./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/transmitter.04.cil.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 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:36:02,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:36:02,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:36:02,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:36:02,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:36:02,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:36:02,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:36:02,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:36:02,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:36:02,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:36:02,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:36:02,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:36:02,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:36:02,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:36:02,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:36:02,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:36:02,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:36:02,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:36:02,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:36:02,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:36:02,929 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:36:02,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:36:02,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:36:02,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:36:02,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:36:02,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:36:02,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:36:02,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:36:02,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:36:02,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:36:02,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:36:02,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:36:02,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:36:02,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:36:02,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:36:02,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:36:02,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:36:02,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:36:02,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:36:02,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:36:02,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:36:02,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:36:02,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:36:02,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:36:02,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:36:02,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:36:02,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:36:02,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:36:02,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:36:02,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:36:02,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:36:02,973 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:36:02,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:36:02,974 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:36:02,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:36:02,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:36:02,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:36:02,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:36:02,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:36:02,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:36:02,975 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:36:02,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:36:02,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:36:02,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:36:02,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:36:02,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:36:02,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:36:02,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:36:02,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:36:02,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:36:02,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:36:02,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:36:02,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:36:02,977 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:36:02,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:36:02,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:36:02,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa [2022-07-12 06:36:03,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:36:03,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:36:03,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:36:03,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:36:03,180 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:36:03,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-07-12 06:36:03,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247de5de2/5f35374c9c6f46c2920e4eeaecd2b06b/FLAG67ba5caf8 [2022-07-12 06:36:03,536 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:36:03,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-07-12 06:36:03,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247de5de2/5f35374c9c6f46c2920e4eeaecd2b06b/FLAG67ba5caf8 [2022-07-12 06:36:03,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247de5de2/5f35374c9c6f46c2920e4eeaecd2b06b [2022-07-12 06:36:03,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:36:03,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:36:03,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:36:03,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:36:03,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:36:03,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:36:03" (1/1) ... [2022-07-12 06:36:03,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc4086d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:03, skipping insertion in model container [2022-07-12 06:36:03,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:36:03" (1/1) ... [2022-07-12 06:36:03,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:36:04,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:36:04,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.04.cil.c[706,719] [2022-07-12 06:36:04,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:36:04,155 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:36:04,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.04.cil.c[706,719] [2022-07-12 06:36:04,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:36:04,194 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:36:04,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04 WrapperNode [2022-07-12 06:36:04,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:36:04,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:36:04,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:36:04,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:36:04,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,235 INFO L137 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 378 [2022-07-12 06:36:04,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:36:04,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:36:04,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:36:04,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:36:04,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:36:04,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:36:04,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:36:04,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:36:04,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (1/1) ... [2022-07-12 06:36:04,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:36:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:36:04,311 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) [2022-07-12 06:36:04,332 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 [2022-07-12 06:36:04,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:36:04,348 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 06:36:04,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 06:36:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 06:36:04,349 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 06:36:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 06:36:04,349 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 06:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 06:36:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 06:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 06:36:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 06:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 06:36:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 06:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:36:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:36:04,425 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:36:04,426 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:36:04,720 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:36:04,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:36:04,726 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 06:36:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:36:04 BoogieIcfgContainer [2022-07-12 06:36:04,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:36:04,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:36:04,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:36:04,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:36:04,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:36:03" (1/3) ... [2022-07-12 06:36:04,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6d03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:36:04, skipping insertion in model container [2022-07-12 06:36:04,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:36:04" (2/3) ... [2022-07-12 06:36:04,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6d03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:36:04, skipping insertion in model container [2022-07-12 06:36:04,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:36:04" (3/3) ... [2022-07-12 06:36:04,741 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2022-07-12 06:36:04,753 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:36:04,754 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:36:04,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:36:04,795 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@65e8ca19, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a1fc9d8 [2022-07-12 06:36:04,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:36:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 06:36:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:04,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:04,810 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] [2022-07-12 06:36:04,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:04,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1239760114, now seen corresponding path program 1 times [2022-07-12 06:36:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:04,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107296150] [2022-07-12 06:36:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:05,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:05,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107296150] [2022-07-12 06:36:05,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107296150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:05,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:05,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:36:05,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694946319] [2022-07-12 06:36:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:05,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:36:05,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:36:05,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:36:05,183 INFO L87 Difference]: Start difference. First operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-12 06:36:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:06,104 INFO L93 Difference]: Finished difference Result 613 states and 986 transitions. [2022-07-12 06:36:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:36:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:06,115 INFO L225 Difference]: With dead ends: 613 [2022-07-12 06:36:06,115 INFO L226 Difference]: Without dead ends: 439 [2022-07-12 06:36:06,118 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 [2022-07-12 06:36:06,120 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 612 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:06,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 766 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:36:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-12 06:36:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 335. [2022-07-12 06:36:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 294 states have internal predecessors, (441), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-12 06:36:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2022-07-12 06:36:06,201 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 91 [2022-07-12 06:36:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:06,202 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2022-07-12 06:36:06,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-12 06:36:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2022-07-12 06:36:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:06,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:06,205 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] [2022-07-12 06:36:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:36:06,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash -233016211, now seen corresponding path program 1 times [2022-07-12 06:36:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:06,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539492964] [2022-07-12 06:36:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539492964] [2022-07-12 06:36:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539492964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:06,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:06,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294493538] [2022-07-12 06:36:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:06,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:06,318 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:07,411 INFO L93 Difference]: Finished difference Result 1045 states and 1585 transitions. [2022-07-12 06:36:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:36:07,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:07,419 INFO L225 Difference]: With dead ends: 1045 [2022-07-12 06:36:07,419 INFO L226 Difference]: Without dead ends: 722 [2022-07-12 06:36:07,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:36:07,428 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 647 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:07,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1335 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:36:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-12 06:36:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 487. [2022-07-12 06:36:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 425 states have (on average 1.5011764705882353) internal successors, (638), 428 states have internal predecessors, (638), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-12 06:36:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 725 transitions. [2022-07-12 06:36:07,478 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 725 transitions. Word has length 91 [2022-07-12 06:36:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:07,480 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 725 transitions. [2022-07-12 06:36:07,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 725 transitions. [2022-07-12 06:36:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:07,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:07,486 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] [2022-07-12 06:36:07,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:36:07,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1984614187, now seen corresponding path program 1 times [2022-07-12 06:36:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:07,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802212204] [2022-07-12 06:36:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:07,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:07,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802212204] [2022-07-12 06:36:07,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802212204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:07,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:07,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:07,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179154797] [2022-07-12 06:36:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:07,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:07,583 INFO L87 Difference]: Start difference. First operand 487 states and 725 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:08,572 INFO L93 Difference]: Finished difference Result 1603 states and 2422 transitions. [2022-07-12 06:36:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:36:08,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:08,578 INFO L225 Difference]: With dead ends: 1603 [2022-07-12 06:36:08,578 INFO L226 Difference]: Without dead ends: 1128 [2022-07-12 06:36:08,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:36:08,580 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 644 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:08,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1327 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:36:08,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-07-12 06:36:08,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 792. [2022-07-12 06:36:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 692 states have (on average 1.4927745664739884) internal successors, (1033), 697 states have internal predecessors, (1033), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-12 06:36:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1176 transitions. [2022-07-12 06:36:08,610 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1176 transitions. Word has length 91 [2022-07-12 06:36:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:08,610 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1176 transitions. [2022-07-12 06:36:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1176 transitions. [2022-07-12 06:36:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:08,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:08,612 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] [2022-07-12 06:36:08,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:36:08,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:08,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash -576248659, now seen corresponding path program 1 times [2022-07-12 06:36:08,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:08,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179922603] [2022-07-12 06:36:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:08,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:08,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179922603] [2022-07-12 06:36:08,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179922603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:08,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:08,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994778115] [2022-07-12 06:36:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:08,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:08,684 INFO L87 Difference]: Start difference. First operand 792 states and 1176 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:09,686 INFO L93 Difference]: Finished difference Result 2682 states and 4037 transitions. [2022-07-12 06:36:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:36:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:09,696 INFO L225 Difference]: With dead ends: 2682 [2022-07-12 06:36:09,696 INFO L226 Difference]: Without dead ends: 1902 [2022-07-12 06:36:09,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:36:09,706 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 688 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:09,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 955 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:36:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-07-12 06:36:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1403. [2022-07-12 06:36:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1227 states have (on average 1.4857375713121435) internal successors, (1823), 1236 states have internal predecessors, (1823), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-12 06:36:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2084 transitions. [2022-07-12 06:36:09,800 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2084 transitions. Word has length 91 [2022-07-12 06:36:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:09,801 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 2084 transitions. [2022-07-12 06:36:09,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2084 transitions. [2022-07-12 06:36:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:09,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:09,807 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] [2022-07-12 06:36:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:36:09,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 310974187, now seen corresponding path program 1 times [2022-07-12 06:36:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672350145] [2022-07-12 06:36:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:09,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:09,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:09,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672350145] [2022-07-12 06:36:09,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672350145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:09,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:09,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:09,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663597308] [2022-07-12 06:36:09,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:09,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:09,908 INFO L87 Difference]: Start difference. First operand 1403 states and 2084 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:10,996 INFO L93 Difference]: Finished difference Result 4839 states and 7283 transitions. [2022-07-12 06:36:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:36:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:11,010 INFO L225 Difference]: With dead ends: 4839 [2022-07-12 06:36:11,010 INFO L226 Difference]: Without dead ends: 3448 [2022-07-12 06:36:11,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:36:11,014 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 636 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:11,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1319 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:36:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2022-07-12 06:36:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 2630. [2022-07-12 06:36:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2302 states have (on average 1.4808861859252824) internal successors, (3409), 2319 states have internal predecessors, (3409), 209 states have call successors, (209), 102 states have call predecessors, (209), 118 states have return successors, (306), 224 states have call predecessors, (306), 209 states have call successors, (306) [2022-07-12 06:36:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3924 transitions. [2022-07-12 06:36:11,122 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3924 transitions. Word has length 91 [2022-07-12 06:36:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:11,122 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 3924 transitions. [2022-07-12 06:36:11,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3924 transitions. [2022-07-12 06:36:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:11,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:11,126 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] [2022-07-12 06:36:11,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:36:11,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1600068371, now seen corresponding path program 1 times [2022-07-12 06:36:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:11,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954910969] [2022-07-12 06:36:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:11,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:11,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954910969] [2022-07-12 06:36:11,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954910969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:11,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:11,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:11,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631490615] [2022-07-12 06:36:11,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:11,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:11,201 INFO L87 Difference]: Start difference. First operand 2630 states and 3924 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:12,503 INFO L93 Difference]: Finished difference Result 10016 states and 15083 transitions. [2022-07-12 06:36:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 06:36:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:12,563 INFO L225 Difference]: With dead ends: 10016 [2022-07-12 06:36:12,564 INFO L226 Difference]: Without dead ends: 7398 [2022-07-12 06:36:12,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 06:36:12,573 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 665 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:12,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1305 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:36:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2022-07-12 06:36:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 5033. [2022-07-12 06:36:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4417 states have (on average 1.4831333484265339) internal successors, (6551), 4450 states have internal predecessors, (6551), 385 states have call successors, (385), 198 states have call predecessors, (385), 230 states have return successors, (660), 416 states have call predecessors, (660), 385 states have call successors, (660) [2022-07-12 06:36:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 7596 transitions. [2022-07-12 06:36:12,814 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 7596 transitions. Word has length 91 [2022-07-12 06:36:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:12,814 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 7596 transitions. [2022-07-12 06:36:12,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 7596 transitions. [2022-07-12 06:36:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:12,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:12,820 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] [2022-07-12 06:36:12,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:36:12,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1523167573, now seen corresponding path program 1 times [2022-07-12 06:36:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:12,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49657407] [2022-07-12 06:36:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:12,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:12,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49657407] [2022-07-12 06:36:12,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49657407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:12,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:12,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121911713] [2022-07-12 06:36:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:12,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:12,909 INFO L87 Difference]: Start difference. First operand 5033 states and 7596 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:14,331 INFO L93 Difference]: Finished difference Result 18865 states and 28677 transitions. [2022-07-12 06:36:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 06:36:14,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:14,403 INFO L225 Difference]: With dead ends: 18865 [2022-07-12 06:36:14,403 INFO L226 Difference]: Without dead ends: 13844 [2022-07-12 06:36:14,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 06:36:14,421 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 727 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:14,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1255 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:36:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13844 states. [2022-07-12 06:36:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13844 to 9836. [2022-07-12 06:36:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 8660 states have (on average 1.4851039260969976) internal successors, (12861), 8725 states have internal predecessors, (12861), 721 states have call successors, (721), 390 states have call predecessors, (721), 454 states have return successors, (1514), 784 states have call predecessors, (1514), 721 states have call successors, (1514) [2022-07-12 06:36:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 15096 transitions. [2022-07-12 06:36:14,923 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 15096 transitions. Word has length 91 [2022-07-12 06:36:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:14,923 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 15096 transitions. [2022-07-12 06:36:14,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 15096 transitions. [2022-07-12 06:36:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:14,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:14,935 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] [2022-07-12 06:36:14,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:36:14,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1804449069, now seen corresponding path program 1 times [2022-07-12 06:36:14,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:14,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128821741] [2022-07-12 06:36:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:14,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:14,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:15,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128821741] [2022-07-12 06:36:15,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128821741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:15,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:15,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594766475] [2022-07-12 06:36:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:15,017 INFO L87 Difference]: Start difference. First operand 9836 states and 15096 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:16,920 INFO L93 Difference]: Finished difference Result 35059 states and 54211 transitions. [2022-07-12 06:36:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 06:36:16,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:17,013 INFO L225 Difference]: With dead ends: 35059 [2022-07-12 06:36:17,013 INFO L226 Difference]: Without dead ends: 25235 [2022-07-12 06:36:17,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 06:36:17,048 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 629 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:17,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1292 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:36:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25235 states. [2022-07-12 06:36:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25235 to 19472. [2022-07-12 06:36:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19472 states, 17208 states have (on average 1.4898303114830311) internal successors, (25637), 17337 states have internal predecessors, (25637), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-12 06:36:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19472 states to 19472 states and 30674 transitions. [2022-07-12 06:36:17,897 INFO L78 Accepts]: Start accepts. Automaton has 19472 states and 30674 transitions. Word has length 91 [2022-07-12 06:36:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:17,898 INFO L495 AbstractCegarLoop]: Abstraction has 19472 states and 30674 transitions. [2022-07-12 06:36:17,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 19472 states and 30674 transitions. [2022-07-12 06:36:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:17,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:17,919 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] [2022-07-12 06:36:17,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:36:17,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:17,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1311822895, now seen corresponding path program 1 times [2022-07-12 06:36:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:17,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955540736] [2022-07-12 06:36:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:17,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:18,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955540736] [2022-07-12 06:36:18,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955540736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:18,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:18,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:18,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637577229] [2022-07-12 06:36:18,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:18,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:18,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:18,007 INFO L87 Difference]: Start difference. First operand 19472 states and 30674 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:19,708 INFO L93 Difference]: Finished difference Result 42704 states and 67413 transitions. [2022-07-12 06:36:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:36:19,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:19,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:19,782 INFO L225 Difference]: With dead ends: 42704 [2022-07-12 06:36:19,782 INFO L226 Difference]: Without dead ends: 23245 [2022-07-12 06:36:19,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:36:19,829 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:19,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 846 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:36:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23245 states. [2022-07-12 06:36:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23245 to 19475. [2022-07-12 06:36:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19475 states, 17211 states have (on average 1.4823078263900993) internal successors, (25512), 17340 states have internal predecessors, (25512), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-12 06:36:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19475 states to 19475 states and 30549 transitions. [2022-07-12 06:36:20,679 INFO L78 Accepts]: Start accepts. Automaton has 19475 states and 30549 transitions. Word has length 91 [2022-07-12 06:36:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:20,680 INFO L495 AbstractCegarLoop]: Abstraction has 19475 states and 30549 transitions. [2022-07-12 06:36:20,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19475 states and 30549 transitions. [2022-07-12 06:36:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:20,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:20,697 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] [2022-07-12 06:36:20,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:36:20,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1513646829, now seen corresponding path program 1 times [2022-07-12 06:36:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:20,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643385278] [2022-07-12 06:36:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:20,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:20,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643385278] [2022-07-12 06:36:20,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643385278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:20,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:20,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:20,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703227176] [2022-07-12 06:36:20,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:20,772 INFO L87 Difference]: Start difference. First operand 19475 states and 30549 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:23,345 INFO L93 Difference]: Finished difference Result 50130 states and 77784 transitions. [2022-07-12 06:36:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 06:36:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:23,463 INFO L225 Difference]: With dead ends: 50130 [2022-07-12 06:36:23,464 INFO L226 Difference]: Without dead ends: 30668 [2022-07-12 06:36:23,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:36:23,501 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:23,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 835 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:36:23,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30668 states. [2022-07-12 06:36:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30668 to 19862. [2022-07-12 06:36:24,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19862 states, 17598 states have (on average 1.4717013296965564) internal successors, (25899), 17727 states have internal predecessors, (25899), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-12 06:36:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19862 states to 19862 states and 30936 transitions. [2022-07-12 06:36:24,458 INFO L78 Accepts]: Start accepts. Automaton has 19862 states and 30936 transitions. Word has length 91 [2022-07-12 06:36:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:24,459 INFO L495 AbstractCegarLoop]: Abstraction has 19862 states and 30936 transitions. [2022-07-12 06:36:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 19862 states and 30936 transitions. [2022-07-12 06:36:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:24,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:24,475 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] [2022-07-12 06:36:24,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:36:24,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1905301461, now seen corresponding path program 1 times [2022-07-12 06:36:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460888672] [2022-07-12 06:36:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:24,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:24,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460888672] [2022-07-12 06:36:24,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460888672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:24,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:24,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728463922] [2022-07-12 06:36:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:24,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:24,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:24,575 INFO L87 Difference]: Start difference. First operand 19862 states and 30936 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:29,352 INFO L93 Difference]: Finished difference Result 88631 states and 139259 transitions. [2022-07-12 06:36:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 06:36:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:29,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:29,584 INFO L225 Difference]: With dead ends: 88631 [2022-07-12 06:36:29,584 INFO L226 Difference]: Without dead ends: 68782 [2022-07-12 06:36:29,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-12 06:36:29,655 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1546 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:29,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1131 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:36:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68782 states. [2022-07-12 06:36:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68782 to 56490. [2022-07-12 06:36:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56490 states, 49916 states have (on average 1.474136549402997) internal successors, (73583), 50431 states have internal predecessors, (73583), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-07-12 06:36:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56490 states to 56490 states and 88086 transitions. [2022-07-12 06:36:32,904 INFO L78 Accepts]: Start accepts. Automaton has 56490 states and 88086 transitions. Word has length 91 [2022-07-12 06:36:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:32,904 INFO L495 AbstractCegarLoop]: Abstraction has 56490 states and 88086 transitions. [2022-07-12 06:36:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 56490 states and 88086 transitions. [2022-07-12 06:36:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:32,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:32,921 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] [2022-07-12 06:36:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:36:32,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1688097610, now seen corresponding path program 1 times [2022-07-12 06:36:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:32,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936205936] [2022-07-12 06:36:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936205936] [2022-07-12 06:36:32,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936205936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:32,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:32,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057258041] [2022-07-12 06:36:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:32,999 INFO L87 Difference]: Start difference. First operand 56490 states and 88086 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:38,880 INFO L93 Difference]: Finished difference Result 134367 states and 210531 transitions. [2022-07-12 06:36:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 06:36:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:39,167 INFO L225 Difference]: With dead ends: 134367 [2022-07-12 06:36:39,167 INFO L226 Difference]: Without dead ends: 77890 [2022-07-12 06:36:39,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:36:39,311 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 408 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:39,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 827 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:36:39,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77890 states. [2022-07-12 06:36:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77890 to 57072. [2022-07-12 06:36:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57072 states, 50498 states have (on average 1.464830290308527) internal successors, (73971), 51013 states have internal predecessors, (73971), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-07-12 06:36:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57072 states to 57072 states and 88474 transitions. [2022-07-12 06:36:43,176 INFO L78 Accepts]: Start accepts. Automaton has 57072 states and 88474 transitions. Word has length 91 [2022-07-12 06:36:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:43,177 INFO L495 AbstractCegarLoop]: Abstraction has 57072 states and 88474 transitions. [2022-07-12 06:36:43,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-12 06:36:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 57072 states and 88474 transitions. [2022-07-12 06:36:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:43,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:43,192 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] [2022-07-12 06:36:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:36:43,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:43,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -667707640, now seen corresponding path program 1 times [2022-07-12 06:36:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:43,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89019620] [2022-07-12 06:36:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:43,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89019620] [2022-07-12 06:36:43,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89019620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:43,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:43,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:36:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149153109] [2022-07-12 06:36:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:36:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:36:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:36:43,249 INFO L87 Difference]: Start difference. First operand 57072 states and 88474 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-12 06:36:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:36:51,902 INFO L93 Difference]: Finished difference Result 192369 states and 297483 transitions. [2022-07-12 06:36:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:36:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2022-07-12 06:36:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:36:52,575 INFO L225 Difference]: With dead ends: 192369 [2022-07-12 06:36:52,575 INFO L226 Difference]: Without dead ends: 135310 [2022-07-12 06:36:52,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:36:52,686 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 917 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:36:52,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 984 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:36:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135310 states. [2022-07-12 06:36:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135310 to 111939. [2022-07-12 06:36:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111939 states, 99024 states have (on average 1.4583636290192277) internal successors, (144413), 100053 states have internal predecessors, (144413), 7538 states have call successors, (7538), 4608 states have call predecessors, (7538), 5376 states have return successors, (20810), 7405 states have call predecessors, (20810), 7538 states have call successors, (20810) [2022-07-12 06:36:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111939 states to 111939 states and 172761 transitions. [2022-07-12 06:36:59,876 INFO L78 Accepts]: Start accepts. Automaton has 111939 states and 172761 transitions. Word has length 91 [2022-07-12 06:36:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:36:59,876 INFO L495 AbstractCegarLoop]: Abstraction has 111939 states and 172761 transitions. [2022-07-12 06:36:59,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-12 06:36:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 111939 states and 172761 transitions. [2022-07-12 06:36:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 06:36:59,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:36:59,891 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] [2022-07-12 06:36:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:36:59,891 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:36:59,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:36:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1975712409, now seen corresponding path program 1 times [2022-07-12 06:36:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:36:59,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199840785] [2022-07-12 06:36:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:36:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:36:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:36:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:36:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:36:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:36:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:36:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:36:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:36:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:36:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199840785] [2022-07-12 06:36:59,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199840785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:36:59,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:36:59,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:36:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839399484] [2022-07-12 06:36:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:36:59,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:36:59,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:36:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:36:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:36:59,953 INFO L87 Difference]: Start difference. First operand 111939 states and 172761 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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)