./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 09:16:59,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 09:16:59,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 09:16:59,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 09:16:59,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 09:16:59,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 09:16:59,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 09:16:59,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 09:16:59,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 09:16:59,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 09:16:59,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 09:16:59,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 09:16:59,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 09:16:59,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 09:16:59,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 09:16:59,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 09:16:59,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 09:16:59,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 09:16:59,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 09:16:59,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 09:16:59,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 09:16:59,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 09:16:59,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 09:16:59,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 09:16:59,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 09:16:59,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 09:16:59,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 09:16:59,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 09:16:59,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 09:16:59,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 09:16:59,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 09:16:59,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 09:16:59,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 09:16:59,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 09:16:59,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 09:16:59,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 09:16:59,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 09:16:59,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 09:16:59,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 09:16:59,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 09:16:59,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 09:16:59,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 09:16:59,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 09:16:59,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 09:16:59,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 09:16:59,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 09:16:59,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 09:16:59,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 09:16:59,995 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 09:16:59,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 09:16:59,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 09:16:59,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 09:16:59,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 09:16:59,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 09:16:59,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 09:16:59,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 09:16:59,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 09:16:59,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 09:16:59,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 09:16:59,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 09:16:59,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 09:16:59,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:16:59,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 09:16:59,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 09:16:59,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 09:16:59,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 09:16:59,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 09:16:59,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 09:16:59,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 09:16:59,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 09:16:59,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 09:16:59,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 [2021-11-04 09:17:00,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 09:17:00,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 09:17:00,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 09:17:00,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 09:17:00,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 09:17:00,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-04 09:17:00,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e58348c2/ff0aa04e3cfc4bfc906be15168fad1e2/FLAGf908fb009 [2021-11-04 09:17:00,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 09:17:00,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-04 09:17:00,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e58348c2/ff0aa04e3cfc4bfc906be15168fad1e2/FLAGf908fb009 [2021-11-04 09:17:01,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e58348c2/ff0aa04e3cfc4bfc906be15168fad1e2 [2021-11-04 09:17:01,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 09:17:01,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 09:17:01,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 09:17:01,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 09:17:01,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 09:17:01,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:17:01" (1/1) ... [2021-11-04 09:17:01,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef85420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:01, skipping insertion in model container [2021-11-04 09:17:01,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:17:01" (1/1) ... [2021-11-04 09:17:01,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 09:17:01,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 09:17:03,037 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2021-11-04 09:17:03,040 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2021-11-04 09:17:03,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:17:03,092 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 09:17:03,349 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2021-11-04 09:17:03,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2021-11-04 09:17:03,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:17:03,460 INFO L208 MainTranslator]: Completed translation [2021-11-04 09:17:03,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03 WrapperNode [2021-11-04 09:17:03,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 09:17:03,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 09:17:03,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 09:17:03,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 09:17:03,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:03,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:03,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 09:17:03,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 09:17:03,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 09:17:03,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 09:17:03,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:03,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:03,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:03,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:04,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:04,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:04,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:04,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 09:17:04,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 09:17:04,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 09:17:04,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 09:17:04,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (1/1) ... [2021-11-04 09:17:04,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:17:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:17:04,358 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) [2021-11-04 09:17:04,379 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 [2021-11-04 09:17:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 09:17:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 09:17:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 09:17:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-04 09:17:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 09:17:14,295 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 09:17:14,296 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 09:17:14,296 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 09:17:14,297 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 09:17:14,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 09:17:14,315 INFO L299 CfgBuilder]: Removed 2703 assume(true) statements. [2021-11-04 09:17:14,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:17:14 BoogieIcfgContainer [2021-11-04 09:17:14,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 09:17:14,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 09:17:14,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 09:17:14,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 09:17:14,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 09:17:01" (1/3) ... [2021-11-04 09:17:14,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47433c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:17:14, skipping insertion in model container [2021-11-04 09:17:14,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:17:03" (2/3) ... [2021-11-04 09:17:14,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47433c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:17:14, skipping insertion in model container [2021-11-04 09:17:14,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:17:14" (3/3) ... [2021-11-04 09:17:14,327 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-04 09:17:14,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 09:17:14,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-11-04 09:17:14,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 09:17:14,383 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 09:17:14,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-11-04 09:17:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 3189 states, 3130 states have (on average 1.4987220447284344) internal successors, (4691), 3188 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:17:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-04 09:17:14,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:17:14,448 INFO L514 BasicCegarLoop]: 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] [2021-11-04 09:17:14,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:17:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:17:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1107920357, now seen corresponding path program 1 times [2021-11-04 09:17:14,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:17:14,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507849086] [2021-11-04 09:17:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:17:14,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:17:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:17:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:17:15,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:17:15,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507849086] [2021-11-04 09:17:15,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507849086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:17:15,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:17:15,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:17:15,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25443345] [2021-11-04 09:17:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:17:15,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:17:15,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:17:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:17:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:17:15,137 INFO L87 Difference]: Start difference. First operand has 3189 states, 3130 states have (on average 1.4987220447284344) internal successors, (4691), 3188 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:17:17,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:17:32,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:17:51,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:17:53,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:18:19,499 INFO L93 Difference]: Finished difference Result 6757 states and 9925 transitions. [2021-11-04 09:18:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:18:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-04 09:18:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:18:19,531 INFO L225 Difference]: With dead ends: 6757 [2021-11-04 09:18:19,531 INFO L226 Difference]: Without dead ends: 3370 [2021-11-04 09:18:19,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:18:19,543 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 666 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 8748 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60337.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 8767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 113.62ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8748 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63439.27ms IncrementalHoareTripleChecker+Time [2021-11-04 09:18:19,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 300 Invalid, 8767 Unknown, 0 Unchecked, 113.62ms Time], IncrementalHoareTripleChecker [16 Valid, 8748 Invalid, 3 Unknown, 0 Unchecked, 63439.27ms Time] [2021-11-04 09:18:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-04 09:18:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3354. [2021-11-04 09:18:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3295 states have (on average 1.4370257966616085) internal successors, (4735), 3353 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:18:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4735 transitions. [2021-11-04 09:18:19,681 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4735 transitions. Word has length 60 [2021-11-04 09:18:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:18:19,682 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4735 transitions. [2021-11-04 09:18:19,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:18:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4735 transitions. [2021-11-04 09:18:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 09:18:19,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:18:19,687 INFO L514 BasicCegarLoop]: 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] [2021-11-04 09:18:19,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 09:18:19,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:18:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:18:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -580581691, now seen corresponding path program 1 times [2021-11-04 09:18:19,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:18:19,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158442100] [2021-11-04 09:18:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:18:19,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:18:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:18:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:18:20,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:18:20,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158442100] [2021-11-04 09:18:20,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158442100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:18:20,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:18:20,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:18:20,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931228744] [2021-11-04 09:18:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:18:20,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:18:20,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:18:20,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:18:20,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:18:20,038 INFO L87 Difference]: Start difference. First operand 3354 states and 4735 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:18:22,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:29,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:38,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:40,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:13,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:19:27,309 INFO L93 Difference]: Finished difference Result 9290 states and 13162 transitions. [2021-11-04 09:19:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:19:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-04 09:19:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:19:27,327 INFO L225 Difference]: With dead ends: 9290 [2021-11-04 09:19:27,328 INFO L226 Difference]: Without dead ends: 6004 [2021-11-04 09:19:27,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:27,338 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3647 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 8338 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63148.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3647 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.46ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 8338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66484.71ms IncrementalHoareTripleChecker+Time [2021-11-04 09:19:27,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3647 Valid, 0 Invalid, 8348 Unknown, 0 Unchecked, 63.46ms Time], IncrementalHoareTripleChecker [9 Valid, 8338 Invalid, 1 Unknown, 0 Unchecked, 66484.71ms Time] [2021-11-04 09:19:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2021-11-04 09:19:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 5844. [2021-11-04 09:19:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5785 states have (on average 1.4487467588591183) internal successors, (8381), 5843 states have internal predecessors, (8381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 8381 transitions. [2021-11-04 09:19:27,447 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 8381 transitions. Word has length 70 [2021-11-04 09:19:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:19:27,448 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 8381 transitions. [2021-11-04 09:19:27,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 8381 transitions. [2021-11-04 09:19:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 09:19:27,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:19:27,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:19:27,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 09:19:27,450 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:19:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:19:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1725639997, now seen corresponding path program 1 times [2021-11-04 09:19:27,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:19:27,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265809431] [2021-11-04 09:19:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:19:27,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:19:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:19:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:19:27,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:19:27,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265809431] [2021-11-04 09:19:27,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265809431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:19:27,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:19:27,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:19:27,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92750187] [2021-11-04 09:19:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:19:27,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:19:27,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:19:27,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:19:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:27,737 INFO L87 Difference]: Start difference. First operand 5844 states and 8381 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:29,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:04,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:11,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:20:55,864 INFO L93 Difference]: Finished difference Result 17376 states and 24971 transitions. [2021-11-04 09:20:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:20:55,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-04 09:20:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:20:55,900 INFO L225 Difference]: With dead ends: 17376 [2021-11-04 09:20:55,901 INFO L226 Difference]: Without dead ends: 11600 [2021-11-04 09:20:55,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:20:55,918 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4082 mSDsluCounter, 4167 mSDsCounter, 0 mSdLazyCounter, 12336 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83394.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87215.75ms IncrementalHoareTripleChecker+Time [2021-11-04 09:20:55,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4082 Valid, 0 Invalid, 12340 Unknown, 0 Unchecked, 72.54ms Time], IncrementalHoareTripleChecker [3 Valid, 12336 Invalid, 1 Unknown, 0 Unchecked, 87215.75ms Time] [2021-11-04 09:20:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2021-11-04 09:20:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 11466. [2021-11-04 09:20:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11407 states have (on average 1.4537564653283073) internal successors, (16583), 11465 states have internal predecessors, (16583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 16583 transitions. [2021-11-04 09:20:56,153 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 16583 transitions. Word has length 75 [2021-11-04 09:20:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:20:56,154 INFO L470 AbstractCegarLoop]: Abstraction has 11466 states and 16583 transitions. [2021-11-04 09:20:56,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 16583 transitions. [2021-11-04 09:20:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-04 09:20:56,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:20:56,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:20:56,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 09:20:56,158 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:20:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:20:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1416380071, now seen corresponding path program 1 times [2021-11-04 09:20:56,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:20:56,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440149783] [2021-11-04 09:20:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:20:56,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:20:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:20:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 09:20:56,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:20:56,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440149783] [2021-11-04 09:20:56,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440149783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:20:56,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:20:56,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:20:56,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342521801] [2021-11-04 09:20:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:20:56,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:20:56,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:20:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:20:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:20:56,521 INFO L87 Difference]: Start difference. First operand 11466 states and 16583 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:58,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:21:11,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:21:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:21:44,969 INFO L93 Difference]: Finished difference Result 23910 states and 34525 transitions. [2021-11-04 09:21:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:21:44,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-04 09:21:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:21:45,007 INFO L225 Difference]: With dead ends: 23910 [2021-11-04 09:21:45,007 INFO L226 Difference]: Without dead ends: 12512 [2021-11-04 09:21:45,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:21:45,025 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2743 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 6737 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45488.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.50ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6737 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47736.60ms IncrementalHoareTripleChecker+Time [2021-11-04 09:21:45,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2743 Valid, 0 Invalid, 6749 Unknown, 0 Unchecked, 41.50ms Time], IncrementalHoareTripleChecker [10 Valid, 6737 Invalid, 2 Unknown, 0 Unchecked, 47736.60ms Time] [2021-11-04 09:21:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12512 states. [2021-11-04 09:21:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12512 to 12438. [2021-11-04 09:21:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.4464011632603604) internal successors, (17905), 12437 states have internal predecessors, (17905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:21:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17905 transitions. [2021-11-04 09:21:45,251 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17905 transitions. Word has length 108 [2021-11-04 09:21:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:21:45,253 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17905 transitions. [2021-11-04 09:21:45,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:21:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17905 transitions. [2021-11-04 09:21:45,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-04 09:21:45,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:21:45,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:21:45,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 09:21:45,255 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:21:45,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:21:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2048557782, now seen corresponding path program 1 times [2021-11-04 09:21:45,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:21:45,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177211137] [2021-11-04 09:21:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:21:45,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:21:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:21:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:21:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:21:45,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177211137] [2021-11-04 09:21:45,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177211137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:21:45,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:21:45,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 09:21:45,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863105730] [2021-11-04 09:21:45,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:21:45,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:21:45,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:21:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:21:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:21:45,660 INFO L87 Difference]: Start difference. First operand 12438 states and 17905 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:21:47,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:21:56,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:22:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:22:48,728 INFO L93 Difference]: Finished difference Result 36724 states and 52876 transitions. [2021-11-04 09:22:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:22:48,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-04 09:22:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:22:48,777 INFO L225 Difference]: With dead ends: 36724 [2021-11-04 09:22:48,778 INFO L226 Difference]: Without dead ends: 24354 [2021-11-04 09:22:48,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:22:48,796 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3804 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 8281 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58891.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3804 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.07ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 8281 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62080.81ms IncrementalHoareTripleChecker+Time [2021-11-04 09:22:48,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3804 Valid, 0 Invalid, 8338 Unknown, 0 Unchecked, 56.07ms Time], IncrementalHoareTripleChecker [55 Valid, 8281 Invalid, 2 Unknown, 0 Unchecked, 62080.81ms Time] [2021-11-04 09:22:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24354 states. [2021-11-04 09:22:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24354 to 24242. [2021-11-04 09:22:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24242 states, 24183 states have (on average 1.4372493073646777) internal successors, (34757), 24241 states have internal predecessors, (34757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:22:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24242 states to 24242 states and 34757 transitions. [2021-11-04 09:22:49,195 INFO L78 Accepts]: Start accepts. Automaton has 24242 states and 34757 transitions. Word has length 157 [2021-11-04 09:22:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:22:49,195 INFO L470 AbstractCegarLoop]: Abstraction has 24242 states and 34757 transitions. [2021-11-04 09:22:49,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:22:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 24242 states and 34757 transitions. [2021-11-04 09:22:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-04 09:22:49,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:22:49,198 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:22:49,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 09:22:49,198 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:22:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:22:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash -918977778, now seen corresponding path program 1 times [2021-11-04 09:22:49,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:22:49,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305991201] [2021-11-04 09:22:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:22:49,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:22:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:22:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:22:49,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:22:49,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305991201] [2021-11-04 09:22:49,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305991201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:22:49,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:22:49,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:22:49,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726050328] [2021-11-04 09:22:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:22:49,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:22:49,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:22:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:22:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:22:49,704 INFO L87 Difference]: Start difference. First operand 24242 states and 34757 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:22:51,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:05,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:07,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:14,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:42,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:24:05,647 INFO L93 Difference]: Finished difference Result 66770 states and 92761 transitions. [2021-11-04 09:24:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:24:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-04 09:24:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:24:05,722 INFO L225 Difference]: With dead ends: 66770 [2021-11-04 09:24:05,723 INFO L226 Difference]: Without dead ends: 42596 [2021-11-04 09:24:05,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:24:05,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8104 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 9440 mSolverCounterSat, 174 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70839.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 137.94ms SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 9440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74507.66ms IncrementalHoareTripleChecker+Time [2021-11-04 09:24:05,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8104 Valid, 0 Invalid, 9617 Unknown, 0 Unchecked, 137.94ms Time], IncrementalHoareTripleChecker [174 Valid, 9440 Invalid, 3 Unknown, 0 Unchecked, 74507.66ms Time] [2021-11-04 09:24:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42596 states. [2021-11-04 09:24:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42596 to 21912. [2021-11-04 09:24:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21912 states, 21853 states have (on average 1.3581201665675193) internal successors, (29679), 21911 states have internal predecessors, (29679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:24:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21912 states to 21912 states and 29679 transitions. [2021-11-04 09:24:06,459 INFO L78 Accepts]: Start accepts. Automaton has 21912 states and 29679 transitions. Word has length 158 [2021-11-04 09:24:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:24:06,460 INFO L470 AbstractCegarLoop]: Abstraction has 21912 states and 29679 transitions. [2021-11-04 09:24:06,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:24:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 21912 states and 29679 transitions. [2021-11-04 09:24:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-04 09:24:06,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:24:06,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:24:06,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 09:24:06,466 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:24:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:24:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1576849329, now seen corresponding path program 1 times [2021-11-04 09:24:06,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:24:06,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070770510] [2021-11-04 09:24:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:24:06,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:24:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:24:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:24:06,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:24:06,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070770510] [2021-11-04 09:24:06,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070770510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:24:06,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:24:06,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:24:06,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528176321] [2021-11-04 09:24:06,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:24:06,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:24:06,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:24:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:24:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:24:06,838 INFO L87 Difference]: Start difference. First operand 21912 states and 29679 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:24:08,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:25,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:30,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:25:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:25:27,552 INFO L93 Difference]: Finished difference Result 61690 states and 81963 transitions. [2021-11-04 09:25:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:25:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-04 09:25:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:25:27,615 INFO L225 Difference]: With dead ends: 61690 [2021-11-04 09:25:27,615 INFO L226 Difference]: Without dead ends: 39846 [2021-11-04 09:25:27,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:25:27,662 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8008 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 9405 mSolverCounterSat, 175 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74194.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8008 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.85ms SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 9405 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79084.67ms IncrementalHoareTripleChecker+Time [2021-11-04 09:25:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8008 Valid, 0 Invalid, 9582 Unknown, 0 Unchecked, 107.85ms Time], IncrementalHoareTripleChecker [175 Valid, 9405 Invalid, 2 Unknown, 0 Unchecked, 79084.67ms Time] [2021-11-04 09:25:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39846 states. [2021-11-04 09:25:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39846 to 30512. [2021-11-04 09:25:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30512 states, 30453 states have (on average 1.323120874790661) internal successors, (40293), 30511 states have internal predecessors, (40293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:25:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30512 states to 30512 states and 40293 transitions. [2021-11-04 09:25:28,481 INFO L78 Accepts]: Start accepts. Automaton has 30512 states and 40293 transitions. Word has length 159 [2021-11-04 09:25:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:25:28,481 INFO L470 AbstractCegarLoop]: Abstraction has 30512 states and 40293 transitions. [2021-11-04 09:25:28,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:25:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 30512 states and 40293 transitions. [2021-11-04 09:25:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-04 09:25:28,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:25:28,484 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:25:28,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 09:25:28,484 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:25:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:25:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1638227273, now seen corresponding path program 1 times [2021-11-04 09:25:28,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:25:28,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684827104] [2021-11-04 09:25:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:25:28,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:25:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:25:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:25:28,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:25:28,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684827104] [2021-11-04 09:25:28,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684827104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:25:28,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:25:28,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:25:28,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634295868] [2021-11-04 09:25:28,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:25:28,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:25:28,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:25:28,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:25:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:25:28,858 INFO L87 Difference]: Start difference. First operand 30512 states and 40293 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:25:30,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:25:47,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:25:53,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:25:55,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:26:49,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:26:55,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:27:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:27:32,713 INFO L93 Difference]: Finished difference Result 86150 states and 113749 transitions. [2021-11-04 09:27:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:27:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-04 09:27:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:27:32,825 INFO L225 Difference]: With dead ends: 86150 [2021-11-04 09:27:32,825 INFO L226 Difference]: Without dead ends: 73780 [2021-11-04 09:27:32,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:27:32,854 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9989 mSDsluCounter, 6706 mSDsCounter, 0 mSdLazyCounter, 14150 mSolverCounterSat, 209 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113361.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9989 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 138.16ms SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 14150 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121118.87ms IncrementalHoareTripleChecker+Time [2021-11-04 09:27:32,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9989 Valid, 0 Invalid, 14362 Unknown, 0 Unchecked, 138.16ms Time], IncrementalHoareTripleChecker [209 Valid, 14150 Invalid, 3 Unknown, 0 Unchecked, 121118.87ms Time] [2021-11-04 09:27:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73780 states. [2021-11-04 09:27:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73780 to 72010. [2021-11-04 09:27:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72010 states, 71951 states have (on average 1.3114063737821573) internal successors, (94357), 72009 states have internal predecessors, (94357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:27:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72010 states to 72010 states and 94357 transitions. [2021-11-04 09:27:35,165 INFO L78 Accepts]: Start accepts. Automaton has 72010 states and 94357 transitions. Word has length 160 [2021-11-04 09:27:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:27:35,168 INFO L470 AbstractCegarLoop]: Abstraction has 72010 states and 94357 transitions. [2021-11-04 09:27:35,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:27:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 72010 states and 94357 transitions. [2021-11-04 09:27:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-04 09:27:35,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:27:35,193 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:27:35,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 09:27:35,193 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:27:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:27:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -753874804, now seen corresponding path program 1 times [2021-11-04 09:27:35,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:27:35,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779057312] [2021-11-04 09:27:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:27:35,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:27:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:27:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:27:35,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:27:35,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779057312] [2021-11-04 09:27:35,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779057312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:27:35,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:27:35,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:27:35,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864584958] [2021-11-04 09:27:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:27:35,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:27:35,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:27:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:27:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:27:35,678 INFO L87 Difference]: Start difference. First operand 72010 states and 94357 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:27:37,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:27:52,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:27:55,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:27:58,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:28:06,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:29:12,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:30:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:30:02,004 INFO L93 Difference]: Finished difference Result 145802 states and 192219 transitions. [2021-11-04 09:30:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:30:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-04 09:30:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:30:02,205 INFO L225 Difference]: With dead ends: 145802 [2021-11-04 09:30:02,205 INFO L226 Difference]: Without dead ends: 114384 [2021-11-04 09:30:02,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:30:02,255 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10905 mSDsluCounter, 9697 mSDsCounter, 0 mSdLazyCounter, 16669 mSolverCounterSat, 226 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132664.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10905 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 167.18ms SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 16669 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142051.51ms IncrementalHoareTripleChecker+Time [2021-11-04 09:30:02,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10905 Valid, 0 Invalid, 16897 Unknown, 0 Unchecked, 167.18ms Time], IncrementalHoareTripleChecker [226 Valid, 16669 Invalid, 2 Unknown, 0 Unchecked, 142051.51ms Time] [2021-11-04 09:30:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114384 states. [2021-11-04 09:30:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114384 to 91702. [2021-11-04 09:30:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91702 states, 91643 states have (on average 1.298156978710867) internal successors, (118967), 91701 states have internal predecessors, (118967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:30:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91702 states to 91702 states and 118967 transitions. [2021-11-04 09:30:05,146 INFO L78 Accepts]: Start accepts. Automaton has 91702 states and 118967 transitions. Word has length 161 [2021-11-04 09:30:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:30:05,151 INFO L470 AbstractCegarLoop]: Abstraction has 91702 states and 118967 transitions. [2021-11-04 09:30:05,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:30:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 91702 states and 118967 transitions. [2021-11-04 09:30:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-04 09:30:05,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:30:05,176 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:30:05,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 09:30:05,176 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-04 09:30:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:30:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1894446204, now seen corresponding path program 1 times [2021-11-04 09:30:05,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:30:05,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702362766] [2021-11-04 09:30:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:30:05,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:30:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:30:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:30:05,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:30:05,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702362766] [2021-11-04 09:30:05,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702362766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:30:05,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:30:05,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:30:05,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371175554] [2021-11-04 09:30:05,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:30:05,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:30:05,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:30:05,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:30:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:30:05,604 INFO L87 Difference]: Start difference. First operand 91702 states and 118967 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:30:07,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:30:12,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:30:18,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:30:19,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:30:30,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:30:37,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15