-07-13 20:09:37,367 INFO L413 NwaCegarLoop]: 4976 mSDtfsCounter, 5548 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 22760 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:37,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 22760 Invalid, 3223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 20:09:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2022-07-13 20:09:37,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2022-07-13 20:09:37,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-13 20:09:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2022-07-13 20:09:37,611 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2022-07-13 20:09:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:37,611 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2022-07-13 20:09:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2022-07-13 20:09:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:37,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:37,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:37,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:09:37,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2022-07-13 20:09:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:37,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148678312] [2022-07-13 20:09:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:37,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:37,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148678312] [2022-07-13 20:09:37,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148678312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:37,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:37,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:37,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447685798] [2022-07-13 20:09:37,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:37,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:37,770 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:40,779 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2022-07-13 20:09:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:09:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:40,835 INFO L225 Difference]: With dead ends: 13662 [2022-07-13 20:09:40,835 INFO L226 Difference]: Without dead ends: 10435 [2022-07-13 20:09:40,845 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 [2022-07-13 20:09:40,848 INFO L413 NwaCegarLoop]: 4968 mSDtfsCounter, 5543 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 22752 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5562 Valid, 22752 Invalid, 3204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 20:09:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-07-13 20:09:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2022-07-13 20:09:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-13 20:09:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2022-07-13 20:09:41,245 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2022-07-13 20:09:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:41,245 INFO L495 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2022-07-13 20:09:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2022-07-13 20:09:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:41,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:41,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:09:41,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2022-07-13 20:09:41,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:41,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231829987] [2022-07-13 20:09:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:41,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231829987] [2022-07-13 20:09:41,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231829987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:41,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:41,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278022752] [2022-07-13 20:09:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:41,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:41,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:41,355 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:44,771 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2022-07-13 20:09:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:09:44,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:44,815 INFO L225 Difference]: With dead ends: 24132 [2022-07-13 20:09:44,815 INFO L226 Difference]: Without dead ends: 18053 [2022-07-13 20:09:44,831 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 [2022-07-13 20:09:44,832 INFO L413 NwaCegarLoop]: 4963 mSDtfsCounter, 5542 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 22747 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:44,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5561 Valid, 22747 Invalid, 3196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:09:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2022-07-13 20:09:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2022-07-13 20:09:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-13 20:09:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2022-07-13 20:09:45,481 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2022-07-13 20:09:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:45,481 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2022-07-13 20:09:45,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2022-07-13 20:09:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:45,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:45,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:45,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:09:45,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:45,489 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2022-07-13 20:09:45,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:45,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602569861] [2022-07-13 20:09:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:45,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:45,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:45,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602569861] [2022-07-13 20:09:45,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602569861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:45,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:45,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:45,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219446543] [2022-07-13 20:09:45,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:45,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:45,602 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:47,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:47,935 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2022-07-13 20:09:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:09:47,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:47,981 INFO L225 Difference]: With dead ends: 30100 [2022-07-13 20:09:47,982 INFO L226 Difference]: Without dead ends: 18304 [2022-07-13 20:09:48,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:09:48,010 INFO L413 NwaCegarLoop]: 4601 mSDtfsCounter, 5093 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21397 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:48,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5113 Valid, 21397 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 20:09:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2022-07-13 20:09:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2022-07-13 20:09:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-13 20:09:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2022-07-13 20:09:48,892 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2022-07-13 20:09:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:48,892 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2022-07-13 20:09:48,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2022-07-13 20:09:48,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:48,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:48,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:48,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:09:48,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:48,899 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2022-07-13 20:09:48,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:48,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856802394] [2022-07-13 20:09:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:48,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:49,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:49,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856802394] [2022-07-13 20:09:49,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856802394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:49,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:49,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:49,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311087620] [2022-07-13 20:09:49,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:49,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:49,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:49,031 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:53,671 INFO L93 Difference]: Finished difference Result 45037 states and 72769 transitions. [2022-07-13 20:09:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:09:53,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:09:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:53,760 INFO L225 Difference]: With dead ends: 45037 [2022-07-13 20:09:53,760 INFO L226 Difference]: Without dead ends: 33241 [2022-07-13 20:09:53,789 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 [2022-07-13 20:09:53,791 INFO L413 NwaCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22736 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:53,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5553 Valid, 22736 Invalid, 3169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 20:09:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33241 states. [2022-07-13 20:09:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33241 to 25435. [2022-07-13 20:09:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25435 states, 23607 states have (on average 1.5927055534375396) internal successors, (37599), 23674 states have internal predecessors, (37599), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-07-13 20:09:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25435 states to 25435 states and 41134 transitions. [2022-07-13 20:09:55,287 INFO L78 Accepts]: Start accepts. Automaton has 25435 states and 41134 transitions. Word has length 179 [2022-07-13 20:09:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:55,288 INFO L495 AbstractCegarLoop]: Abstraction has 25435 states and 41134 transitions. [2022-07-13 20:09:55,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 25435 states and 41134 transitions. [2022-07-13 20:09:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:09:55,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:55,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:55,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:09:55,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2022-07-13 20:09:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:55,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469764333] [2022-07-13 20:09:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:09:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:09:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:09:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:09:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:55,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469764333] [2022-07-13 20:09:55,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469764333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:55,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:55,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764352441] [2022-07-13 20:09:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:55,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:55,439 INFO L87 Difference]: Start difference. First operand 25435 states and 41134 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:10:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:10:02,592 INFO L93 Difference]: Finished difference Result 86917 states and 140729 transitions. [2022-07-13 20:10:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:10:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:10:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:10:02,917 INFO L225 Difference]: With dead ends: 86917 [2022-07-13 20:10:02,917 INFO L226 Difference]: Without dead ends: 63623 [2022-07-13 20:10:02,975 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 [2022-07-13 20:10:02,975 INFO L413 NwaCegarLoop]: 4947 mSDtfsCounter, 5533 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5552 SdHoareTripleChecker+Valid, 22731 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:10:02,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5552 Valid, 22731 Invalid, 3161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 20:10:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63623 states. [2022-07-13 20:10:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63623 to 48492. [2022-07-13 20:10:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48492 states, 44872 states have (on average 1.5789133535389552) internal successors, (70849), 45003 states have internal predecessors, (70849), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-07-13 20:10:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48492 states to 48492 states and 78594 transitions. [2022-07-13 20:10:06,379 INFO L78 Accepts]: Start accepts. Automaton has 48492 states and 78594 transitions. Word has length 179 [2022-07-13 20:10:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:10:06,380 INFO L495 AbstractCegarLoop]: Abstraction has 48492 states and 78594 transitions. [2022-07-13 20:10:06,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:10:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 48492 states and 78594 transitions. [2022-07-13 20:10:06,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:10:06,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:10:06,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:10:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:10:06,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:10:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:10:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2022-07-13 20:10:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:10:06,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698667969] [2022-07-13 20:10:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:10:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:10:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:10:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:10:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:10:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:10:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:10:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:10:06,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:10:06,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698667969] [2022-07-13 20:10:06,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698667969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:10:06,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:10:06,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:10:06,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465516521] [2022-07-13 20:10:06,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:10:06,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:10:06,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:10:06,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:10:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:10:06,525 INFO L87 Difference]: Start difference. First operand 48492 states and 78594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:10:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:10:18,453 INFO L93 Difference]: Finished difference Result 170676 states and 278495 transitions. [2022-07-13 20:10:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:10:18,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:10:18,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:10:19,067 INFO L225 Difference]: With dead ends: 170676 [2022-07-13 20:10:19,068 INFO L226 Difference]: Without dead ends: 124325 [2022-07-13 20:10:19,187 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 [2022-07-13 20:10:19,188 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 5634 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21805 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:10:19,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5653 Valid, 21805 Invalid, 2861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 20:10:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124325 states. [2022-07-13 20:10:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124325 to 94733. [2022-07-13 20:10:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94733 states, 87529 states have (on average 1.5713534942704703) internal successors, (137539), 87788 states have internal predecessors, (137539), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-13 20:10:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94733 states to 94733 states and 155162 transitions. [2022-07-13 20:10:26,228 INFO L78 Accepts]: Start accepts. Automaton has 94733 states and 155162 transitions. Word has length 179 [2022-07-13 20:10:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:10:26,228 INFO L495 AbstractCegarLoop]: Abstraction has 94733 states and 155162 transitions. [2022-07-13 20:10:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:10:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 94733 states and 155162 transitions. [2022-07-13 20:10:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 20:10:26,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:10:26,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:10:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:10:26,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:10:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:10:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash 953780728, now seen corresponding path program 1 times [2022-07-13 20:10:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:10:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216820459] [2022-07-13 20:10:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:10:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:10:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:10:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 20:10:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 20:10:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:10:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 20:10:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:10:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:10:26,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:10:26,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216820459] [2022-07-13 20:10:26,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216820459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:10:26,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:10:26,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:10:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559358975] [2022-07-13 20:10:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:10:26,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:10:26,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:10:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:10:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:10:26,410 INFO L87 Difference]: Start difference. First operand 94733 states and 155162 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:10:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:10:38,466 INFO L93 Difference]: Finished difference Result 218788 states and 364993 transitions. [2022-07-13 20:10:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:10:38,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 20:10:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:10:39,055 INFO L225 Difference]: With dead ends: 218788 [2022-07-13 20:10:39,055 INFO L226 Difference]: Without dead ends: 126196