./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.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 e5d904d16bfadec9650eee3419425295e6c215eb7ede78bce460c631a5749a1f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:09:53,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:09:53,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:09:53,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:09:53,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:09:53,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:09:53,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:09:53,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:09:53,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:09:54,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:09:54,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:09:54,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:09:54,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:09:54,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:09:54,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:09:54,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:09:54,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:09:54,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:09:54,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:09:54,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:09:54,023 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:09:54,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:09:54,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:09:54,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:09:54,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:09:54,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:09:54,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:09:54,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:09:54,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:09:54,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:09:54,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:09:54,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:09:54,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:09:54,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:09:54,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:09:54,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:09:54,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:09:54,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:09:54,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:09:54,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:09:54,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:09:54,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:09:54,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:09:54,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:09:54,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:09:54,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:09:54,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:09:54,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:09:54,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:09:54,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:09:54,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:09:54,087 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:09:54,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:09:54,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:09:54,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:09:54,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:09:54,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:09:54,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:09:54,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:09:54,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:09:54,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:09:54,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:09:54,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:09:54,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:09:54,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:09:54,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:09:54,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:09:54,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:09:54,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:09:54,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:09:54,092 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:09:54,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:09:54,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:09:54,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d904d16bfadec9650eee3419425295e6c215eb7ede78bce460c631a5749a1f [2022-07-21 11:09:54,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:09:54,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:09:54,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:09:54,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:09:54,419 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:09:54,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2022-07-21 11:09:54,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c516ad05/fe3c2c374e54468c9a7f607d1ab78a56/FLAG301b765db [2022-07-21 11:09:55,373 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:09:55,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2022-07-21 11:09:55,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c516ad05/fe3c2c374e54468c9a7f607d1ab78a56/FLAG301b765db [2022-07-21 11:09:55,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c516ad05/fe3c2c374e54468c9a7f607d1ab78a56 [2022-07-21 11:09:55,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:09:55,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:09:55,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:09:55,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:09:55,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:09:55,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:09:55" (1/1) ... [2022-07-21 11:09:55,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a3485f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:55, skipping insertion in model container [2022-07-21 11:09:55,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:09:55" (1/1) ... [2022-07-21 11:09:55,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:09:55,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:09:56,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i[167966,167979] [2022-07-21 11:09:57,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:09:57,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:09:57,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i[167966,167979] [2022-07-21 11:09:57,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:09:57,823 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:09:57,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57 WrapperNode [2022-07-21 11:09:57,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:09:57,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:09:57,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:09:57,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:09:57,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:57,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,174 INFO L137 Inliner]: procedures = 229, calls = 2513, calls flagged for inlining = 116, calls inlined = 110, statements flattened = 6320 [2022-07-21 11:09:58,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:09:58,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:09:58,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:09:58,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:09:58,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:09:58,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:09:58,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:09:58,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:09:58,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (1/1) ... [2022-07-21 11:09:58,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:09:58,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:09:58,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:09:58,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:09:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-07-21 11:09:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-07-21 11:09:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:09:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:09:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:09:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:09:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-21 11:09:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-21 11:09:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_rx_fixup [2022-07-21 11:09:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_rx_fixup [2022-07-21 11:09:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_tx_fixup [2022-07-21 11:09:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_tx_fixup [2022-07-21 11:09:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_find_endpoints [2022-07-21 11:09:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_find_endpoints [2022-07-21 11:09:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_flags [2022-07-21 11:09:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_flags [2022-07-21 11:09:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:09:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:09:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-21 11:09:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-21 11:09:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-21 11:09:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_bind [2022-07-21 11:09:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_bind [2022-07-21 11:09:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_update_rxtx_max [2022-07-21 11:09:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_update_rxtx_max [2022-07-21 11:09:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:09:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:09:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-21 11:09:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-21 11:09:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-21 11:09:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-21 11:09:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:09:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:09:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:09:58,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:09:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2022-07-21 11:09:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2022-07-21 11:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_free [2022-07-21 11:09:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_free [2022-07-21 11:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_eth_hlen [2022-07-21 11:09:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_eth_hlen [2022-07-21 11:09:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 11:09:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 11:09:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:09:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_link_change [2022-07-21 11:09:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_link_change [2022-07-21 11:09:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_active [2022-07-21 11:09:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_active [2022-07-21 11:09:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-07-21 11:09:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-07-21 11:09:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-21 11:09:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:09:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:09:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 11:09:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 11:09:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 11:09:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 11:09:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 11:09:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 11:09:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 11:09:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 11:09:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-21 11:09:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-21 11:09:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_manage_power [2022-07-21 11:09:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_manage_power [2022-07-21 11:09:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:09:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:09:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:09:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-21 11:09:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-21 11:09:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:09:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_check_rx_max [2022-07-21 11:09:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_check_rx_max [2022-07-21 11:09:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:09:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-21 11:09:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-21 11:09:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-07-21 11:09:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-07-21 11:09:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:09:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:09:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-07-21 11:09:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_write_cmd [2022-07-21 11:09:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:09:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:09:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_lock_bh [2022-07-21 11:09:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_lock_bh [2022-07-21 11:09:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_unlock_bh [2022-07-21 11:09:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_unlock_bh [2022-07-21 11:09:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:09:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_status [2022-07-21 11:09:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_status [2022-07-21 11:09:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:09:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:09:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-07-21 11:09:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_read_cmd [2022-07-21 11:09:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:09:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-21 11:09:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-21 11:09:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:09:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:09:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:09:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_speed_change [2022-07-21 11:09:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_speed_change [2022-07-21 11:09:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_align_tail [2022-07-21 11:09:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_align_tail [2022-07-21 11:09:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-21 11:09:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-21 11:09:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_start_xmit [2022-07-21 11:09:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_start_xmit [2022-07-21 11:09:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_check_tx_max [2022-07-21 11:09:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_check_tx_max [2022-07-21 11:09:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 11:09:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 11:09:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:09:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:09:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-21 11:09:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-21 11:09:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2022-07-21 11:09:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2022-07-21 11:09:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_tx_timeout_start [2022-07-21 11:09:58,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_tx_timeout_start [2022-07-21 11:09:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:09:58,744 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:09:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_unbind [2022-07-21 11:09:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_unbind [2022-07-21 11:09:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:09:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:09:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:09:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-21 11:09:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-21 11:09:59,570 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:09:59,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:09:59,776 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:11:20,116 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:11:20,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:11:20,141 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 11:11:20,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:11:20 BoogieIcfgContainer [2022-07-21 11:11:20,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:11:20,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:11:20,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:11:20,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:11:20,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:09:55" (1/3) ... [2022-07-21 11:11:20,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8b729c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:11:20, skipping insertion in model container [2022-07-21 11:11:20,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:57" (2/3) ... [2022-07-21 11:11:20,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8b729c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:11:20, skipping insertion in model container [2022-07-21 11:11:20,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:11:20" (3/3) ... [2022-07-21 11:11:20,154 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2022-07-21 11:11:20,166 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:11:20,167 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:11:20,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:11:20,243 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f74f804, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2757bbd3 [2022-07-21 11:11:20,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:11:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 1469 states, 1115 states have (on average 1.4439461883408071) internal successors, (1610), 1145 states have internal predecessors, (1610), 297 states have call successors, (297), 56 states have call predecessors, (297), 55 states have return successors, (276), 275 states have call predecessors, (276), 276 states have call successors, (276) [2022-07-21 11:11:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-07-21 11:11:20,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:20,277 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:20,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash 788498172, now seen corresponding path program 1 times [2022-07-21 11:11:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:11:20,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054038417] [2022-07-21 11:11:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:11:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:11:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:11:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:11:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:11:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:11:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:11:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:11:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:11:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:11:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:11:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:11:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:11:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:11:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:11:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:11:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 11:11:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:11:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:11:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:11:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 11:11:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:11:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:11:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 11:11:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 11:11:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:11:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:11:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 11:11:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:11:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:11:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 11:11:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:11:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:11:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:11:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 11:11:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:11:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 11:11:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 11:11:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-21 11:11:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-21 11:11:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-21 11:11:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 11:11:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 11:11:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-21 11:11:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-21 11:11:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-21 11:11:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:11:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 11:11:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 11:11:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-21 11:11:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-21 11:11:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-21 11:11:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4348 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4348 trivial. 0 not checked. [2022-07-21 11:11:22,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:11:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054038417] [2022-07-21 11:11:22,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054038417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:22,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:22,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:11:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713047244] [2022-07-21 11:11:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:22,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:11:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:11:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:11:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:22,459 INFO L87 Difference]: Start difference. First operand has 1469 states, 1115 states have (on average 1.4439461883408071) internal successors, (1610), 1145 states have internal predecessors, (1610), 297 states have call successors, (297), 56 states have call predecessors, (297), 55 states have return successors, (276), 275 states have call predecessors, (276), 276 states have call successors, (276) Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2022-07-21 11:11:24,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:26,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:29,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:37,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:39,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:42,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:46,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:48,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:58,726 INFO L93 Difference]: Finished difference Result 4673 states and 7258 transitions. [2022-07-21 11:11:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:11:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 329 [2022-07-21 11:11:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:58,777 INFO L225 Difference]: With dead ends: 4673 [2022-07-21 11:11:58,777 INFO L226 Difference]: Without dead ends: 3159 [2022-07-21 11:11:58,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:11:58,800 INFO L413 NwaCegarLoop]: 2260 mSDtfsCounter, 3663 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 1373 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3855 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 3914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1373 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:58,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3855 Valid, 5937 Invalid, 3914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1373 Valid, 2533 Invalid, 8 Unknown, 0 Unchecked, 35.4s Time] [2022-07-21 11:11:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2022-07-21 11:11:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2744. [2022-07-21 11:11:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2153 states have (on average 1.4389224338132838) internal successors, (3098), 2168 states have internal predecessors, (3098), 481 states have call successors, (481), 109 states have call predecessors, (481), 109 states have return successors, (492), 478 states have call predecessors, (492), 480 states have call successors, (492) [2022-07-21 11:11:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4071 transitions. [2022-07-21 11:11:59,083 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4071 transitions. Word has length 329 [2022-07-21 11:11:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:59,088 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4071 transitions. [2022-07-21 11:11:59,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2022-07-21 11:11:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4071 transitions. [2022-07-21 11:11:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-21 11:11:59,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:59,100 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:59,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:11:59,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:59,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:59,101 INFO L85 PathProgramCache]: Analyzing trace with hash -638375671, now seen corresponding path program 1 times [2022-07-21 11:11:59,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:11:59,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832255404] [2022-07-21 11:11:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:59,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:11:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:12:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:12:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:12:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:12:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:12:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:12:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:12:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:12:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:12:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:12:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:12:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:12:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:12:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:12:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:12:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 11:12:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:12:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:12:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:12:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 11:12:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:12:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:12:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 11:12:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 11:12:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:12:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:12:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 11:12:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:12:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:12:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 11:12:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:12:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:12:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:12:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 11:12:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:12:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 11:12:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 11:12:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-21 11:12:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-21 11:12:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-21 11:12:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 11:12:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 11:12:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-21 11:12:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-21 11:12:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-21 11:12:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:12:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 11:12:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 11:12:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-21 11:12:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-21 11:12:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-21 11:12:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-07-21 11:12:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4536 trivial. 0 not checked. [2022-07-21 11:12:00,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:12:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832255404] [2022-07-21 11:12:00,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832255404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:12:00,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:12:00,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:12:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449664783] [2022-07-21 11:12:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:12:00,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:12:00,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:12:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:12:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:12:00,783 INFO L87 Difference]: Start difference. First operand 2744 states and 4071 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-07-21 11:12:02,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:05,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:18,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:20,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:22,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:25,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:31,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:33,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:36,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:38,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:40,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:46,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:54,190 INFO L93 Difference]: Finished difference Result 8907 states and 13516 transitions. [2022-07-21 11:12:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:12:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 338 [2022-07-21 11:12:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:54,240 INFO L225 Difference]: With dead ends: 8907 [2022-07-21 11:12:54,240 INFO L226 Difference]: Without dead ends: 6263 [2022-07-21 11:12:54,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:12:54,258 INFO L413 NwaCegarLoop]: 2291 mSDtfsCounter, 3827 mSDsluCounter, 6910 mSDsCounter, 0 mSdLazyCounter, 4329 mSolverCounterSat, 1312 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4070 SdHoareTripleChecker+Valid, 9201 SdHoareTripleChecker+Invalid, 5653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1312 IncrementalHoareTripleChecker+Valid, 4329 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:54,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4070 Valid, 9201 Invalid, 5653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1312 Valid, 4329 Invalid, 12 Unknown, 0 Unchecked, 52.5s Time] [2022-07-21 11:12:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2022-07-21 11:12:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 5425. [2022-07-21 11:12:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 4288 states have (on average 1.443563432835821) internal successors, (6190), 4326 states have internal predecessors, (6190), 910 states have call successors, (910), 217 states have call predecessors, (910), 226 states have return successors, (989), 907 states have call predecessors, (989), 909 states have call successors, (989) [2022-07-21 11:12:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 8089 transitions. [2022-07-21 11:12:54,509 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 8089 transitions. Word has length 338 [2022-07-21 11:12:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:54,511 INFO L495 AbstractCegarLoop]: Abstraction has 5425 states and 8089 transitions. [2022-07-21 11:12:54,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-07-21 11:12:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 8089 transitions. [2022-07-21 11:12:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-07-21 11:12:54,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:54,529 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:12:54,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:12:54,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash -831895431, now seen corresponding path program 1 times [2022-07-21 11:12:54,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:12:54,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011308248] [2022-07-21 11:12:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:12:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:12:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:12:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:12:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:12:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:12:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:12:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:12:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:12:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:12:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:12:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:12:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:12:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:12:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:12:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:12:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 11:12:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:12:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:12:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:12:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 11:12:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:12:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:12:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 11:12:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 11:12:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:12:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:12:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 11:12:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:12:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:12:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 11:12:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:12:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:12:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:12:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 11:12:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:12:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 11:12:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 11:12:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-21 11:12:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-21 11:12:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-21 11:12:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 11:12:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 11:12:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-21 11:12:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-21 11:12:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-21 11:12:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:12:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 11:12:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 11:12:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-21 11:12:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-21 11:12:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-21 11:12:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-21 11:12:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:12:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:12:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:12:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 11:12:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-07-21 11:12:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4736 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4728 trivial. 0 not checked. [2022-07-21 11:12:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:12:56,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011308248] [2022-07-21 11:12:56,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011308248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:12:56,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:12:56,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:12:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801271158] [2022-07-21 11:12:56,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:12:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:12:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:12:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:12:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:12:56,082 INFO L87 Difference]: Start difference. First operand 5425 states and 8089 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-07-21 11:12:58,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:05,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:07,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:09,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:12,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:16,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:24,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:26,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:28,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:31,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:13:34,546 INFO L93 Difference]: Finished difference Result 17353 states and 26122 transitions. [2022-07-21 11:13:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:13:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 406 [2022-07-21 11:13:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:13:34,624 INFO L225 Difference]: With dead ends: 17353 [2022-07-21 11:13:34,625 INFO L226 Difference]: Without dead ends: 12034 [2022-07-21 11:13:34,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:13:34,666 INFO L413 NwaCegarLoop]: 2240 mSDtfsCounter, 3703 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 1269 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3957 SdHoareTripleChecker+Valid, 5670 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1269 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:13:34,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3957 Valid, 5670 Invalid, 3810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1269 Valid, 2531 Invalid, 10 Unknown, 0 Unchecked, 37.9s Time] [2022-07-21 11:13:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12034 states. [2022-07-21 11:13:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12034 to 10493. [2022-07-21 11:13:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10493 states, 8346 states have (on average 1.4471603163191948) internal successors, (12078), 8424 states have internal predecessors, (12078), 1694 states have call successors, (1694), 433 states have call predecessors, (1694), 452 states have return successors, (1820), 1687 states have call predecessors, (1820), 1693 states have call successors, (1820) [2022-07-21 11:13:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10493 states to 10493 states and 15592 transitions. [2022-07-21 11:13:35,219 INFO L78 Accepts]: Start accepts. Automaton has 10493 states and 15592 transitions. Word has length 406 [2022-07-21 11:13:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:13:35,220 INFO L495 AbstractCegarLoop]: Abstraction has 10493 states and 15592 transitions. [2022-07-21 11:13:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-07-21 11:13:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 10493 states and 15592 transitions. [2022-07-21 11:13:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-07-21 11:13:35,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:13:35,234 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:13:35,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:13:35,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:13:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:13:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1879358324, now seen corresponding path program 1 times [2022-07-21 11:13:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:13:35,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034492891] [2022-07-21 11:13:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:13:35,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:13:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:13:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:13:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:13:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:13:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:13:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:13:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:13:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:13:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:13:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:13:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:13:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:13:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:13:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:13:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:13:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 11:13:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:13:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:13:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:13:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 11:13:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:13:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:13:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 11:13:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 11:13:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:13:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:13:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 11:13:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:13:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:13:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 11:13:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:13:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:13:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:13:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 11:13:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:13:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 11:13:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 11:13:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-21 11:13:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-21 11:13:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-21 11:13:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 11:13:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 11:13:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-21 11:13:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-21 11:13:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-21 11:13:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:13:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 11:13:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 11:13:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-21 11:13:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-21 11:13:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-21 11:13:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-21 11:13:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:13:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:13:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:13:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 11:13:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-07-21 11:13:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:13:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4736 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4728 trivial. 0 not checked. [2022-07-21 11:13:36,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:13:36,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034492891] [2022-07-21 11:13:36,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034492891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:13:36,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:13:36,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:13:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513930703] [2022-07-21 11:13:36,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:13:36,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:13:36,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:13:36,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:13:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:13:36,576 INFO L87 Difference]: Start difference. First operand 10493 states and 15592 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-07-21 11:13:38,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:40,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:48,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:51,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:54,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:56,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:13:58,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:14:00,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:14:05,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:14:07,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []