./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.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 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:19:32,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:19:32,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:19:32,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:19:32,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:19:32,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:19:32,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:19:32,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:19:32,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:19:32,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:19:32,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:19:32,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:19:32,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:19:32,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:19:32,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:19:32,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:19:32,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:19:32,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:19:32,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:19:32,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:19:32,913 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:19:32,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:19:32,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:19:32,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:19:32,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:19:32,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:19:32,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:19:32,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:19:32,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:19:32,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:19:32,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:19:32,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:19:32,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:19:32,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:19:32,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:19:32,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:19:32,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:19:32,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:19:32,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:19:32,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:19:32,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:19:32,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:19:32,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:19:32,954 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:19:32,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:19:32,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:19:32,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:19:32,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:19:32,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:19:32,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:19:32,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:19:32,957 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:19:32,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:19:32,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:19:32,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:19:32,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:19:32,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:19:32,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:19:32,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:19:32,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:19:32,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:19:32,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:19:32,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:19:32,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:19:32,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:19:32,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:19:32,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:19:32,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:19:32,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:19:32,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:19:32,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 [2022-07-19 19:19:33,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:19:33,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:19:33,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:19:33,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:19:33,153 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:19:33,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2022-07-19 19:19:33,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06416c16/ae6709f84c834539a3cf27b204121576/FLAGfdb51e23d [2022-07-19 19:19:33,941 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:19:33,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2022-07-19 19:19:33,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06416c16/ae6709f84c834539a3cf27b204121576/FLAGfdb51e23d [2022-07-19 19:19:34,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06416c16/ae6709f84c834539a3cf27b204121576 [2022-07-19 19:19:34,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:19:34,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:19:34,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:19:34,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:19:34,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:19:34,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:19:34" (1/1) ... [2022-07-19 19:19:34,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2d4ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:34, skipping insertion in model container [2022-07-19 19:19:34,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:19:34" (1/1) ... [2022-07-19 19:19:34,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:19:34,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:19:36,021 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_label43+token_ring.05.cil-1.c[381679,381692] [2022-07-19 19:19:36,039 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_label43+token_ring.05.cil-1.c[383339,383352] [2022-07-19 19:19:36,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:19:36,288 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:19:36,906 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_label43+token_ring.05.cil-1.c[381679,381692] [2022-07-19 19:19:36,910 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_label43+token_ring.05.cil-1.c[383339,383352] [2022-07-19 19:19:36,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:19:36,971 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:19:36,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36 WrapperNode [2022-07-19 19:19:36,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:19:36,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:19:36,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:19:36,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:19:36,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,432 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2022-07-19 19:19:37,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:19:37,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:19:37,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:19:37,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:19:37,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:19:37,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:19:37,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:19:37,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:19:37,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (1/1) ... [2022-07-19 19:19:37,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:19:37,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:19:37,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:19:37,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:19:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:19:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:19:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:19:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:19:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:19:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:19:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:19:38,091 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:19:38,093 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:19:43,108 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:19:43,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:19:43,126 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-19 19:19:43,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:19:43 BoogieIcfgContainer [2022-07-19 19:19:43,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:19:43,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:19:43,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:19:43,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:19:43,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:19:34" (1/3) ... [2022-07-19 19:19:43,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6106701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:19:43, skipping insertion in model container [2022-07-19 19:19:43,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:19:36" (2/3) ... [2022-07-19 19:19:43,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6106701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:19:43, skipping insertion in model container [2022-07-19 19:19:43,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:19:43" (3/3) ... [2022-07-19 19:19:43,135 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-1.c [2022-07-19 19:19:43,144 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:19:43,144 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:19:43,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:19:43,203 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@59359a42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62d49f9d [2022-07-19 19:19:43,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:19:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 19:19:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:43,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:43,222 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] [2022-07-19 19:19:43,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:43,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2022-07-19 19:19:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:43,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355657579] [2022-07-19 19:19:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:43,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:43,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355657579] [2022-07-19 19:19:43,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355657579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:43,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:43,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:19:43,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974926372] [2022-07-19 19:19:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:43,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:19:43,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:43,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:19:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:19:43,471 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:44,147 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2022-07-19 19:19:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:19:44,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:44,166 INFO L225 Difference]: With dead ends: 4837 [2022-07-19 19:19:44,167 INFO L226 Difference]: Without dead ends: 2388 [2022-07-19 19:19:44,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:19:44,176 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16644 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:44,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 16644 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 19:19:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2022-07-19 19:19:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2022-07-19 19:19:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 19:19:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2022-07-19 19:19:44,264 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2022-07-19 19:19:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:44,265 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2022-07-19 19:19:44,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2022-07-19 19:19:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:44,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:44,269 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] [2022-07-19 19:19:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:19:44,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2022-07-19 19:19:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:44,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277869059] [2022-07-19 19:19:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:44,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277869059] [2022-07-19 19:19:44,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277869059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:44,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:44,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:19:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787587232] [2022-07-19 19:19:44,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:19:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:19:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:19:44,396 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:45,503 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2022-07-19 19:19:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:19:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:45,514 INFO L225 Difference]: With dead ends: 2835 [2022-07-19 19:19:45,515 INFO L226 Difference]: Without dead ends: 2646 [2022-07-19 19:19:45,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:19:45,518 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16693 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:45,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 16693 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:19:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-19 19:19:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2022-07-19 19:19:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-19 19:19:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2022-07-19 19:19:45,622 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2022-07-19 19:19:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:45,623 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2022-07-19 19:19:45,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2022-07-19 19:19:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:45,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:45,626 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] [2022-07-19 19:19:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:19:45,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2022-07-19 19:19:45,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:45,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617127926] [2022-07-19 19:19:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:45,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:45,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617127926] [2022-07-19 19:19:45,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617127926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:45,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:45,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211626909] [2022-07-19 19:19:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:45,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:45,787 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:47,107 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2022-07-19 19:19:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:19:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:47,118 INFO L225 Difference]: With dead ends: 3293 [2022-07-19 19:19:47,118 INFO L226 Difference]: Without dead ends: 2910 [2022-07-19 19:19:47,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:19:47,121 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21269 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 21269 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:19:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-07-19 19:19:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2022-07-19 19:19:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-19 19:19:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2022-07-19 19:19:47,188 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2022-07-19 19:19:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:47,188 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2022-07-19 19:19:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2022-07-19 19:19:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:47,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:47,191 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] [2022-07-19 19:19:47,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:19:47,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2022-07-19 19:19:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751636657] [2022-07-19 19:19:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:47,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:47,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751636657] [2022-07-19 19:19:47,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751636657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:47,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:47,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253135398] [2022-07-19 19:19:47,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:47,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:47,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:47,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:47,349 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:48,531 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2022-07-19 19:19:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:19:48,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:48,543 INFO L225 Difference]: With dead ends: 3966 [2022-07-19 19:19:48,543 INFO L226 Difference]: Without dead ends: 3402 [2022-07-19 19:19:48,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:19:48,546 INFO L413 NwaCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:48,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 21257 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:19:48,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2022-07-19 19:19:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2022-07-19 19:19:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-19 19:19:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2022-07-19 19:19:48,612 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2022-07-19 19:19:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:48,612 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2022-07-19 19:19:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2022-07-19 19:19:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:48,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:48,614 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] [2022-07-19 19:19:48,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:19:48,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2022-07-19 19:19:48,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:48,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057826020] [2022-07-19 19:19:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:48,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:48,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:48,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:48,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:48,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057826020] [2022-07-19 19:19:48,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057826020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:48,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:48,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94098921] [2022-07-19 19:19:48,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:48,684 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:49,920 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2022-07-19 19:19:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:19:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:49,935 INFO L225 Difference]: With dead ends: 5270 [2022-07-19 19:19:49,935 INFO L226 Difference]: Without dead ends: 4340 [2022-07-19 19:19:49,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:19:49,940 INFO L413 NwaCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21252 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:49,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4716 Valid, 21252 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:19:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-07-19 19:19:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2022-07-19 19:19:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-19 19:19:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2022-07-19 19:19:50,115 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2022-07-19 19:19:50,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:50,116 INFO L495 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2022-07-19 19:19:50,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2022-07-19 19:19:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:50,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:50,118 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] [2022-07-19 19:19:50,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:19:50,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2022-07-19 19:19:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:50,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683663564] [2022-07-19 19:19:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:50,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:50,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683663564] [2022-07-19 19:19:50,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683663564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:50,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:50,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192077142] [2022-07-19 19:19:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:50,204 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:51,432 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2022-07-19 19:19:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:19:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:51,453 INFO L225 Difference]: With dead ends: 7877 [2022-07-19 19:19:51,453 INFO L226 Difference]: Without dead ends: 6214 [2022-07-19 19:19:51,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:19:51,465 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21247 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:51,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 21247 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:19:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2022-07-19 19:19:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2022-07-19 19:19:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-19 19:19:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2022-07-19 19:19:51,619 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2022-07-19 19:19:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:51,620 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2022-07-19 19:19:51,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2022-07-19 19:19:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:51,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:51,623 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] [2022-07-19 19:19:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:19:51,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2022-07-19 19:19:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:51,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108557086] [2022-07-19 19:19:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:51,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:51,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108557086] [2022-07-19 19:19:51,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108557086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:51,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:51,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478845982] [2022-07-19 19:19:51,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:51,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:51,712 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:53,177 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2022-07-19 19:19:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:19:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:53,208 INFO L225 Difference]: With dead ends: 14356 [2022-07-19 19:19:53,209 INFO L226 Difference]: Without dead ends: 11220 [2022-07-19 19:19:53,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:19:53,220 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16488 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20807 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:53,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4981 Valid, 20807 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:19:53,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2022-07-19 19:19:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2022-07-19 19:19:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-19 19:19:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2022-07-19 19:19:53,614 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2022-07-19 19:19:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:53,615 INFO L495 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2022-07-19 19:19:53,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2022-07-19 19:19:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:53,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:53,620 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] [2022-07-19 19:19:53,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:19:53,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2022-07-19 19:19:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:53,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530044157] [2022-07-19 19:19:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:53,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:53,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:53,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530044157] [2022-07-19 19:19:53,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530044157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:53,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:53,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:53,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664832081] [2022-07-19 19:19:53,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:53,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:53,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:53,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:53,684 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:55,833 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2022-07-19 19:19:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:19:55,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:55,937 INFO L225 Difference]: With dead ends: 25523 [2022-07-19 19:19:55,937 INFO L226 Difference]: Without dead ends: 19474 [2022-07-19 19:19:55,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:19:55,992 INFO L413 NwaCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:55,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 21299 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:19:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2022-07-19 19:19:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2022-07-19 19:19:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-19 19:19:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2022-07-19 19:19:56,829 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2022-07-19 19:19:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:56,829 INFO L495 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2022-07-19 19:19:56,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:56,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2022-07-19 19:19:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:19:56,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:56,840 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] [2022-07-19 19:19:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:19:56,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2022-07-19 19:19:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:56,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281317985] [2022-07-19 19:19:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:56,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:19:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:19:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:19:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:19:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281317985] [2022-07-19 19:19:56,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281317985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:56,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:56,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:56,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809697286] [2022-07-19 19:19:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:56,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:56,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:56,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:56,928 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:59,572 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2022-07-19 19:19:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:19:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:19:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:59,667 INFO L225 Difference]: With dead ends: 46786 [2022-07-19 19:19:59,668 INFO L226 Difference]: Without dead ends: 35088 [2022-07-19 19:19:59,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:19:59,703 INFO L413 NwaCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21222 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:59,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 21222 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:19:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2022-07-19 19:20:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2022-07-19 19:20:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-19 19:20:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2022-07-19 19:20:00,791 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2022-07-19 19:20:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:20:00,791 INFO L495 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2022-07-19 19:20:00,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2022-07-19 19:20:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:20:00,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:20:00,807 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] [2022-07-19 19:20:00,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:20:00,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:20:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:20:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2022-07-19 19:20:00,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:20:00,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894576598] [2022-07-19 19:20:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:20:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:20:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:20:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:20:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:20:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:20:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:20:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:20:00,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:20:00,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894576598] [2022-07-19 19:20:00,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894576598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:20:00,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:20:00,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:20:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520255369] [2022-07-19 19:20:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:20:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:20:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:20:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:20:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:20:00,890 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:20:05,260 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2022-07-19 19:20:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:20:05,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:20:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:20:05,466 INFO L225 Difference]: With dead ends: 88545 [2022-07-19 19:20:05,467 INFO L226 Difference]: Without dead ends: 65422 [2022-07-19 19:20:05,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:20:05,536 INFO L413 NwaCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21215 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:20:05,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21215 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:20:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2022-07-19 19:20:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2022-07-19 19:20:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-19 19:20:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2022-07-19 19:20:07,840 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2022-07-19 19:20:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:20:07,840 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2022-07-19 19:20:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2022-07-19 19:20:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:20:07,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:20:07,871 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] [2022-07-19 19:20:07,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:20:07,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:20:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:20:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2022-07-19 19:20:07,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:20:07,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380327076] [2022-07-19 19:20:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:20:07,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:20:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:20:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:20:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:20:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:20:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:20:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:20:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:20:07,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380327076] [2022-07-19 19:20:07,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380327076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:20:07,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:20:07,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:20:07,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015370323] [2022-07-19 19:20:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:20:07,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:20:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:20:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:20:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:20:07,963 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:20:11,877 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2022-07-19 19:20:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:20:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:20:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:20:12,167 INFO L225 Difference]: With dead ends: 105804 [2022-07-19 19:20:12,167 INFO L226 Difference]: Without dead ends: 59896 [2022-07-19 19:20:12,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:20:12,430 INFO L413 NwaCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16313 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20555 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:20:12,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4521 Valid, 20555 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 19:20:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2022-07-19 19:20:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2022-07-19 19:20:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-19 19:20:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2022-07-19 19:20:15,053 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2022-07-19 19:20:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:20:15,053 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2022-07-19 19:20:15,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2022-07-19 19:20:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:20:15,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:20:15,076 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] [2022-07-19 19:20:15,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:20:15,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:20:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:20:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2022-07-19 19:20:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:20:15,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314095507] [2022-07-19 19:20:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:20:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:20:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:20:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:20:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:20:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:20:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:20:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:20:15,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:20:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314095507] [2022-07-19 19:20:15,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314095507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:20:15,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:20:15,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:20:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874201158] [2022-07-19 19:20:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:20:15,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:20:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:20:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:20:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:20:15,139 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:20,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:20:20,876 INFO L93 Difference]: Finished difference Result 133917 states and 218160 transitions. [2022-07-19 19:20:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:20:20,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-19 19:20:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:20:21,181 INFO L225 Difference]: With dead ends: 133917 [2022-07-19 19:20:21,181 INFO L226 Difference]: Without dead ends: 88010 [2022-07-19 19:20:21,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 19:20:21,309 INFO L413 NwaCegarLoop]: 4560 mSDtfsCounter, 4915 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 17058 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 19:20:21,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 17058 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 19:20:21,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88010 states. [2022-07-19 19:20:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88010 to 70805. [2022-07-19 19:20:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70805 states, 63397 states have (on average 1.525561146426487) internal successors, (96716), 63912 states have internal predecessors, (96716), 4706 states have call successors, (4706), 2316 states have call predecessors, (4706), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-19 19:20:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70805 states to 70805 states and 115133 transitions. [2022-07-19 19:20:25,238 INFO L78 Accepts]: Start accepts. Automaton has 70805 states and 115133 transitions. Word has length 101 [2022-07-19 19:20:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:20:25,238 INFO L495 AbstractCegarLoop]: Abstraction has 70805 states and 115133 transitions. [2022-07-19 19:20:25,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:20:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 70805 states and 115133 transitions. [2022-07-19 19:20:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-19 19:20:25,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:20:25,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:20:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:20:25,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:20:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:20:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1967377923, now seen corresponding path program 1 times [2022-07-19 19:20:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:20:25,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837981702] [2022-07-19 19:20:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:20:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:20:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:20:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:20:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:20:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:20:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:20:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 19:20:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:20:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 19:20:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 19:20:25,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:20:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837981702] [2022-07-19 19:20:25,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837981702] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:20:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808236874] [2022-07-19 19:20:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:20:25,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:20:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:20:25,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:20:25,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 19:20:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:20:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:20:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:20:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 19:20:25,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:20:25,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808236874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:20:25,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:20:25,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 19:20:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788021970] [2022-07-19 19:20:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:20:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:20:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:20:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:20:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:20:25,837 INFO L87 Difference]: Start difference. First operand 70805 states and 115133 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 19:20:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:20:31,939 INFO L93 Difference]: Finished difference Result 206790 states and 337441 transitions. [2022-07-19 19:20:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:20:31,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 164 [2022-07-19 19:20:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:20:32,637 INFO L225 Difference]: With dead ends: 206790 [2022-07-19 19:20:32,637 INFO L226 Difference]: Without dead ends: 138120 [2022-07-19 19:20:32,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:20:32,774 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 4192 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:20:32,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4192 Valid, 4549 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:20:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138120 states.